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#ifndef CUDA_HELPER_H |
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#define CUDA_HELPER_H |
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#include <cuda.h> |
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#include <cuda_runtime.h> |
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#ifdef __INTELLISENSE__ |
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/* reduce vstudio warnings (__byteperm, blockIdx...) */ |
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#include <device_functions.h> |
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#include <device_launch_parameters.h> |
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#define __launch_bounds__(max_tpb, min_blocks) |
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#endif |
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#include <stdint.h> |
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#ifndef MAX_GPUS |
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#define MAX_GPUS 16 |
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#endif |
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extern "C" short device_map[MAX_GPUS]; |
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extern "C" long device_sm[MAX_GPUS]; |
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// common functions |
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extern void cuda_check_cpu_init(int thr_id, int threads); |
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extern void cuda_check_cpu_setTarget(const void *ptarget); |
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extern uint32_t cuda_check_hash(int thr_id, int threads, uint32_t startNounce, uint32_t *d_inputHash); |
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extern uint32_t cuda_check_hash_suppl(int thr_id, int threads, uint32_t startNounce, uint32_t *d_inputHash, uint8_t numNonce); |
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extern cudaError_t MyStreamSynchronize(cudaStream_t stream, int situation, int thr_id); |
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extern void cudaReportHardwareFailure(int thr_id, cudaError_t error, const char* func); |
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extern __device__ __device_builtin__ void __syncthreads(void); |
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extern __device__ __device_builtin__ void __threadfence(void); |
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#ifndef __CUDA_ARCH__ |
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// define blockDim and threadIdx for host |
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extern const dim3 blockDim; |
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extern const uint3 threadIdx; |
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#endif |
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#ifndef SPH_C32 |
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#define SPH_C32(x) (x) |
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// #define SPH_C32(x) ((uint32_t)(x ## U)) |
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#endif |
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#ifndef SPH_C64 |
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#define SPH_C64(x) (x) |
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// #define SPH_C64(x) ((uint64_t)(x ## ULL)) |
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#endif |
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#ifndef SPH_T32 |
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#define SPH_T32(x) (x) |
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// #define SPH_T32(x) ((x) & SPH_C32(0xFFFFFFFF)) |
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#endif |
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#ifndef SPH_T64 |
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#define SPH_T64(x) (x) |
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// #define SPH_T64(x) ((x) & SPH_C64(0xFFFFFFFFFFFFFFFF)) |
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#endif |
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#if __CUDA_ARCH__ < 320 |
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// Kepler (Compute 3.0) |
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#define ROTL32(x, n) SPH_T32(((x) << (n)) | ((x) >> (32 - (n)))) |
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#else |
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// Kepler (Compute 3.5, 5.0) |
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#define ROTL32(x, n) __funnelshift_l( (x), (x), (n) ) |
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#endif |
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__device__ __forceinline__ uint64_t MAKE_ULONGLONG(uint32_t LO, uint32_t HI) |
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{ |
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#if __CUDA_ARCH__ >= 130 |
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return __double_as_longlong(__hiloint2double(HI, LO)); |
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#else |
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return (uint64_t)LO | (((uint64_t)HI) << 32); |
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#endif |
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} |
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// das Hi Word in einem 64 Bit Typen ersetzen |
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__device__ __forceinline__ uint64_t REPLACE_HIWORD(const uint64_t &x, const uint32_t &y) { |
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return (x & 0xFFFFFFFFULL) | (((uint64_t)y) << 32U); |
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} |
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// das Lo Word in einem 64 Bit Typen ersetzen |
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__device__ __forceinline__ uint64_t REPLACE_LOWORD(const uint64_t &x, const uint32_t &y) { |
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return (x & 0xFFFFFFFF00000000ULL) | ((uint64_t)y); |
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} |
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// Endian Drehung f<EFBFBD>r 32 Bit Typen |
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#ifdef __CUDA_ARCH__ |
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__device__ __forceinline__ uint32_t cuda_swab32(uint32_t x) |
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{ |
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/* device */ |
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return __byte_perm(x, x, 0x0123); |
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} |
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#else |
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/* host */ |
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#define cuda_swab32(x) \ |
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((((x) << 24) & 0xff000000u) | (((x) << 8) & 0x00ff0000u) | \ |
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(((x) >> 8) & 0x0000ff00u) | (((x) >> 24) & 0x000000ffu)) |
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#endif |
