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