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-rw-r--r--math/s_csqrt.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/math/s_csqrt.c b/math/s_csqrt.c
deleted file mode 100644
index 04ed410a16..0000000000
--- a/math/s_csqrt.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/* Complex square root of double value.
- Copyright (C) 1997, 1998, 2005 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Based on an algorithm by Stephen L. Moshier <moshier@world.std.com>.
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <complex.h>
-#include <math.h>
-
-#include "math_private.h"
-
-
-__complex__ double
-__csqrt (__complex__ double x)
-{
- __complex__ double res;
- int rcls = fpclassify (__real__ x);
- int icls = fpclassify (__imag__ x);
-
- if (rcls <= FP_INFINITE || icls <= FP_INFINITE)
- {
- if (icls == FP_INFINITE)
- {
- __real__ res = HUGE_VAL;
- __imag__ res = __imag__ x;
- }
- else if (rcls == FP_INFINITE)
- {
- if (__real__ x < 0.0)
- {
- __real__ res = icls == FP_NAN ? __nan ("") : 0;
- __imag__ res = __copysign (HUGE_VAL, __imag__ x);
- }
- else
- {
- __real__ res = __real__ x;
- __imag__ res = (icls == FP_NAN
- ? __nan ("") : __copysign (0.0, __imag__ x));
- }
- }
- else
- {
- __real__ res = __nan ("");
- __imag__ res = __nan ("");
- }
- }
- else
- {
- if (icls == FP_ZERO)
- {
- if (__real__ x < 0.0)
- {
- __real__ res = 0.0;
- __imag__ res = __copysign (__ieee754_sqrt (-__real__ x),
- __imag__ x);
- }
- else
- {
- __real__ res = fabs (__ieee754_sqrt (__real__ x));
- __imag__ res = __copysign (0.0, __imag__ x);
- }
- }
- else if (rcls == FP_ZERO)
- {
- double r = __ieee754_sqrt (0.5 * fabs (__imag__ x));
-
- __real__ res = r;
- __imag__ res = __copysign (r, __imag__ x);
- }
- else
- {
- double d, r, s;
-
- d = __ieee754_hypot (__real__ x, __imag__ x);
- /* Use the identity 2 Re res Im res = Im x
- to avoid cancellation error in d +/- Re x. */
- if (__real__ x > 0)
- {
- r = __ieee754_sqrt (0.5 * d + 0.5 * __real__ x);
- s = (0.5 * __imag__ x) / r;
- }
- else
- {
- s = __ieee754_sqrt (0.5 * d - 0.5 * __real__ x);
- r = fabs ((0.5 * __imag__ x) / s);
- }
-
- __real__ res = r;
- __imag__ res = __copysign (s, __imag__ x);
- }
- }
-
- return res;
-}
-weak_alias (__csqrt, csqrt)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__csqrt, __csqrtl)
-weak_alias (__csqrt, csqrtl)
-#endif