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// das Lo Word aus einem 64 Bit Typen extrahieren |
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__device__ __forceinline__ uint32_t _LOWORD(const uint64_t &x) { |
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#if __CUDA_ARCH__ >= 130 |
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return (uint32_t)__double2loint(__longlong_as_double(x)); |
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#else |
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return (uint32_t)(x & 0xFFFFFFFFULL); |
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#endif |
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} |
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// das Hi Word aus einem 64 Bit Typen extrahieren |
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__device__ __forceinline__ uint32_t _HIWORD(const uint64_t &x) { |
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#if __CUDA_ARCH__ >= 130 |
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return (uint32_t)__double2hiint(__longlong_as_double(x)); |
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#else |
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return (uint32_t)(x >> 32); |
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#endif |
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} |
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#ifdef __CUDA_ARCH__ |
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__device__ __forceinline__ uint64_t cuda_swab64(uint64_t x) |
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{ |
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// Input: 77665544 33221100 |
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// Output: 00112233 44556677 |
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uint64_t result = __byte_perm((uint32_t) x, 0, 0x0123); |
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return (result << 32) | __byte_perm(_HIWORD(x), 0, 0x0123); |
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} |
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#else |
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/* host */ |
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#define cuda_swab64(x) \ |
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((uint64_t)((((uint64_t)(x) & 0xff00000000000000ULL) >> 56) | \ |
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(((uint64_t)(x) & 0x00ff000000000000ULL) >> 40) | \ |
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(((uint64_t)(x) & 0x0000ff0000000000ULL) >> 24) | \ |
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(((uint64_t)(x) & 0x000000ff00000000ULL) >> 8) | \ |
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(((uint64_t)(x) & 0x00000000ff000000ULL) << 8) | \ |
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(((uint64_t)(x) & 0x0000000000ff0000ULL) << 24) | \ |
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(((uint64_t)(x) & 0x000000000000ff00ULL) << 40) | \ |
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(((uint64_t)(x) & 0x00000000000000ffULL) << 56))) |
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#endif |
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/*********************************************************************/ |
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// Macros to catch CUDA errors in CUDA runtime calls |
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#define CUDA_SAFE_CALL(call) \ |
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do { \ |
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cudaError_t err = call; \ |
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if (cudaSuccess != err) { \ |
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fprintf(stderr, "Cuda error in func '%s' at line %i : %s.\n", \ |
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__FUNCTION__, __LINE__, cudaGetErrorString(err) ); \ |
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exit(EXIT_FAILURE); \ |
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} \ |
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} while (0) |
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#define CUDA_CALL_OR_RET(call) do { \ |
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cudaError_t err = call; \ |
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if (cudaSuccess != err) { \ |
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cudaReportHardwareFailure(thr_id, err, __FUNCTION__); \ |
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return; \ |
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} \ |
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} while (0) |
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#define CUDA_CALL_OR_RET_X(call, ret) do { \ |
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cudaError_t err = call; \ |
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if (cudaSuccess != err) { \ |
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cudaReportHardwareFailure(thr_id, err, __FUNCTION__); \ |
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return ret; \ |
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} \ |
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} while (0) |
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/*********************************************************************/ |
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#ifdef _WIN64 |
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#define USE_XOR_ASM_OPTS 0 |
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#else |
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#define USE_XOR_ASM_OPTS 1 |
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#endif |
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#if USE_XOR_ASM_OPTS |
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// device asm for whirpool |
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__device__ __forceinline__ |
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uint64_t xor1(uint64_t a, uint64_t b) |
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{ |
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uint64_t result; |
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asm("xor.b64 %0, %1, %2;" : "=l"(result) : "l"(a), "l"(b)); |
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return result; |
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} |
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#else |
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#define xor1(a,b) (a ^ b) |
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#endif |
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#if USE_XOR_ASM_OPTS |
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// device asm for whirpool |
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__device__ __forceinline__ |
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uint64_t xor3(uint64_t a, uint64_t b, uint64_t c) |
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{ |
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uint64_t result; |
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asm("xor.b64 %0, %2, %3;\n\t" |
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"xor.b64 %0, %0, %1;\n\t" |
