diff options
Diffstat (limited to 'math/s_cexp.c')
| -rw-r--r-- | math/s_cexp.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/math/s_cexp.c b/math/s_cexp.c deleted file mode 100644 index 3a476bde3c..0000000000 --- a/math/s_cexp.c +++ /dev/null @@ -1,157 +0,0 @@ -/* Return value of complex exponential function for double complex value. - Copyright (C) 1997-2016 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <complex.h> -#include <fenv.h> -#include <math.h> -#include <math_private.h> -#include <float.h> - -__complex__ double -__cexp (__complex__ double x) -{ - __complex__ double retval; - int rcls = fpclassify (__real__ x); - int icls = fpclassify (__imag__ x); - - if (__glibc_likely (rcls >= FP_ZERO)) - { - /* Real part is finite. */ - if (__glibc_likely (icls >= FP_ZERO)) - { - /* Imaginary part is finite. */ - const int t = (int) ((DBL_MAX_EXP - 1) * M_LN2); - double sinix, cosix; - - if (__glibc_likely (fabs (__imag__ x) > DBL_MIN)) - { - __sincos (__imag__ x, &sinix, &cosix); - } - else - { - sinix = __imag__ x; - cosix = 1.0; - } - - if (__real__ x > t) - { - double exp_t = __ieee754_exp (t); - __real__ x -= t; - sinix *= exp_t; - cosix *= exp_t; - if (__real__ x > t) - { - __real__ x -= t; - sinix *= exp_t; - cosix *= exp_t; - } - } - if (__real__ x > t) - { - /* Overflow (original real part of x > 3t). */ - __real__ retval = DBL_MAX * cosix; - __imag__ retval = DBL_MAX * sinix; - } - else - { - double exp_val = __ieee754_exp (__real__ x); - __real__ retval = exp_val * cosix; - __imag__ retval = exp_val * sinix; - } - math_check_force_underflow_complex (retval); - } - else - { - /* 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 (""); - - feraiseexcept (FE_INVALID); - } - } - else if (__glibc_likely (rcls == FP_INFINITE)) - { - /* Real part is infinite. */ - if (__glibc_likely (icls >= FP_ZERO)) - { - /* Imaginary part is finite. */ - double value = signbit (__real__ x) ? 0.0 : HUGE_VAL; - - if (icls == FP_ZERO) - { - /* Imaginary part is 0.0. */ - __real__ retval = value; - __imag__ retval = __imag__ x; - } - else - { - double sinix, cosix; - - if (__glibc_likely (fabs (__imag__ x) > DBL_MIN)) - { - __sincos (__imag__ x, &sinix, &cosix); - } - else - { - sinix = __imag__ x; - cosix = 1.0; - } - - __real__ retval = __copysign (value, cosix); - __imag__ retval = __copysign (value, sinix); - } - } - else if (signbit (__real__ x) == 0) - { - __real__ retval = HUGE_VAL; - __imag__ retval = __nan (""); - - if (icls == FP_INFINITE) - feraiseexcept (FE_INVALID); - } - else - { - __real__ retval = 0.0; - __imag__ retval = __copysign (0.0, __imag__ x); - } - } - else - { - /* If the real part is NaN the result is NaN + iNaN unless the - imaginary part is zero. */ - __real__ retval = __nan (""); - if (icls == FP_ZERO) - __imag__ retval = __imag__ x; - else - { - __imag__ retval = __nan (""); - - if (rcls != FP_NAN || icls != FP_NAN) - feraiseexcept (FE_INVALID); - } - } - - return retval; -} -weak_alias (__cexp, cexp) -#ifdef NO_LONG_DOUBLE -strong_alias (__cexp, __cexpl) -weak_alias (__cexp, cexpl) -#endif |