51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/* Generic x86 gmp-mparam.h -- Compiler/machine parameter header file.
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Copyright 1991, 1993, 1994, 2000, 2001, 2002 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#ifndef GMP_MPARAM_H
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#define GMP_MPARAM_H
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#ifndef BITS_PER_MP_LIMB
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#define BITS_PER_MP_LIMB 64
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#elif BITS_PER_MP_LIMB != 64
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#error Bad configuration in gmp-mparam.h
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#endif
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#ifndef BYTES_PER_MP_LIMB
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#define BYTES_PER_MP_LIMB 8
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#elif BYTES_PER_MP_LIMB != 8
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#error Bad configuration in gmp-mparam.h
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#endif
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/* Generic x86 mpn_divexact_1 is faster than generic x86 mpn_divrem_1 on all
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of p5, p6, k6 and k7, so use it always. It's probably slower on 386 and
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486, but that's too bad. */
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#define DIVEXACT_1_THRESHOLD 0
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/* WARNING: SQR_KARATSUBA_THRESHOLD cannot be larger than 34 when byte
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offsets are used within the unrolled loop in sqr_basecase.asm
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*/
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#define SQR_KARATSUBA_THRESHOLD 33
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#define MUL_KARATSUBA_THRESHOLD 26
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#define MUL_TOOM3_THRESHOLD 298
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#define DIV_DC_THRESHOLD 88
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#endif
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