summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/m68k/fpu/e_pow.c')
-rw-r--r--sysdeps/m68k/fpu/e_pow.c126
1 files changed, 0 insertions, 126 deletions
diff --git a/sysdeps/m68k/fpu/e_pow.c b/sysdeps/m68k/fpu/e_pow.c
deleted file mode 100644
index 0b6cee6f15..0000000000
--- a/sysdeps/m68k/fpu/e_pow.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/* Copyright (C) 1997, 1999 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- 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 <math.h>
-#include "math_private.h"
-#include "mathimpl.h"
-
-#ifndef SUFF
-#define SUFF
-#endif
-#ifndef float_type
-#define float_type double
-#endif
-
-#define CONCATX(a,b) __CONCAT(a,b)
-#define s(name) CONCATX(name,SUFF)
-#define m81(func) __m81_u(s(func))
-
-float_type
-s(__ieee754_pow) (float_type x, float_type y)
-{
- float_type z;
- float_type ax;
- unsigned long x_cond, y_cond;
-
- y_cond = __m81_test (y);
- if (y_cond & __M81_COND_ZERO)
- return 1.0;
- if (y_cond & __M81_COND_NAN)
- return x == 1.0 ? x : x + y;
-
- x_cond = __m81_test (x);
- if (x_cond & __M81_COND_NAN)
- return x + y;
-
- if (y_cond & __M81_COND_INF)
- {
- ax = s(fabs) (x);
- if (ax == 1.0)
- return ax;
- if (ax > 1.0)
- return y_cond & __M81_COND_NEG ? 0 : y;
- else
- return y_cond & __M81_COND_NEG ? -y : 0;
- }
-
- if (s(fabs) (y) == 1.0)
- return y_cond & __M81_COND_NEG ? 1 / x : x;
-
- if (y == 2)
- return x * x;
- if (y == 0.5 && !(x_cond & __M81_COND_NEG))
- return m81(__ieee754_sqrt) (x);
-
- if (x == 10.0)
- {
- __asm ("ftentox%.x %1, %0" : "=f" (z) : "f" (y));
- return z;
- }
- if (x == 2.0)
- {
- __asm ("ftwotox%.x %1, %0" : "=f" (z) : "f" (y));
- return z;
- }
-
- ax = s(fabs) (x);
- if (x_cond & (__M81_COND_INF | __M81_COND_ZERO) || ax == 1.0)
- {
- z = ax;
- if (y_cond & __M81_COND_NEG)
- z = 1 / z;
- if (x_cond & __M81_COND_NEG)
- {
- if (y != m81(__rint) (y))
- {
- if (x == -1)
- z = (z - z) / (z - z);
- }
- else
- goto maybe_negate;
- }
- return z;
- }
-
- if (x_cond & __M81_COND_NEG)
- {
- if (y == m81(__rint) (y))
- {
- z = m81(__ieee754_exp) (y * m81(__ieee754_log) (-x));
- maybe_negate:
- /* We always use the long double format, since y is already in
- this format and rounding won't change the result. */
- {
- int32_t exponent;
- u_int32_t i0, i1;
- GET_LDOUBLE_WORDS (exponent, i0, i1, y);
- exponent = (exponent & 0x7fff) - 0x3fff;
- if (exponent <= 31
- ? i0 & (1 << (31 - exponent))
- : (exponent <= 63
- && i1 & (1 << (63 - exponent))))
- z = -z;
- }
- }
- else
- z = (y - y) / (y - y);
- }
- else
- z = m81(__ieee754_exp) (y * m81(__ieee754_log) (x));
- return z;
-}