gcc/libquadmath/math/csinq.c

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Makefile.am (libquadmath_la_SOURCES): Add new math/* files. 2012-11-01 Tobias Burnus <burnus@net-b.de> * Makefile.am (libquadmath_la_SOURCES): Add new math/* files. * Makefile.in: Regenerated. * math/acoshq.c: Update comment. * math/acosq.c: Ditto. * math/asinhq.c: Ditto. * math/asinq.c: Ditto. * math/atan2q.c: Ditto. * math/atanhq.c: Ditto. * math/ceilq.c: Ditto. * math/copysignq.c: Ditto. * math/cosq.c: Ditto. * math/coshq.c: Ditto. * math/erfq.c: Ditto. * math/fabsq.c: Ditto. * math/finiteq.c: Ditto. * math/floorq.c: Ditto. * math/fmodq.c: Ditto. * math/frexpq.c: Ditto. * math/isnanq.c: Ditto. * math/j0q.c: Ditto. * math/j1q.c: Ditto. * math/ldexpq.c: Ditto. * math/llroundq.c: Ditto. * math/log10q.c: Ditto. * math/log1pq.c: Ditto. * math/log2q.c: Ditto. * math/logq.c: Ditto. * math/lroundq.c: Ditto. * math/modfq.c: Ditto. * math/nextafterq.c: Ditto. * math/powq.c: Ditto. * math/rem_pio2q.c: Ditto. * math/remainderq.c: Ditto. * math/rintq.c: Ditto. * math/roundq.c: Ditto. * math/scalblnq.c: Ditto. * math/scalbnq.c: Ditto. * math/sincosq_kernel.c: Ditto. * math/sinq.c: Ditto. * math/tanq.c: Ditto. * math/expq.c: Ditto. (__expq_table, expq): Renamed local array from __expl_table. * math/cosq_kernel.c (__quadmath_kernel_cosq): Fix sign * handling. * math/cacoshq.c: Changes from GLIBC; fix returned sign. * math/casinhq.c: Changes from GLIBC to fix special-case. * math/cbrtq.c: Use modified GLIBC version. * math/complex.c (ccoshd, cexpq, clog10q, clogq, csinhq, csinq, ctanhq, ctanq): Moved to separates files. (mult_c128, div_c128): Removed no longer needed functions. (cexpiq): Call sincosq instead of sinq and cosq. (cosq): Call cosh(-re,im) instead of cosq/sinq/sinh/cosh. * math/ccoshq.c (ccoshq): New file, moved from complex.c and modified based on GLIBC. * math/cexpq.c (cexp): Ditto. * math/clog10q.c (clog10q): Ditto. * math/clogq.c (clogq): Ditto. * math/csinhq.c: Ditto. * math/csinq.c: Ditto. * math/csqrtq.c: Ditto. * math/ctanhq.c: Ditto. * math/ctanq.c: Ditto. * math/fmaq.c (fmaq): Port TININESS_AFTER_ROUNDING handling from GLIBC. * math/ilogbq.c (ilogbq): Add errno = EDOM handling. * math/isinf_nsq.c (__quadmath_isinf_nsq): New file, ported from GLIBC. * math/lgammaq.c (lgammaq): Add signgam handling. * math/sinhq.c (sinhq): Fix sign handling. * math/sinq_kernel.c (__quadmath_kernel_sinq): Ditto. * math/tgammaq.c (tgammaq): Ditto. * math/x2y2m1q.c: New file. * quadmath-imp.h (TININESS_AFTER_ROUNDING): New define. (__quadmath_x2y2m1q, __quadmath_isinf_nsq): New prototypes. From-SVN: r193063
2012-11-01 17:14:42 +01:00
/* Complex sine function for complex __float128.
Copyright (C) 1997-2012 Free Software Foundation, Inc.
Makefile.am (libquadmath_la_SOURCES): Add new math/* files. 2012-11-01 Tobias Burnus <burnus@net-b.de> * Makefile.am (libquadmath_la_SOURCES): Add new math/* files. * Makefile.in: Regenerated. * math/acoshq.c: Update comment. * math/acosq.c: Ditto. * math/asinhq.c: Ditto. * math/asinq.c: Ditto. * math/atan2q.c: Ditto. * math/atanhq.c: Ditto. * math/ceilq.c: Ditto. * math/copysignq.c: Ditto. * math/cosq.c: Ditto. * math/coshq.c: Ditto. * math/erfq.c: Ditto. * math/fabsq.c: Ditto. * math/finiteq.c: Ditto. * math/floorq.c: Ditto. * math/fmodq.c: Ditto. * math/frexpq.c: Ditto. * math/isnanq.c: Ditto. * math/j0q.c: Ditto. * math/j1q.c: Ditto. * math/ldexpq.c: Ditto. * math/llroundq.c: Ditto. * math/log10q.c: Ditto. * math/log1pq.c: Ditto. * math/log2q.c: Ditto. * math/logq.c: Ditto. * math/lroundq.c: Ditto. * math/modfq.c: Ditto. * math/nextafterq.c: Ditto. * math/powq.c: Ditto. * math/rem_pio2q.c: Ditto. * math/remainderq.c: Ditto. * math/rintq.c: Ditto. * math/roundq.c: Ditto. * math/scalblnq.c: Ditto. * math/scalbnq.c: Ditto. * math/sincosq_kernel.c: Ditto. * math/sinq.c: Ditto. * math/tanq.c: Ditto. * math/expq.c: Ditto. (__expq_table, expq): Renamed local array from __expl_table. * math/cosq_kernel.c (__quadmath_kernel_cosq): Fix sign * handling. * math/cacoshq.c: Changes from GLIBC; fix returned sign. * math/casinhq.c: Changes from GLIBC to fix special-case. * math/cbrtq.c: Use modified GLIBC version. * math/complex.c (ccoshd, cexpq, clog10q, clogq, csinhq, csinq, ctanhq, ctanq): Moved to separates files. (mult_c128, div_c128): Removed no longer needed functions. (cexpiq): Call sincosq instead of sinq and cosq. (cosq): Call cosh(-re,im) instead of cosq/sinq/sinh/cosh. * math/ccoshq.c (ccoshq): New file, moved from complex.c and modified based on GLIBC. * math/cexpq.c (cexp): Ditto. * math/clog10q.c (clog10q): Ditto. * math/clogq.c (clogq): Ditto. * math/csinhq.c: Ditto. * math/csinq.c: Ditto. * math/csqrtq.c: Ditto. * math/ctanhq.c: Ditto. * math/ctanq.c: Ditto. * math/fmaq.c (fmaq): Port TININESS_AFTER_ROUNDING handling from GLIBC. * math/ilogbq.c (ilogbq): Add errno = EDOM handling. * math/isinf_nsq.c (__quadmath_isinf_nsq): New file, ported from GLIBC. * math/lgammaq.c (lgammaq): Add signgam handling. * math/sinhq.c (sinhq): Fix sign handling. * math/sinq_kernel.c (__quadmath_kernel_sinq): Ditto. * math/tgammaq.c (tgammaq): Ditto. * math/x2y2m1q.c: New file. * quadmath-imp.h (TININESS_AFTER_ROUNDING): New define. (__quadmath_x2y2m1q, __quadmath_isinf_nsq): New prototypes. From-SVN: r193063
2012-11-01 17:14:42 +01:00
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 "quadmath-imp.h"
#ifdef HAVE_FENV_H
# include <fenv.h>
#endif
__complex128
csinq (__complex128 x)
{
__complex128 retval;
int negate = signbitq (__real__ x);
int rcls = fpclassifyq (__real__ x);
int icls = fpclassifyq (__imag__ x);
__real__ x = fabsq (__real__ x);
if (__builtin_expect (icls >= QUADFP_ZERO, 1))
{
/* Imaginary part is finite. */
if (__builtin_expect (rcls >= QUADFP_ZERO, 1))
{
/* Real part is finite. */
const int t = (int) ((FLT128_MAX_EXP - 1) * M_LN2q);
__float128 sinix, cosix;
if (__builtin_expect (rcls != QUADFP_SUBNORMAL, 1))
{
sincosq (__real__ x, &sinix, &cosix);
}
else
{
sinix = __real__ x;
cosix = 1.0Q;
}
if (fabsq (__imag__ x) > t)
{
__float128 exp_t = expq (t);
__float128 ix = fabsq (__imag__ x);
if (signbitq (__imag__ x))
cosix = -cosix;
ix -= t;
sinix *= exp_t / 2.0Q;
cosix *= exp_t / 2.0Q;
if (ix > t)
{
ix -= t;
sinix *= exp_t;
cosix *= exp_t;
}
if (ix > t)
{
/* Overflow (original imaginary part of x > 3t). */
__real__ retval = FLT128_MAX * sinix;
__imag__ retval = FLT128_MAX * cosix;
}
else
{
__float128 exp_val = expq (ix);
__real__ retval = exp_val * sinix;
__imag__ retval = exp_val * cosix;
}
}
else
{
__real__ retval = coshq (__imag__ x) * sinix;
__imag__ retval = sinhq (__imag__ x) * cosix;
}
if (negate)
__real__ retval = -__real__ retval;
}
else
{
if (icls == QUADFP_ZERO)
{
/* Imaginary part is 0.0. */
__real__ retval = nanq ("");
__imag__ retval = __imag__ x;
#ifdef HAVE_FENV_H
if (rcls == QUADFP_INFINITE)
feraiseexcept (FE_INVALID);
#endif
}
else
{
__real__ retval = nanq ("");
__imag__ retval = nanq ("");
#ifdef HAVE_FENV_H
feraiseexcept (FE_INVALID);
#endif
}
}
}
else if (icls == QUADFP_INFINITE)
{
/* Imaginary part is infinite. */
if (rcls == QUADFP_ZERO)
{
/* Real part is 0.0. */
__real__ retval = copysignq (0.0Q, negate ? -1.0Q : 1.0Q);
__imag__ retval = __imag__ x;
}
else if (rcls > QUADFP_ZERO)
{
/* Real part is finite. */
__float128 sinix, cosix;
if (__builtin_expect (rcls != QUADFP_SUBNORMAL, 1))
{
sincosq (__real__ x, &sinix, &cosix);
}
else
{
sinix = __real__ x;
cosix = 1.0;
}
__real__ retval = copysignq (HUGE_VALQ, sinix);
__imag__ retval = copysignq (HUGE_VALQ, cosix);
if (negate)
__real__ retval = -__real__ retval;
if (signbitq (__imag__ x))
__imag__ retval = -__imag__ retval;
}
else
{
/* The addition raises the invalid exception. */
__real__ retval = nanq ("");
__imag__ retval = HUGE_VALQ;
#ifdef HAVE_FENV_H
if (rcls == QUADFP_INFINITE)
feraiseexcept (FE_INVALID);
#endif
}
}
else
{
if (rcls == QUADFP_ZERO)
__real__ retval = copysignq (0.0Q, negate ? -1.0Q : 1.0Q);
else
__real__ retval = nanq ("");
__imag__ retval = nanq ("");
}
return retval;
}