diff options
Diffstat (limited to 'winsup/mingw/mingwex/complex/ctanh.c')
-rw-r--r-- | winsup/mingw/mingwex/complex/ctanh.c | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/winsup/mingw/mingwex/complex/ctanh.c b/winsup/mingw/mingwex/complex/ctanh.c deleted file mode 100644 index 6d3e615da..000000000 --- a/winsup/mingw/mingwex/complex/ctanh.c +++ /dev/null @@ -1,44 +0,0 @@ -/* ctanh.c */ - -/* - Contributed by Danny Smith - 2003-10-20 -*/ - - -#include <math.h> -#include <complex.h> -#include <errno.h> - -/* - ctanh (x + I * y) = (sinh (2 * x) + sin (2 * y) * I ) - / (cosh (2 * x) + cos (2 * y)) . -*/ - -double complex -ctanh (double complex Z) -{ - double complex Res; - double two_R = 2.0 * __real__ Z; - double two_I = 2.0 * __imag__ Z; - double denom = cosh (two_R) + cos (two_I); - - if (denom == 0.0) - { - errno = ERANGE; - __real__ Res = HUGE_VAL; - __imag__ Res = HUGE_VAL; - } - else if ( isinf (denom)) - { - errno = ERANGE; - __real__ Res = two_R > 0 ? 1.0 : -1.0; - __imag__ Res = 0.0; - } - else - { - __real__ Res = sinh (two_R) / denom; - __imag__ Res = sin (two_I) / denom; - } - return Res; -} |