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130 lines
3.2 KiB
130 lines
3.2 KiB
5 years ago
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/*
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Defines the As/From conversors for double/float complex, you need to
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provide complex Type, the Name you want to use in the conversors,
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the complex Constructor method, and the Real and Imag complex
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accesor methods.
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See the std_complex.i and ccomplex.i for concrete examples.
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*/
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/*
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Ruby does not have native complex numbers. They are an extension in the
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STD library.
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*/
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%{
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static VALUE swig_rb_cComplex = Qnil;
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static ID swig_real_id = 0;
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static ID swig_imag_id = 0;
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int Ruby_Is_Complex( VALUE obj )
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{
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return ( (rb_respond_to( obj, swig_real_id ) == Qtrue) &&
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(rb_respond_to( obj, swig_imag_id ) == Qtrue) );
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}
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%}
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%init {
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rb_require("complex");
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swig_rb_cComplex = rb_const_get( rb_cObject, rb_intern("Complex") );
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if( swig_rb_cComplex == Qnil )
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rb_warn("Ruby's complex.so not found");
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swig_real_id = rb_intern("real");
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swig_imag_id = rb_intern("imag");
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}
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/* the common from conversor */
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%define %swig_fromcplx_conv(Type, Real, Imag)
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%fragment(SWIG_From_frag(Type),"header")
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{
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SWIGINTERNINLINE VALUE
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SWIG_From(Type)(%ifcplusplus(const Type&, Type) c)
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{
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VALUE args[] = {
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rb_float_new(Real(c)),
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rb_float_new(Imag(c))
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};
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return rb_class_new_instance(2, args, swig_rb_cComplex);
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}
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}
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%enddef
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/* the double case */
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%define %swig_cplxdbl_conv(Type, Constructor, Real, Imag)
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%fragment(SWIG_AsVal_frag(Type),"header",
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fragment=SWIG_AsVal_frag(double))
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{
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SWIGINTERN int
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SWIG_AsVal(Type) (VALUE o, Type* val)
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{
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if ( Ruby_Is_Complex( o ) ) {
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if (val) {
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VALUE real = rb_funcall(o, swig_real_id, 0 );
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VALUE imag = rb_funcall(o, swig_imag_id, 0 );
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double re = 0;
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SWIG_AsVal_double( real, &re );
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double im = 0;
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SWIG_AsVal_double( imag, &im );
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*val = Constructor(re, im);
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}
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return SWIG_OK;
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} else {
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double d;
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int res = SWIG_AddCast(SWIG_AsVal(double)(o, &d));
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if (SWIG_IsOK(res)) {
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if (val) *val = Constructor(d, 0.0);
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return res;
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}
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}
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return SWIG_TypeError;
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}
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}
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%swig_fromcplx_conv(Type, Real, Imag);
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%enddef
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/* the float case */
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%define %swig_cplxflt_conv(Type, Constructor, Real, Imag)
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%fragment(SWIG_AsVal_frag(Type),"header",
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fragment=SWIG_AsVal_frag(float),
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fragment=SWIG_AsVal_frag(double)) {
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SWIGINTERN int
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SWIG_AsVal(Type)(VALUE o, Type *val)
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{
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if ( Ruby_Is_Complex( o ) ) {
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VALUE real = rb_funcall(o, swig_real_id, 0 );
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VALUE imag = rb_funcall(o, swig_imag_id, 0 );
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double re = 0;
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SWIG_AsVal_double( real, &re );
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double im = 0;
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SWIG_AsVal_double( imag, &im );
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if ((-FLT_MAX <= re && re <= FLT_MAX) &&
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(-FLT_MAX <= im && im <= FLT_MAX)) {
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if (val) *val = Constructor(%numeric_cast(re, float),
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%numeric_cast(im, float));
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return SWIG_OK;
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} else {
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return SWIG_OverflowError;
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}
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} else {
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float re;
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int res = SWIG_AddCast(SWIG_AsVal(float)(o, &re));
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if (SWIG_IsOK(res)) {
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if (val) *val = Constructor(re, 0.0);
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return res;
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}
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}
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return SWIG_TypeError;
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}
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}
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%swig_fromcplx_conv(Type, Real, Imag);
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%enddef
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#define %swig_cplxflt_convn(Type, Constructor, Real, Imag) \
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%swig_cplxflt_conv(Type, Constructor, Real, Imag)
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#define %swig_cplxdbl_convn(Type, Constructor, Real, Imag) \
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%swig_cplxdbl_conv(Type, Constructor, Real, Imag)
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