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Unified Diff: gcc/mpfr/get_sj.c

Issue 3050029: [gcc] GCC 4.5.0=>4.5.1 (Closed) Base URL: ssh://git@gitrw.chromium.org:9222/nacl-toolchain.git
Patch Set: Created 10 years, 5 months ago
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Index: gcc/mpfr/get_sj.c
diff --git a/gcc/mpfr/get_sj.c b/gcc/mpfr/get_sj.c
deleted file mode 100644
index c746fc786fb5d36f3df9e68c451d9c1550feab74..0000000000000000000000000000000000000000
--- a/gcc/mpfr/get_sj.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/* mpfr_get_sj -- convert a MPFR number to a huge machine signed integer
-
-Copyright 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-Contributed by the Arenaire and Cacao projects, INRIA.
-
-This file is part of the GNU MPFR Library.
-
-The GNU MPFR 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 MPFR 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 MPFR Library; see the file COPYING.LIB. If not, write to
-the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
-MA 02110-1301, USA. */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h" /* for a build within gmp */
-#endif
-
-/* The ISO C99 standard specifies that in C++ implementations the
- INTMAX_MAX, ... macros should only be defined if explicitly requested. */
-#if defined __cplusplus
-# define __STDC_LIMIT_MACROS
-# define __STDC_CONSTANT_MACROS
-#endif
-
-#if HAVE_INTTYPES_H
-# include <inttypes.h> /* for intmax_t */
-#else
-# if HAVE_STDINT_H
-# include <stdint.h>
-# endif
-#endif
-
-#include "mpfr-impl.h"
-
-#ifdef _MPFR_H_HAVE_INTMAX_T
-
-intmax_t
-mpfr_get_sj (mpfr_srcptr f, mpfr_rnd_t rnd)
-{
- intmax_t r;
- mp_prec_t prec;
- mpfr_t x;
-
- if (!mpfr_fits_intmax_p (f, rnd))
- {
- MPFR_SET_ERANGE ();
- return MPFR_IS_NEG (f) ? INTMAX_MIN : INTMAX_MAX;
- }
- if (MPFR_IS_ZERO (f))
- return (intmax_t) 0;
-
- /* determine the precision of intmax_t */
- for (r = INTMAX_MIN, prec = 0; r != 0; r /= 2, prec++)
- {
- }
- /* Note: though INTMAX_MAX would have been sufficient for the conversion,
- we chose INTMAX_MIN so that INTMAX_MIN - 1 is always representable in
- precision prec; this is useful to detect overflows in GMP_RNDZ (will
- be needed later). */
-
- /* Now, r = 0. */
-
- mpfr_init2 (x, prec);
- mpfr_rint (x, f, rnd);
- MPFR_ASSERTN (MPFR_IS_FP (x));
-
- if (MPFR_NOTZERO (x))
- {
- mp_limb_t *xp;
- int sh, n; /* An int should be sufficient in this context. */
-
- xp = MPFR_MANT (x);
- sh = MPFR_GET_EXP (x);
- MPFR_ASSERTN ((mp_prec_t) sh <= prec);
- if (INTMAX_MIN + INTMAX_MAX != 0
- && MPFR_UNLIKELY ((mp_prec_t) sh == prec))
- {
- /* 2's complement and x <= INTMAX_MIN: in the case mp_limb_t
- has the same size as intmax_t, we cannot use the code in
- the for loop since the operations would be performed in
- unsigned arithmetic. */
- MPFR_ASSERTN (MPFR_IS_NEG (x) && (mpfr_powerof2_raw (x)));
- r = INTMAX_MIN;
- }
- else if (MPFR_IS_POS (x))
- {
- for (n = MPFR_LIMB_SIZE (x) - 1; n >= 0; n--)
- {
- sh -= BITS_PER_MP_LIMB;
- /* Note the concerning the casts below:
- When sh >= 0, the cast must be performed before the shift
- for the case sizeof(intmax_t) > sizeof(mp_limb_t).
- When sh < 0, the cast must be performed after the shift
- for the case sizeof(intmax_t) == sizeof(mp_limb_t), as
- mp_limb_t is unsigned, therefore not representable as an
- intmax_t when the MSB is 1 (this is the case here). */
- r += (sh >= 0
- ? (intmax_t) xp[n] << sh
- : (intmax_t) (xp[n] >> (-sh)));
- }
- }
- else
- {
- for (n = MPFR_LIMB_SIZE (x) - 1; n >= 0; n--)
- {
- sh -= BITS_PER_MP_LIMB;
- /* See above for the note concerning the casts. */
- r -= (sh >= 0
- ? (intmax_t) xp[n] << sh
- : (intmax_t) (xp[n] >> (-sh)));
- }
- }
- }
-
- mpfr_clear (x);
-
- return r;
-}
-
-#endif
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