fa23b18209
PR fortran/46416 * quadmath.h (cacosq, cacoshq, casinq, casinhq, catanq, catanhq): New prototypes. (M_Eq, M_LOG2Eq, M_LOG10Eq, M_LN2q, M_LN10q, M_PIq, M_PI_2q, M_PI_4q, M_1_PIq, M_2_PIq, M_2_SQRTPIq, M_SQRT2q, M_SQRT1_2q): Define. * quadmath_weak.h (cacosq, cacoshq, casinq, casinhq, catanq, catanhq): Add. * quadmath-imp.h (fpclassifyq, QUADFP_NAN, QUADFP_INFINITE, QUADFP_ZERO, QUADFP_SUBNORMAL, QUADFP_NORMAL): Define. * quadmath.map (QUADMATH_1.0): Add cacosq, cacoshq, casinq, casinhq, catanq and catanhq. * Makefile.am (libquadmath_la_SOURCES): Add math/cacosq.c, math/cacoshq.c, math/casinq.c, math/casinhq.c, math/catanq.c and math/catanhq.c. * Makefile.in: Regenerated. * libquadmath.texi (cacosq, cacoshq, casinq, casinhq, catanq, catanhq): Add. * math/cacoshq.c: New file. * math/cacosq.c: New file. * math/catanq.c: New file. * math/catanhq.c: New file. * math/casinq.c: New file. * math/casinhq.c: New file. * math/hypotq.c (hypotq): Use Q suffix instead of L. * math/atan2q.c (tiny, pi_o_4, pi_o_2, pi, pi_lo, atan2q): Likewise. * math/cosq.c (cosq): Likewise. From-SVN: r168853
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/* Return arc hyperbole tangent for __float128 value.
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Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include "quadmath-imp.h"
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__complex128
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catanhq (__complex128 x)
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{
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__complex128 res;
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int rcls = fpclassifyq (__real__ x);
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int icls = fpclassifyq (__imag__ x);
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if (rcls <= QUADFP_INFINITE || icls <= QUADFP_INFINITE)
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{
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if (icls == QUADFP_INFINITE)
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{
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__real__ res = copysignq (0.0, __real__ x);
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__imag__ res = copysignq (M_PI_2q, __imag__ x);
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}
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else if (rcls == QUADFP_INFINITE || rcls == QUADFP_ZERO)
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{
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__real__ res = copysignq (0.0, __real__ x);
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if (icls >= QUADFP_ZERO)
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__imag__ res = copysignq (M_PI_2q, __imag__ x);
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else
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__imag__ res = nanq ("");
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}
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else
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{
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__real__ res = nanq ("");
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__imag__ res = nanq ("");
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}
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}
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else if (rcls == QUADFP_ZERO && icls == QUADFP_ZERO)
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{
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res = x;
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}
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else
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{
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__float128 i2, num, den;
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i2 = __imag__ x * __imag__ x;
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num = 1.0 + __real__ x;
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num = i2 + num * num;
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den = 1.0 - __real__ x;
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den = i2 + den * den;
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__real__ res = 0.25 * (logq (num) - logq (den));
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den = 1 - __real__ x * __real__ x - i2;
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__imag__ res = 0.5 * atan2q (2.0 * __imag__ x, den);
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}
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return res;
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}
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