diff options
Diffstat (limited to 'math/s_csin.c')
| -rw-r--r-- | math/s_csin.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/math/s_csin.c b/math/s_csin.c deleted file mode 100644 index e071aa650e..0000000000 --- a/math/s_csin.c +++ /dev/null @@ -1,171 +0,0 @@ -/* Complex sine function for double. - 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 -__csin (__complex__ double x) -{ - __complex__ double retval; - int negate = signbit (__real__ x); - int rcls = fpclassify (__real__ x); - int icls = fpclassify (__imag__ x); - - __real__ x = fabs (__real__ x); - - if (__glibc_likely (icls >= FP_ZERO)) - { - /* Imaginary part is finite. */ - if (__glibc_likely (rcls >= FP_ZERO)) - { - /* Real part is finite. */ - const int t = (int) ((DBL_MAX_EXP - 1) * M_LN2); - double sinix, cosix; - - if (__glibc_likely (__real__ x > DBL_MIN)) - { - __sincos (__real__ x, &sinix, &cosix); - } - else - { - sinix = __real__ x; - cosix = 1.0; - } - - if (negate) - sinix = -sinix; - - if (fabs (__imag__ x) > t) - { - double exp_t = __ieee754_exp (t); - double ix = fabs (__imag__ x); - if (signbit (__imag__ x)) - cosix = -cosix; - ix -= t; - sinix *= exp_t / 2.0; - cosix *= exp_t / 2.0; - if (ix > t) - { - ix -= t; - sinix *= exp_t; - cosix *= exp_t; - } - if (ix > t) - { - /* Overflow (original imaginary part of x > 3t). */ - __real__ retval = DBL_MAX * sinix; - __imag__ retval = DBL_MAX * cosix; - } - else - { - double exp_val = __ieee754_exp (ix); - __real__ retval = exp_val * sinix; - __imag__ retval = exp_val * cosix; - } - } - else - { - __real__ retval = __ieee754_cosh (__imag__ x) * sinix; - __imag__ retval = __ieee754_sinh (__imag__ x) * cosix; - } - - math_check_force_underflow_complex (retval); - } - else - { - if (icls == FP_ZERO) - { - /* Imaginary part is 0.0. */ - __real__ retval = __nan (""); - __imag__ retval = __imag__ x; - - if (rcls == FP_INFINITE) - feraiseexcept (FE_INVALID); - } - else - { - __real__ retval = __nan (""); - __imag__ retval = __nan (""); - - feraiseexcept (FE_INVALID); - } - } - } - else if (icls == FP_INFINITE) - { - /* Imaginary part is infinite. */ - if (rcls == FP_ZERO) - { - /* Real part is 0.0. */ - __real__ retval = __copysign (0.0, negate ? -1.0 : 1.0); - __imag__ retval = __imag__ x; - } - else if (rcls > FP_ZERO) - { - /* Real part is finite. */ - double sinix, cosix; - - if (__glibc_likely (__real__ x > DBL_MIN)) - { - __sincos (__real__ x, &sinix, &cosix); - } - else - { - sinix = __real__ x; - cosix = 1.0; - } - - __real__ retval = __copysign (HUGE_VAL, sinix); - __imag__ retval = __copysign (HUGE_VAL, cosix); - - if (negate) - __real__ retval = -__real__ retval; - if (signbit (__imag__ x)) - __imag__ retval = -__imag__ retval; - } - else - { - /* The addition raises the invalid exception. */ - __real__ retval = __nan (""); - __imag__ retval = HUGE_VAL; - - if (rcls == FP_INFINITE) - feraiseexcept (FE_INVALID); - } - } - else - { - if (rcls == FP_ZERO) - __real__ retval = __copysign (0.0, negate ? -1.0 : 1.0); - else - __real__ retval = __nan (""); - __imag__ retval = __nan (""); - } - - return retval; -} -weak_alias (__csin, csin) -#ifdef NO_LONG_DOUBLE -strong_alias (__csin, __csinl) -weak_alias (__csin, csinl) -#endif |