freebsd-src/lib/libF77/c_exp.c

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