#include "f2c.h"#ifdef KR_headersextern 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, zi = z->i;expx = exp(z->r);r->r = expx * cos(zi);r->i = expx * sin(zi);}