gcc/f/runtime/libF77/c_cos.c

   1 #include "f2c.h"
   2
   3 #ifdef KR_headers
   4 extern double sin(), cos(), sinh(), cosh();
   5
   6 VOID c_cos(resx, z) complex *resx, *z;
   7 #else
   8 #undef abs
   9 #include <math.h>
  10
  11 void c_cos(complex *resx, complex *z)
  12 #endif
  13 {
  14 complex res;
  15
  16 res.r = cos(z->r) * cosh(z->i);
  17 res.i = - sin(z->r) * sinh(z->i);
  18
  19 resx->r = res.r;
  20 resx->i = res.i;
  21 }