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/* output : input registers */ |
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: "=l"(result) : "l"(a), "l"(b), "l"(c)); |
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return result; |
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} |
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#else |
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#define xor3(a,b,c) (a ^ b ^ c) |
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#endif |
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#if USE_XOR_ASM_OPTS |
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// device asm for whirpool |
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__device__ __forceinline__ |
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uint64_t xor8(uint64_t a, uint64_t b, uint64_t c, uint64_t d,uint64_t e,uint64_t f,uint64_t g, uint64_t h) |
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{ |
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uint64_t result; |
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asm("xor.b64 %0, %1, %2;" : "=l"(result) : "l"(g) ,"l"(h)); |
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asm("xor.b64 %0, %0, %1;" : "+l"(result) : "l"(f)); |
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asm("xor.b64 %0, %0, %1;" : "+l"(result) : "l"(e)); |
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asm("xor.b64 %0, %0, %1;" : "+l"(result) : "l"(d)); |
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asm("xor.b64 %0, %0, %1;" : "+l"(result) : "l"(c)); |
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asm("xor.b64 %0, %0, %1;" : "+l"(result) : "l"(b)); |
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asm("xor.b64 %0, %0, %1;" : "+l"(result) : "l"(a)); |
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return result; |
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} |
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#else |
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#define xor8(a,b,c,d,e,f,g,h) ((a^b)^(c^d)^(e^f)^(g^h)) |
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#endif |
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// device asm for x17 |
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__device__ __forceinline__ |
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uint64_t xandx(uint64_t a, uint64_t b, uint64_t c) |
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{ |
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uint64_t result; |
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asm("{\n\t" |
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".reg .u64 n;\n\t" |
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"xor.b64 %0, %2, %3;\n\t" |
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"and.b64 n, %0, %1;\n\t" |
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"xor.b64 %0, n, %3;" |
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"}\n" |
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: "=l"(result) : "l"(a), "l"(b), "l"(c)); |
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return result; |
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} |
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// device asm for x17 |
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__device__ __forceinline__ |
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uint64_t sph_t64(uint64_t x) |
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{ |
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uint64_t result; |
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asm("{\n\t" |
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"and.b64 %0,%1,0xFFFFFFFFFFFFFFFF;\n\t" |
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"}\n" |
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: "=l"(result) : "l"(x)); |
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return result; |
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} |
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// device asm for x17 |
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__device__ __forceinline__ |
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uint64_t andor(uint64_t a, uint64_t b, uint64_t c) |
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{ |
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uint64_t result; |
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asm("{\n\t" |
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".reg .u64 m,n;\n\t" |
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"and.b64 m, %1, %2;\n\t" |
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" or.b64 n, %1, %2;\n\t" |
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"and.b64 %0, n, %3;\n\t" |
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" or.b64 %0, %0, m ;\n\t" |
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"}\n" |
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: "=l"(result) : "l"(a), "l"(b), "l"(c)); |
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return result; |
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} |
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// device asm for x17 |
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__device__ __forceinline__ |
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uint64_t shr_t64(uint64_t x, uint32_t n) |
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{ |
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uint64_t result; |
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asm("shr.b64 %0,%1,%2;\n\t" |
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"and.b64 %0,%0,0xFFFFFFFFFFFFFFFF;\n\t" /* useful ? */ |
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: "=l"(result) : "l"(x), "r"(n)); |
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return result; |
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} |
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// device asm for ? |
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__device__ __forceinline__ |
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uint64_t shl_t64(uint64_t x, uint32_t n) |
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{ |
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uint64_t result; |
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asm("shl.b64 %0,%1,%2;\n\t" |
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"and.b64 %0,%0,0xFFFFFFFFFFFFFFFF;\n\t" /* useful ? */ |
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: "=l"(result) : "l"(x), "r"(n)); |
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return result; |
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} |
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#ifndef USE_ROT_ASM_OPT |
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#define USE_ROT_ASM_OPT 1 |
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#endif |
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// 64-bit ROTATE RIGHT |
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#if __CUDA_ARCH__ >= 320 && USE_ROT_ASM_OPT == 1 |
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/* complicated sm >= 3.5 one (with Funnel Shifter beschleunigt), to bench */ |
