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/* ieee754 floating point arithmetic * single and double precision * * BUGS * not much dp done * doesn't generate IEEE754_INEXACT * */ /* * MIPS floating point support * Copyright (C) 1994-2000 Algorithmics Ltd. * * 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. */ #include <linux/compiler.h> #include "ieee754.h" #include "ieee754sp.h" #include "ieee754dp.h" /* * Special constants */ /* * Older GCC requires the inner braces for initialization of union ieee754dp's * anonymous struct member. Without an error will result. */ #define xPCNST(s, b, m, ebias) \ { \ { \ .sign = (s), \ .bexp = (b) + ebias, \ .mant = (m) \ } \ } #define DPCNST(s, b, m) \ xPCNST(s, b, m, DP_EBIAS) const union ieee754dp __ieee754dp_spcvals[] = { DPCNST(0, DP_EMIN - 1, 0x0000000000000ULL), /* + zero */ DPCNST(1, DP_EMIN - 1, 0x0000000000000ULL), /* - zero */ DPCNST(0, 0, 0x0000000000000ULL), /* + 1.0 */ DPCNST(1, 0, 0x0000000000000ULL), /* - 1.0 */ DPCNST(0, 3, 0x4000000000000ULL), /* + 10.0 */ DPCNST(1, 3, 0x4000000000000ULL), /* - 10.0 */ DPCNST(0, DP_EMAX + 1, 0x0000000000000ULL), /* + infinity */ DPCNST(1, DP_EMAX + 1, 0x0000000000000ULL), /* - infinity */ DPCNST(0, DP_EMAX + 1, 0x7FFFFFFFFFFFFULL), /* + ind legacy qNaN */ DPCNST(0, DP_EMAX + 1, 0x8000000000000ULL), /* + indef 2008 qNaN */ DPCNST(0, DP_EMAX, 0xFFFFFFFFFFFFFULL), /* + max */ DPCNST(1, DP_EMAX, 0xFFFFFFFFFFFFFULL), /* - max */ DPCNST(0, DP_EMIN, 0x0000000000000ULL), /* + min normal */ DPCNST(1, DP_EMIN, 0x0000000000000ULL), /* - min normal */ DPCNST(0, DP_EMIN - 1, 0x0000000000001ULL), /* + min denormal */ DPCNST(1, DP_EMIN - 1, 0x0000000000001ULL), /* - min denormal */ DPCNST(0, 31, 0x0000000000000ULL), /* + 1.0e31 */ DPCNST(0, 63, 0x0000000000000ULL), /* + 1.0e63 */ }; #define SPCNST(s, b, m) \ xPCNST(s, b, m, SP_EBIAS) const union ieee754sp __ieee754sp_spcvals[] = { SPCNST(0, SP_EMIN - 1, 0x000000), /* + zero */ SPCNST(1, SP_EMIN - 1, 0x000000), /* - zero */ SPCNST(0, 0, 0x000000), /* + 1.0 */ SPCNST(1, 0, 0x000000), /* - 1.0 */ SPCNST(0, 3, 0x200000), /* + 10.0 */ SPCNST(1, 3, 0x200000), /* - 10.0 */ SPCNST(0, SP_EMAX + 1, 0x000000), /* + infinity */ SPCNST(1, SP_EMAX + 1, 0x000000), /* - infinity */ SPCNST(0, SP_EMAX + 1, 0x3FFFFF), /* + indef legacy quiet NaN */ SPCNST(0, SP_EMAX + 1, 0x400000), /* + indef 2008 quiet NaN */ SPCNST(0, SP_EMAX, 0x7FFFFF), /* + max normal */ SPCNST(1, SP_EMAX, 0x7FFFFF), /* - max normal */ SPCNST(0, SP_EMIN, 0x000000), /* + min normal */ SPCNST(1, SP_EMIN, 0x000000), /* - min normal */ SPCNST(0, SP_EMIN - 1, 0x000001), /* + min denormal */ SPCNST(1, SP_EMIN - 1, 0x000001), /* - min denormal */ SPCNST(0, 31, 0x000000), /* + 1.0e31 */ SPCNST(0, 63, 0x000000), /* + 1.0e63 */ }; |