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19 lines
320 B
19 lines
320 B
#include "fe.h" |
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#include "crypto_verify_32.h" |
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/* |
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return 1 if f == 0 |
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return 0 if f != 0 |
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Preconditions: |
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|f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. |
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*/ |
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static const unsigned char zero[32] = {}; |
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int fe_isnonzero(const fe f) |
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{ |
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unsigned char s[32]; |
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fe_tobytes(s,f); |
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return crypto_verify_32(s,zero); |
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}
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