freebsd-skq/contrib/libf2c/libF77/c_sin.c

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