| /** |
| * This file has no copyright assigned and is placed in the Public Domain. |
| * This file is part of the w64 mingw-runtime package. |
| * No warranty is given; refer to the file DISCLAIMER.PD within this package. |
| */ |
| /* |
| cproj.c |
| Contributed by Danny Smith |
| 2003-10-20 |
| */ |
| |
| #include <math.h> |
| #include <complex.h> |
| |
| /* Return the value of the projection onto the Riemann sphere.*/ |
| |
| double complex cproj (double complex Z) |
| { |
| complex double Res = Z; |
| if (isinf (__real__ Z) || isinf (__imag__ Z)) |
| { |
| __real__ Res = HUGE_VAL; |
| __imag__ Res = copysign (0.0, __imag__ Z); |
| } |
| return Res; |
| } |
| |