[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_catanhf.c b/ap/libc/glibc/glibc-2.22/math/s_catanhf.c
new file mode 100644
index 0000000..ea606c5
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/math/s_catanhf.c
@@ -0,0 +1,146 @@
+/* Return arc hyperbole tangent for float value.
+ 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>
+
+__complex__ float
+__catanhf (__complex__ float x)
+{
+ __complex__ float res;
+ int rcls = fpclassify (__real__ x);
+ int icls = fpclassify (__imag__ x);
+
+ if (__glibc_unlikely (rcls <= FP_INFINITE || icls <= FP_INFINITE))
+ {
+ if (icls == FP_INFINITE)
+ {
+ __real__ res = __copysignf (0.0, __real__ x);
+ __imag__ res = __copysignf (M_PI_2, __imag__ x);
+ }
+ else if (rcls == FP_INFINITE || rcls == FP_ZERO)
+ {
+ __real__ res = __copysignf (0.0, __real__ x);
+ if (icls >= FP_ZERO)
+ __imag__ res = __copysignf (M_PI_2, __imag__ x);
+ else
+ __imag__ res = __nanf ("");
+ }
+ else
+ {
+ __real__ res = __nanf ("");
+ __imag__ res = __nanf ("");
+ }
+ }
+ else if (__glibc_unlikely (rcls == FP_ZERO && icls == FP_ZERO))
+ {
+ res = x;
+ }
+ else
+ {
+ if (fabsf (__real__ x) >= 16.0f / FLT_EPSILON
+ || fabsf (__imag__ x) >= 16.0f / FLT_EPSILON)
+ {
+ __imag__ res = __copysignf ((float) M_PI_2, __imag__ x);
+ if (fabsf (__imag__ x) <= 1.0f)
+ __real__ res = 1.0f / __real__ x;
+ else if (fabsf (__real__ x) <= 1.0f)
+ __real__ res = __real__ x / __imag__ x / __imag__ x;
+ else
+ {
+ float h = __ieee754_hypotf (__real__ x / 2.0f,
+ __imag__ x / 2.0f);
+ __real__ res = __real__ x / h / h / 4.0f;
+ }
+ }
+ else
+ {
+ if (fabsf (__real__ x) == 1.0f
+ && fabsf (__imag__ x) < FLT_EPSILON * FLT_EPSILON)
+ __real__ res = (__copysignf (0.5f, __real__ x)
+ * ((float) M_LN2
+ - __ieee754_logf (fabsf (__imag__ x))));
+ else
+ {
+ float i2 = 0.0f;
+ if (fabsf (__imag__ x) >= FLT_EPSILON * FLT_EPSILON)
+ i2 = __imag__ x * __imag__ x;
+
+ float num = 1.0f + __real__ x;
+ num = i2 + num * num;
+
+ float den = 1.0f - __real__ x;
+ den = i2 + den * den;
+
+ float f = num / den;
+ if (f < 0.5f)
+ __real__ res = 0.25f * __ieee754_logf (f);
+ else
+ {
+ num = 4.0f * __real__ x;
+ __real__ res = 0.25f * __log1pf (num / den);
+ }
+ }
+
+ float absx, absy, den;
+
+ absx = fabsf (__real__ x);
+ absy = fabsf (__imag__ x);
+ if (absx < absy)
+ {
+ float t = absx;
+ absx = absy;
+ absy = t;
+ }
+
+ if (absy < FLT_EPSILON / 2.0f)
+ {
+ den = (1.0f - absx) * (1.0f + absx);
+ if (den == -0.0f)
+ den = 0.0f;
+ }
+ else if (absx >= 1.0f)
+ den = (1.0f - absx) * (1.0f + absx) - absy * absy;
+ else if (absx >= 0.75f || absy >= 0.5f)
+ den = -__x2y2m1f (absx, absy);
+ else
+ den = (1.0f - absx) * (1.0f + absx) - absy * absy;
+
+ __imag__ res = 0.5f * __ieee754_atan2f (2.0f * __imag__ x, den);
+ }
+
+ if (fabsf (__real__ res) < FLT_MIN)
+ {
+ volatile float force_underflow = __real__ res * __real__ res;
+ (void) force_underflow;
+ }
+ if (fabsf (__imag__ res) < FLT_MIN)
+ {
+ volatile float force_underflow = __imag__ res * __imag__ res;
+ (void) force_underflow;
+ }
+ }
+
+ return res;
+}
+#ifndef __catanhf
+weak_alias (__catanhf, catanhf)
+#endif