NetBSD/gnu/dist/toolchain/libf2c/libF77/c_sin.c

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#include "f2c.h"
#ifdef KR_headers
extern double sin(), cos(), sinh(), cosh();
VOID c_sin(r, z) complex *r, *z;
#else
#undef abs
#include "math.h"
void c_sin(complex *r, complex *z)
#endif
{
double zi = z->i, zr = z->r;
r->r = sin(zr) * cosh(zi);
r->i = cos(zr) * sinh(zi);
}