[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/math/s_clogl.c b/ap/libc/glibc/glibc-2.22/math/s_clogl.c
new file mode 100644
index 0000000..aebff2a
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/math/s_clogl.c
@@ -0,0 +1,125 @@
+/* Compute complex natural logarithm.
+ Copyright (C) 1997-2015 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 <math.h>
+#include <math_private.h>
+#include <float.h>
+
+/* To avoid spurious underflows, use this definition to treat IBM long
+ double as approximating an IEEE-style format. */
+#if LDBL_MANT_DIG == 106
+# undef LDBL_EPSILON
+# define LDBL_EPSILON 0x1p-106L
+#endif
+
+__complex__ long double
+__clogl (__complex__ long double x)
+{
+ __complex__ long double result;
+ int rcls = fpclassify (__real__ x);
+ int icls = fpclassify (__imag__ x);
+
+ if (__glibc_unlikely (rcls == FP_ZERO && icls == FP_ZERO))
+ {
+ /* Real and imaginary part are 0.0. */
+ __imag__ result = signbit (__real__ x) ? M_PIl : 0.0;
+ __imag__ result = __copysignl (__imag__ result, __imag__ x);
+ /* Yes, the following line raises an exception. */
+ __real__ result = -1.0 / fabsl (__real__ x);
+ }
+ else if (__glibc_likely (rcls != FP_NAN && icls != FP_NAN))
+ {
+ /* Neither real nor imaginary part is NaN. */
+ long double absx = fabsl (__real__ x), absy = fabsl (__imag__ x);
+ int scale = 0;
+
+ if (absx < absy)
+ {
+ long double t = absx;
+ absx = absy;
+ absy = t;
+ }
+
+ if (absx > LDBL_MAX / 2.0L)
+ {
+ scale = -1;
+ absx = __scalbnl (absx, scale);
+ absy = (absy >= LDBL_MIN * 2.0L ? __scalbnl (absy, scale) : 0.0L);
+ }
+ else if (absx < LDBL_MIN && absy < LDBL_MIN)
+ {
+ scale = LDBL_MANT_DIG;
+ absx = __scalbnl (absx, scale);
+ absy = __scalbnl (absy, scale);
+ }
+
+ if (absx == 1.0L && scale == 0)
+ {
+ long double absy2 = absy * absy;
+ if (absy2 <= LDBL_MIN * 2.0L)
+ {
+ long double force_underflow = absy2 * absy2;
+ __real__ result = absy2 / 2.0L;
+ math_force_eval (force_underflow);
+ }
+ else
+ __real__ result = __log1pl (absy2) / 2.0L;
+ }
+ else if (absx > 1.0L && absx < 2.0L && absy < 1.0L && scale == 0)
+ {
+ long double d2m1 = (absx - 1.0L) * (absx + 1.0L);
+ if (absy >= LDBL_EPSILON)
+ d2m1 += absy * absy;
+ __real__ result = __log1pl (d2m1) / 2.0L;
+ }
+ else if (absx < 1.0L
+ && absx >= 0.75L
+ && absy < LDBL_EPSILON / 2.0L
+ && scale == 0)
+ {
+ long double d2m1 = (absx - 1.0L) * (absx + 1.0L);
+ __real__ result = __log1pl (d2m1) / 2.0L;
+ }
+ else if (absx < 1.0L && (absx >= 0.75L || absy >= 0.5L) && scale == 0)
+ {
+ long double d2m1 = __x2y2m1l (absx, absy);
+ __real__ result = __log1pl (d2m1) / 2.0L;
+ }
+ else
+ {
+ long double d = __ieee754_hypotl (absx, absy);
+ __real__ result = __ieee754_logl (d) - scale * M_LN2l;
+ }
+
+ __imag__ result = __ieee754_atan2l (__imag__ x, __real__ x);
+ }
+ else
+ {
+ __imag__ result = __nanl ("");
+ if (rcls == FP_INFINITE || icls == FP_INFINITE)
+ /* Real or imaginary part is infinite. */
+ __real__ result = HUGE_VALL;
+ else
+ __real__ result = __nanl ("");
+ }
+
+ return result;
+}
+weak_alias (__clogl, clogl)