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Based on 1 normalized pattern(s): this program is free software you can distribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 33 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081038.563233189@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* ieee754 floating point arithmetic
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* single and double precision
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*
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* BUGS
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* not much dp done
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* doesn't generate IEEE754_INEXACT
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*/
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/*
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* MIPS floating point support
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* Copyright (C) 1994-2000 Algorithmics Ltd.
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*/
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#include <linux/compiler.h>
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#include "ieee754.h"
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#include "ieee754sp.h"
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#include "ieee754dp.h"
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/*
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* Special constants
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*/
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/*
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* Older GCC requires the inner braces for initialization of union ieee754dp's
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* anonymous struct member. Without an error will result.
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*/
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#define xPCNST(s, b, m, ebias) \
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{ \
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{ \
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.sign = (s), \
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.bexp = (b) + ebias, \
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.mant = (m) \
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} \
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}
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#define DPCNST(s, b, m) \
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xPCNST(s, b, m, DP_EBIAS)
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const union ieee754dp __ieee754dp_spcvals[] = {
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DPCNST(0, DP_EMIN - 1, 0x0000000000000ULL), /* + zero */
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DPCNST(1, DP_EMIN - 1, 0x0000000000000ULL), /* - zero */
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DPCNST(0, 0, 0x0000000000000ULL), /* + 1.0 */
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DPCNST(1, 0, 0x0000000000000ULL), /* - 1.0 */
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DPCNST(0, 3, 0x4000000000000ULL), /* + 10.0 */
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DPCNST(1, 3, 0x4000000000000ULL), /* - 10.0 */
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DPCNST(0, DP_EMAX + 1, 0x0000000000000ULL), /* + infinity */
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DPCNST(1, DP_EMAX + 1, 0x0000000000000ULL), /* - infinity */
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DPCNST(0, DP_EMAX + 1, 0x7FFFFFFFFFFFFULL), /* + ind legacy qNaN */
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DPCNST(0, DP_EMAX + 1, 0x8000000000000ULL), /* + indef 2008 qNaN */
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DPCNST(0, DP_EMAX, 0xFFFFFFFFFFFFFULL), /* + max */
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DPCNST(1, DP_EMAX, 0xFFFFFFFFFFFFFULL), /* - max */
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DPCNST(0, DP_EMIN, 0x0000000000000ULL), /* + min normal */
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DPCNST(1, DP_EMIN, 0x0000000000000ULL), /* - min normal */
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DPCNST(0, DP_EMIN - 1, 0x0000000000001ULL), /* + min denormal */
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DPCNST(1, DP_EMIN - 1, 0x0000000000001ULL), /* - min denormal */
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DPCNST(0, 31, 0x0000000000000ULL), /* + 1.0e31 */
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DPCNST(0, 63, 0x0000000000000ULL), /* + 1.0e63 */
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};
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#define SPCNST(s, b, m) \
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xPCNST(s, b, m, SP_EBIAS)
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const union ieee754sp __ieee754sp_spcvals[] = {
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SPCNST(0, SP_EMIN - 1, 0x000000), /* + zero */
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SPCNST(1, SP_EMIN - 1, 0x000000), /* - zero */
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SPCNST(0, 0, 0x000000), /* + 1.0 */
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SPCNST(1, 0, 0x000000), /* - 1.0 */
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SPCNST(0, 3, 0x200000), /* + 10.0 */
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SPCNST(1, 3, 0x200000), /* - 10.0 */
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SPCNST(0, SP_EMAX + 1, 0x000000), /* + infinity */
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SPCNST(1, SP_EMAX + 1, 0x000000), /* - infinity */
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SPCNST(0, SP_EMAX + 1, 0x3FFFFF), /* + indef legacy quiet NaN */
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SPCNST(0, SP_EMAX + 1, 0x400000), /* + indef 2008 quiet NaN */
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SPCNST(0, SP_EMAX, 0x7FFFFF), /* + max normal */
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SPCNST(1, SP_EMAX, 0x7FFFFF), /* - max normal */
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SPCNST(0, SP_EMIN, 0x000000), /* + min normal */
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SPCNST(1, SP_EMIN, 0x000000), /* - min normal */
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SPCNST(0, SP_EMIN - 1, 0x000001), /* + min denormal */
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SPCNST(1, SP_EMIN - 1, 0x000001), /* - min denormal */
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SPCNST(0, 31, 0x000000), /* + 1.0e31 */
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SPCNST(0, 63, 0x000000), /* + 1.0e63 */
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};
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