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Diffstat (limited to 'rts/gmp/insert-dbl.c')
-rw-r--r-- | rts/gmp/insert-dbl.c | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/rts/gmp/insert-dbl.c b/rts/gmp/insert-dbl.c deleted file mode 100644 index dc88a56f62..0000000000 --- a/rts/gmp/insert-dbl.c +++ /dev/null @@ -1,98 +0,0 @@ -/* __gmp_insert_double -- convert from array of mp_limb_t to double. - -Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc. - -This file is part of the GNU MP Library. - -The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, write to -the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, -MA 02111-1307, USA. */ - -#include "gmp.h" -#include "gmp-impl.h" - -#ifdef XDEBUG -#undef _GMP_IEEE_FLOATS -#endif - -#ifndef _GMP_IEEE_FLOATS -#define _GMP_IEEE_FLOATS 0 -#endif - -double -#if __STDC__ -__gmp_scale2 (double d, int exp) -#else -__gmp_scale2 (d, exp) - double d; - int exp; -#endif -{ -#if _GMP_IEEE_FLOATS - { -#if defined (__alpha) && __GNUC__ == 2 && __GNUC_MINOR__ == 8 - /* Work around alpha-specific bug in GCC 2.8.x. */ - volatile -#endif - union ieee_double_extract x; - x.d = d; - exp += x.s.exp; - x.s.exp = exp; - if (exp >= 2047) - { - /* Return +-infinity */ - x.s.exp = 2047; - x.s.manl = x.s.manh = 0; - } - else if (exp < 1) - { - x.s.exp = 1; /* smallest exponent (biased) */ - /* Divide result by 2 until we have scaled it to the right IEEE - denormalized number, but stop if it becomes zero. */ - while (exp < 1 && x.d != 0) - { - x.d *= 0.5; - exp++; - } - } - return x.d; - } -#else - { - double factor, r; - - factor = 2.0; - if (exp < 0) - { - factor = 0.5; - exp = -exp; - } - r = d; - if (exp != 0) - { - if ((exp & 1) != 0) - r *= factor; - exp >>= 1; - while (exp != 0) - { - factor *= factor; - if ((exp & 1) != 0) - r *= factor; - exp >>= 1; - } - } - return r; - } -#endif -} |