freebsd-dev/contrib/libf2c/libF77/c_cos.c
1999-09-19 05:59:11 +00:00

18 lines
287 B
C

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