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authorBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
committerBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/libquadmath/math/csinhq.c
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/libquadmath/math/csinhq.c')
-rw-r--r--gcc-4.9/libquadmath/math/csinhq.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/gcc-4.9/libquadmath/math/csinhq.c b/gcc-4.9/libquadmath/math/csinhq.c
new file mode 100644
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+/* Complex sine hyperbole function for complex __float128.
+ Copyright (C) 1997-2012 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 "quadmath-imp.h"
+
+#ifdef HAVE_FENV_H
+# include <fenv.h>
+#endif
+
+
+__complex128
+csinhq (__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 (rcls >= QUADFP_ZERO, 1))
+ {
+ /* Real part is finite. */
+ if (__builtin_expect (icls >= QUADFP_ZERO, 1))
+ {
+ /* Imaginary part is finite. */
+ const int t = (int) ((FLT128_MAX_EXP - 1) * M_LN2q);
+ __float128 sinix, cosix;
+
+ if (__builtin_expect (icls != QUADFP_SUBNORMAL, 1))
+ {
+ sincosq (__imag__ x, &sinix, &cosix);
+ }
+ else
+ {
+ sinix = __imag__ x;
+ cosix = 1.0Q;
+ }
+
+ if (fabsq (__real__ x) > t)
+ {
+ __float128 exp_t = expq (t);
+ __float128 rx = fabsq (__real__ x);
+ if (signbitq (__real__ x))
+ cosix = -cosix;
+ rx -= t;
+ sinix *= exp_t / 2.0Q;
+ cosix *= exp_t / 2.0Q;
+ if (rx > t)
+ {
+ rx -= t;
+ sinix *= exp_t;
+ cosix *= exp_t;
+ }
+ if (rx > t)
+ {
+ /* Overflow (original real part of x > 3t). */
+ __real__ retval = FLT128_MAX * cosix;
+ __imag__ retval = FLT128_MAX * sinix;
+ }
+ else
+ {
+ __float128 exp_val = expq (rx);
+ __real__ retval = exp_val * cosix;
+ __imag__ retval = exp_val * sinix;
+ }
+ }
+ else
+ {
+ __real__ retval = sinhq (__real__ x) * cosix;
+ __imag__ retval = coshq (__real__ x) * sinix;
+ }
+
+ if (negate)
+ __real__ retval = -__real__ retval;
+ }
+ else
+ {
+ if (rcls == QUADFP_ZERO)
+ {
+ /* Real part is 0.0. */
+ __real__ retval = copysignq (0.0Q, negate ? -1.0Q : 1.0Q);
+ __imag__ retval = nanq ("") + nanq ("");
+
+#ifdef HAVE_FENV_H
+ if (icls == QUADFP_INFINITE)
+ feraiseexcept (FE_INVALID);
+#endif
+ }
+ else
+ {
+ __real__ retval = nanq ("");
+ __imag__ retval = nanq ("");
+
+#ifdef HAVE_FENV_H
+ feraiseexcept (FE_INVALID);
+#endif
+ }
+ }
+ }
+ else if (rcls == QUADFP_INFINITE)
+ {
+ /* Real part is infinite. */
+ if (__builtin_expect (icls > QUADFP_ZERO, 1))
+ {
+ /* Imaginary part is finite. */
+ __float128 sinix, cosix;
+
+ if (__builtin_expect (icls != QUADFP_SUBNORMAL, 1))
+ {
+ sincosq (__imag__ x, &sinix, &cosix);
+ }
+ else
+ {
+ sinix = __imag__ x;
+ cosix = 1.0;
+ }
+
+ __real__ retval = copysignq (HUGE_VALQ, cosix);
+ __imag__ retval = copysignq (HUGE_VALQ, sinix);
+
+ if (negate)
+ __real__ retval = -__real__ retval;
+ }
+ else if (icls == QUADFP_ZERO)
+ {
+ /* Imaginary part is 0.0. */
+ __real__ retval = negate ? -HUGE_VALQ : HUGE_VALQ;
+ __imag__ retval = __imag__ x;
+ }
+ else
+ {
+ /* The addition raises the invalid exception. */
+ __real__ retval = HUGE_VALQ;
+ __imag__ retval = nanq ("") + nanq ("");
+
+#ifdef HAVE_FENV_H
+ if (icls == QUADFP_INFINITE)
+ feraiseexcept (FE_INVALID);
+#endif
+ }
+ }
+ else
+ {
+ __real__ retval = nanq ("");
+ __imag__ retval = __imag__ x == 0.0Q ? __imag__ x : nanq ("");
+ }
+
+ return retval;
+}