diff options
Diffstat (limited to 'sysdeps/libm-ieee754/s_cexp.c')
| -rw-r--r-- | sysdeps/libm-ieee754/s_cexp.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/sysdeps/libm-ieee754/s_cexp.c b/sysdeps/libm-ieee754/s_cexp.c index b99b042d78..5e68f585f7 100644 --- a/sysdeps/libm-ieee754/s_cexp.c +++ b/sysdeps/libm-ieee754/s_cexp.c @@ -1,4 +1,4 @@ -/* Return value of complex exponential function for float complex value. +/* Return value of complex exponential function for double complex value. Copyright (C) 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -21,17 +21,23 @@ #include <complex.h> #include <math.h> +#include "math_private.h" + __complex__ double __cexp (__complex__ double x) { __complex__ double retval; + int rcls = fpclassify (__real__ x); + int icls = fpclassify (__imag__ x); - if (isfinite (__real__ x)) + if (rcls >= FP_ZERO) { - if (isfinite (__imag__ x)) + /* Real part is finite. */ + if (icls >= FP_ZERO) { - double exp_val = __exp (__real__ x); + /* Imaginary part is finite. */ + double exp_val = __ieee754_exp (__real__ x); if (isfinite (exp_val)) { @@ -52,14 +58,17 @@ __cexp (__complex__ double x) __imag__ retval = __nan (""); } } - else if (__isinf (__real__ x)) + else if (rcls == FP_INFINITE) { - if (isfinite (__imag__ x)) + /* Real part is infinite. */ + if (icls >= FP_ZERO) { + /* Imaginary part is finite. */ double value = signbit (__real__ x) ? 0.0 : HUGE_VAL; - if (__imag__ x == 0.0) + if (icls == FP_ZERO) { + /* Imaginary part is 0.0. */ __real__ retval = value; __imag__ retval = __imag__ x; } |