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__device__ __forceinline__ |
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uint64_t ROTR64(const uint64_t value, const int offset) { |
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uint2 result; |
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if(offset < 32) { |
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asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.x) : "r"(__double2loint(__longlong_as_double(value))), "r"(__double2hiint(__longlong_as_double(value))), "r"(offset)); |
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asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.y) : "r"(__double2hiint(__longlong_as_double(value))), "r"(__double2loint(__longlong_as_double(value))), "r"(offset)); |
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} else { |
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asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.x) : "r"(__double2hiint(__longlong_as_double(value))), "r"(__double2loint(__longlong_as_double(value))), "r"(offset)); |
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asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.y) : "r"(__double2loint(__longlong_as_double(value))), "r"(__double2hiint(__longlong_as_double(value))), "r"(offset)); |
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} |
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return __double_as_longlong(__hiloint2double(result.y, result.x)); |
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} |
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#elif __CUDA_ARCH__ >= 120 && USE_ROT_ASM_OPT == 2 |
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__device__ __forceinline__ |
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uint64_t ROTR64(const uint64_t x, const int offset) |
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{ |
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uint64_t result; |
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asm("{\n\t" |
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".reg .b64 lhs;\n\t" |
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".reg .u32 roff;\n\t" |
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"shr.b64 lhs, %1, %2;\n\t" |
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"sub.u32 roff, 64, %2;\n\t" |
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"shl.b64 %0, %1, roff;\n\t" |
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"add.u64 %0, %0, lhs;\n\t" |
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"}\n" |
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: "=l"(result) : "l"(x), "r"(offset)); |
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return result; |
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} |
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#else |
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/* host */ |
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#define ROTR64(x, n) (((x) >> (n)) | ((x) << (64 - (n)))) |
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#endif |
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// 64-bit ROTATE LEFT |
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#if __CUDA_ARCH__ >= 320 && USE_ROT_ASM_OPT == 1 |
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__device__ __forceinline__ |
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uint64_t ROTL64(const uint64_t value, const int offset) { |
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uint2 result; |
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if(offset >= 32) { |
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asm("shf.l.wrap.b32 %0, %1, %2, %3;" : "=r"(result.x) : "r"(__double2loint(__longlong_as_double(value))), "r"(__double2hiint(__longlong_as_double(value))), "r"(offset)); |
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asm("shf.l.wrap.b32 %0, %1, %2, %3;" : "=r"(result.y) : "r"(__double2hiint(__longlong_as_double(value))), "r"(__double2loint(__longlong_as_double(value))), "r"(offset)); |
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} else { |
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asm("shf.l.wrap.b32 %0, %1, %2, %3;" : "=r"(result.x) : "r"(__double2hiint(__longlong_as_double(value))), "r"(__double2loint(__longlong_as_double(value))), "r"(offset)); |
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asm("shf.l.wrap.b32 %0, %1, %2, %3;" : "=r"(result.y) : "r"(__double2loint(__longlong_as_double(value))), "r"(__double2hiint(__longlong_as_double(value))), "r"(offset)); |
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} |
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return __double_as_longlong(__hiloint2double(result.y, result.x)); |
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} |
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#elif __CUDA_ARCH__ >= 120 && USE_ROT_ASM_OPT == 2 |
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__device__ __forceinline__ |
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uint64_t ROTL64(const uint64_t x, const int offset) |
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{ |
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uint64_t result; |
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asm("{\n\t" |
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".reg .b64 lhs;\n\t" |
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".reg .u32 roff;\n\t" |
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"shl.b64 lhs, %1, %2;\n\t" |
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"sub.u32 roff, 64, %2;\n\t" |
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"shr.b64 %0, %1, roff;\n\t" |
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"add.u64 %0, lhs, %0;\n\t" |
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"}\n" |
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: "=l"(result) : "l"(x), "r"(offset)); |
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return result; |
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} |
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#elif __CUDA_ARCH__ >= 320 && USE_ROT_ASM_OPT == 3 |
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__device__ |
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uint64_t ROTL64(const uint64_t x, const int offset) |
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{ |
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uint64_t res; |
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asm("{\n\t" |
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".reg .u32 tl,th,vl,vh;\n\t" |
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".reg .pred p;\n\t" |
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"mov.b64 {tl,th}, %1;\n\t" |
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"shf.l.wrap.b32 vl, tl, th, %2;\n\t" |
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"shf.l.wrap.b32 vh, th, tl, %2;\n\t" |
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"setp.lt.u32 p, %2, 32;\n\t" |
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"@!p mov.b64 %0, {vl,vh};\n\t" |
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"@p mov.b64 %0, {vh,vl};\n\t" |
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"}" |
