diff options
Diffstat (limited to 'sysdeps/libm-ieee754/s_cexp.c')
| -rw-r--r-- | sysdeps/libm-ieee754/s_cexp.c | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/sysdeps/libm-ieee754/s_cexp.c b/sysdeps/libm-ieee754/s_cexp.c index 46f9f612eb..233a40014f 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 double complex value. +/* Return value of complex exponential function for float 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. @@ -31,33 +31,52 @@ __cexp (__complex__ double x) { if (isfinite (__imag__ x)) { - retval = __exp (__real__ x) * (__cos (__imag__ x) - + 1i * __sin (__imag__ x)); + double exp_val = __exp (__real__ x); + + __real__ retval = exp_val * __cos (__imag__ x); + __imag__ retval = exp_val * __sin (__imag__ x); } else - /* If the imaginary part is +-inf or NaN and the real part is - not +-inf the result is NaN + iNan. */ - retval = __nan ("") + 1.0i * __nan (""); + { + /* If the imaginary part is +-inf or NaN and the real part + is not +-inf the result is NaN + iNaN. */ + __real__ retval = __nan (""); + __imag__ retval = __nan (""); + } } else if (__isinf (__real__ x)) { - if (isfinite (__imag x)) + if (isfinite (__imag__ x)) { if (signbit (__real__ x) == 0 && __imag__ x == 0.0) retval = HUGE_VAL; else - retval = ((signbit (__real__ x) ? 0.0 : HUGE_VAL) - * (__cos (__imag__ x) + 1i * __sin (__imag__ x))); + { + double value = signbit (__real__ x) ? 0.0 : HUGE_VAL; + + __real__ retval = value * __cos (__imag__ x); + __imag__ retval = value * __sin (__imag__ x); + } + } + else if (signbit (__real__ x) == 0) + { + __real__ retval = HUGE_VAL; + __imag__ retval = __nan (""); } - else if (signbit (__real__ x)) - retval = HUGE_VAL + 1.0i * __nan (""); else retval = 0.0; } else - /* If the real part is NaN the result is NaN + iNan. */ - retval = __nan ("") + 1.0i * __nan (""); + { + /* If the real part is NaN the result is NaN + iNaN. */ + __real__ retval = __nan (""); + __imag__ retval = __nan (""); + } return retval; } weak_alias (__cexp, cexp) +#ifdef NO_LONG_DOUBLE +string_alias (__cexp, __cexpl) +weak_alias (__cexp, cexpl) +#endif |