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Diffstat (limited to 'math/s_csinf.c')
| -rw-r--r-- | math/s_csinf.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/math/s_csinf.c b/math/s_csinf.c deleted file mode 100644 index 1256abcb85..0000000000 --- a/math/s_csinf.c +++ /dev/null @@ -1,169 +0,0 @@ -/* Complex sine function for float. - 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__ float -__csinf (__complex__ float x) -{ - __complex__ float retval; - int negate = signbit (__real__ x); - int rcls = fpclassify (__real__ x); - int icls = fpclassify (__imag__ x); - - __real__ x = fabsf (__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) ((FLT_MAX_EXP - 1) * M_LN2); - float sinix, cosix; - - if (__glibc_likely (__real__ x > FLT_MIN)) - { - __sincosf (__real__ x, &sinix, &cosix); - } - else - { - sinix = __real__ x; - cosix = 1.0f; - } - - if (negate) - sinix = -sinix; - - if (fabsf (__imag__ x) > t) - { - float exp_t = __ieee754_expf (t); - float ix = fabsf (__imag__ x); - if (signbit (__imag__ x)) - cosix = -cosix; - ix -= t; - sinix *= exp_t / 2.0f; - cosix *= exp_t / 2.0f; - if (ix > t) - { - ix -= t; - sinix *= exp_t; - cosix *= exp_t; - } - if (ix > t) - { - /* Overflow (original imaginary part of x > 3t). */ - __real__ retval = FLT_MAX * sinix; - __imag__ retval = FLT_MAX * cosix; - } - else - { - float exp_val = __ieee754_expf (ix); - __real__ retval = exp_val * sinix; - __imag__ retval = exp_val * cosix; - } - } - else - { - __real__ retval = __ieee754_coshf (__imag__ x) * sinix; - __imag__ retval = __ieee754_sinhf (__imag__ x) * cosix; - } - - math_check_force_underflow_complex (retval); - } - else - { - if (icls == FP_ZERO) - { - /* Imaginary part is 0.0. */ - __real__ retval = __nanf (""); - __imag__ retval = __imag__ x; - - if (rcls == FP_INFINITE) - feraiseexcept (FE_INVALID); - } - else - { - __real__ retval = __nanf (""); - __imag__ retval = __nanf (""); - - feraiseexcept (FE_INVALID); - } - } - } - else if (icls == FP_INFINITE) - { - /* Imaginary part is infinite. */ - if (rcls == FP_ZERO) - { - /* Real part is 0.0. */ - __real__ retval = __copysignf (0.0, negate ? -1.0 : 1.0); - __imag__ retval = __imag__ x; - } - else if (rcls > FP_ZERO) - { - /* Real part is finite. */ - float sinix, cosix; - - if (__glibc_likely (__real__ x > FLT_MIN)) - { - __sincosf (__real__ x, &sinix, &cosix); - } - else - { - sinix = __real__ x; - cosix = 1.0f; - } - - __real__ retval = __copysignf (HUGE_VALF, sinix); - __imag__ retval = __copysignf (HUGE_VALF, cosix); - - if (negate) - __real__ retval = -__real__ retval; - if (signbit (__imag__ x)) - __imag__ retval = -__imag__ retval; - } - else - { - /* The addition raises the invalid exception. */ - __real__ retval = __nanf (""); - __imag__ retval = HUGE_VALF; - - if (rcls == FP_INFINITE) - feraiseexcept (FE_INVALID); - } - } - else - { - if (rcls == FP_ZERO) - __real__ retval = __copysignf (0.0, negate ? -1.0 : 1.0); - else - __real__ retval = __nanf (""); - __imag__ retval = __nanf (""); - } - - return retval; -} -#ifndef __csinf -weak_alias (__csinf, csinf) -#endif |