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: "=l"(res) : "l"(x) , "r"(offset) |
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); |
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return res; |
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} |
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#else |
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/* host */ |
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#define ROTL64(x, n) (((x) << (n)) | ((x) >> (64 - (n)))) |
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#endif |
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__device__ __forceinline__ |
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uint64_t SWAPDWORDS(uint64_t value) |
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{ |
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#if __CUDA_ARCH__ >= 320 |
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uint2 temp; |
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asm("mov.b64 {%0, %1}, %2; ": "=r"(temp.x), "=r"(temp.y) : "l"(value)); |
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asm("mov.b64 %0, {%1, %2}; ": "=l"(value) : "r"(temp.y), "r"(temp.x)); |
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return value; |
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#else |
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return ROTL64(value, 32); |
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#endif |
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} |
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/* lyra2 - int2 operators */ |
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__device__ __forceinline__ |
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void LOHI(uint32_t &lo, uint32_t &hi, uint64_t x) { |
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asm("mov.b64 {%0,%1},%2; \n\t" |
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: "=r"(lo), "=r"(hi) : "l"(x)); |
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} |
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static __device__ __forceinline__ uint64_t devectorize(uint2 v) { return MAKE_ULONGLONG(v.x, v.y); } |
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static __device__ __forceinline__ uint2 vectorize(uint64_t v) { |
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uint2 result; |
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LOHI(result.x, result.y, v); |
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return result; |
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} |
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static __device__ __forceinline__ uint2 operator^ (uint2 a, uint2 b) { return make_uint2(a.x ^ b.x, a.y ^ b.y); } |
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static __device__ __forceinline__ uint2 operator& (uint2 a, uint2 b) { return make_uint2(a.x & b.x, a.y & b.y); } |
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static __device__ __forceinline__ uint2 operator| (uint2 a, uint2 b) { return make_uint2(a.x | b.x, a.y | b.y); } |
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static __device__ __forceinline__ uint2 operator~ (uint2 a) { return make_uint2(~a.x, ~a.y); } |
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static __device__ __forceinline__ void operator^= (uint2 &a, uint2 b) { a = a ^ b; } |
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static __device__ __forceinline__ uint2 operator+ (uint2 a, uint2 b) |
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{ |
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uint2 result; |
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asm("{\n\t" |
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"add.cc.u32 %0,%2,%4; \n\t" |
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"addc.u32 %1,%3,%5; \n\t" |
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"}\n\t" |
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: "=r"(result.x), "=r"(result.y) : "r"(a.x), "r"(a.y), "r"(b.x), "r"(b.y)); |
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return result; |
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} |
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static __device__ __forceinline__ void operator+= (uint2 &a, uint2 b) { a = a + b; } |
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static __device__ __forceinline__ uint2 operator- (uint2 a, uint2 b) |
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{ |
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uint2 result; |
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asm("{\n\t" |
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"sub.cc.u32 %0,%2,%4; \n\t" |
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"subc.u32 %1,%3,%5; \n\t" |
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"}\n\t" |
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: "=r"(result.x), "=r"(result.y) : "r"(a.x), "r"(a.y), "r"(b.x), "r"(b.y)); |
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return result; |
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} |
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/** |
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* basic multiplication between 64bit no carry outside that range (ie mul.lo.b64(a*b)) |
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* (what does uint64 "*" operator) |
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*/ |
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static __device__ __forceinline__ uint2 operator* (uint2 a, uint2 b) |
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{ |
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uint2 result; |
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asm("{\n\t" |
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"mul.lo.u32 %0,%2,%4; \n\t" |
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"mul.hi.u32 %1,%2,%4; \n\t" |
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"mad.lo.cc.u32 %1,%3,%4,%1; \n\t" |
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"madc.lo.u32 %1,%3,%5,%1; \n\t" |
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"}\n\t" |
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: "=r"(result.x), "=r"(result.y) : "r"(a.x), "r"(a.y), "r"(b.x), "r"(b.y)); |
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return result; |
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} |
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// uint2 ROR/ROL methods |
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__device__ __forceinline__ |
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uint2 ROR2(const uint2 a, const int offset) |
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{ |
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uint2 result; |
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#if __CUDA_ARCH__ > 300 |
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if (offset < 32) { |
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asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.x) : "r"(a.x), "r"(a.y), "r"(offset)); |
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asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.y) : "r"(a.y), "r"(a.x), "r"(offset)); |
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} else /* if (offset < 64) */ { |
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/* offset SHOULD BE < 64 ! */ |
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asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.x) : "r"(a.y), "r"(a.x), "r"(offset)); |
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asm("shf.r.wrap.b32 %0, %1, %2, %3;" : "=r"(result.y) : "r"(a.x), "r"(a.y), "r"(offset)); |
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} |
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#else |
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if (!offset) |
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result = a; |
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else if (offset < 32) { |
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result.y = ((a.y >> offset) | (a.x << (32 - offset))); |
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result.x = ((a.x >> offset) | (a.y << (32 - offset))); |
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} else if (offset == 32) { |
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result.y = a.x; |
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result.x = a.y; |
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} else { |
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result.y = ((a.x >> (offset - 32)) | (a.y << (64 - offset))); |
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result.x = ((a.y >> (offset - 32)) | (a.x << (64 - offset))); |
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} |
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#endif |
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return result; |
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} |
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__device__ __forceinline__ |
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uint2 ROL2(const uint2 a, const int offset) |
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{ |
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uint2 result; |
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#if __CUDA_ARCH__ > 300 |
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if (offset >= 32) { |
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asm("shf.l.wrap.b32 %0, %1, %2, %3;" : "=r"(result.x) : "r"(a.x), "r"(a.y), "r"(offset)); |
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asm("shf.l.wrap.b32 %0, %1, %2, %3;" : "=r"(result.y) : "r"(a.y), "r"(a.x), "r"(offset)); |
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} |
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else { |
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asm("shf.l.wrap.b32 %0, %1, %2, %3;" : "=r"(result.x) : "r"(a.y), "r"(a.x), "r"(offset)); |
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asm("shf.l.wrap.b32 %0, %1, %2, %3;" : "=r"(result.y) : "r"(a.x), "r"(a.y), "r"(offset)); |
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} |
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#else |
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if (!offset) |
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result = a; |
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else |
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result = ROR2(a, 64 - offset); |
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#endif |
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return result; |
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} |
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__device__ __forceinline__ |
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uint2 SWAPUINT2(uint2 value) |
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{ |
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|
return make_uint2(value.y, value.x); |
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} |
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/* uint2 for bmw512 - to double check later */ |
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__device__ __forceinline__ |
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static uint2 SHL2(uint2 a, int offset) |
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{ |
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#if __CUDA_ARCH__ > 300 |
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uint2 result; |
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if (offset < 32) { |
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asm("{\n\t" |
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"shf.l.clamp.b32 %1,%2,%3,%4; \n\t" |
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"shl.b32 %0,%2,%4; \n\t" |
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"}\n\t" |
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: "=r"(result.x), "=r"(result.y) : "r"(a.x), "r"(a.y), "r"(offset)); |
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} else { |
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asm("{\n\t" |
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"shf.l.clamp.b32 %1,%2,%3,%4; \n\t" |
|
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"shl.b32 %0,%2,%4; \n\t" |
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"}\n\t" |
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: "=r"(result.x), "=r"(result.y) : "r"(a.y), "r"(a.x), "r"(offset)); |
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} |
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return result; |
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#else |
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if (offset <= 32) { |
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a.y = (a.y << offset) | (a.x >> (32 - offset)); |
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a.x = (a.x << offset); |
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} else { |
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a.y = (a.x << (offset-32)); |
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|
a.x = 0; |
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|
} |
|
|
return a; |
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|
#endif |
|
|
} |
|
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|
|
|
__device__ __forceinline__ |
|
|
static uint2 SHR2(uint2 a, int offset) |
|
|
{ |
|
|
#if __CUDA_ARCH__ > 300 |
|
|
uint2 result; |
|
|
if (offset<32) { |
|
|
asm("{\n\t" |
|
|
"shf.r.clamp.b32 %0,%2,%3,%4; \n\t" |
|
|
"shr.b32 %1,%3,%4; \n\t" |
|
|
"}\n\t" |
|
|
: "=r"(result.x), "=r"(result.y) : "r"(a.x), "r"(a.y), "r"(offset)); |
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|
} else { |
|
|
asm("{\n\t" |
|
|
"shf.l.clamp.b32 %0,%2,%3,%4; \n\t" |
|
|
"shl.b32 %1,%3,%4; \n\t" |
|
|
"}\n\t" |
|
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: "=r"(result.x), "=r"(result.y) : "r"(a.y), "r"(a.x), "r"(offset)); |
|
|
} |
|
|
return result; |
|
|
#else |
|
|
if (offset <= 32) { |
|
|
a.x = (a.x >> offset) | (a.y << (32 - offset)); |
|
|
a.y = (a.y >> offset); |
|
|
} else { |
|
|
a.x = (a.y >> (offset - 32)); |
|
|
a.y = 0; |
|
|
} |
|
|
return a; |
|
|
#endif |
|
|
} |
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|
|
#endif // #ifndef CUDA_HELPER_H
|
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|
