diff options
Diffstat (limited to 'arch/mips/math-emu/ieee754.h')
| -rw-r--r-- | arch/mips/math-emu/ieee754.h | 507 |
1 files changed, 174 insertions, 333 deletions
diff --git a/arch/mips/math-emu/ieee754.h b/arch/mips/math-emu/ieee754.h index 22796e012060..090caa740b1e 100644 --- a/arch/mips/math-emu/ieee754.h +++ b/arch/mips/math-emu/ieee754.h @@ -1,20 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * 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., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * * Nov 7, 2000 * Modification to allow integration with Linux kernel * @@ -24,186 +12,130 @@ #ifndef __ARCH_MIPS_MATH_EMU_IEEE754_H #define __ARCH_MIPS_MATH_EMU_IEEE754_H +#include <linux/compiler.h> #include <asm/byteorder.h> +#include <linux/kernel.h> #include <linux/types.h> #include <linux/sched.h> +#include <asm/bitfield.h> -/* - * Not very pretty, but the Linux kernel's normal va_list definition - * does not allow it to be used as a structure element, as it is here. - */ -#ifndef _STDARG_H -#include <stdarg.h> -#endif - -#ifdef __LITTLE_ENDIAN -struct ieee754dp_konst { - unsigned mantlo:32; - unsigned manthi:20; - unsigned bexp:11; - unsigned sign:1; -}; -struct ieee754sp_konst { - unsigned mant:23; - unsigned bexp:8; - unsigned sign:1; -}; - -typedef union _ieee754dp { - struct ieee754dp_konst oparts; +union ieee754dp { struct { - u64 mant:52; - unsigned int bexp:11; - unsigned int sign:1; - } parts; + __BITFIELD_FIELD(unsigned int sign:1, + __BITFIELD_FIELD(unsigned int bexp:11, + __BITFIELD_FIELD(u64 mant:52, + ;))) + }; u64 bits; - double d; -} ieee754dp; - -typedef union _ieee754sp { - struct ieee754sp_konst parts; - float f; - u32 bits; -} ieee754sp; -#endif - -#ifdef __BIG_ENDIAN -struct ieee754dp_konst { - unsigned sign:1; - unsigned bexp:11; - unsigned manthi:20; - unsigned mantlo:32; }; -typedef union _ieee754dp { - struct ieee754dp_konst oparts; +union ieee754sp { struct { - unsigned int sign:1; - unsigned int bexp:11; - u64 mant:52; - } parts; - double d; - u64 bits; -} ieee754dp; - -struct ieee754sp_konst { - unsigned sign:1; - unsigned bexp:8; - unsigned mant:23; -}; - -typedef union _ieee754sp { - struct ieee754sp_konst parts; - float f; + __BITFIELD_FIELD(unsigned sign:1, + __BITFIELD_FIELD(unsigned bexp:8, + __BITFIELD_FIELD(unsigned mant:23, + ;))) + }; u32 bits; -} ieee754sp; -#endif +}; /* * single precision (often aka float) */ -int ieee754sp_finite(ieee754sp x); -int ieee754sp_class(ieee754sp x); - -ieee754sp ieee754sp_abs(ieee754sp x); -ieee754sp ieee754sp_neg(ieee754sp x); -ieee754sp ieee754sp_scalb(ieee754sp x, int); -ieee754sp ieee754sp_logb(ieee754sp x); - -/* x with sign of y */ -ieee754sp ieee754sp_copysign(ieee754sp x, ieee754sp y); - -ieee754sp ieee754sp_add(ieee754sp x, ieee754sp y); -ieee754sp ieee754sp_sub(ieee754sp x, ieee754sp y); -ieee754sp ieee754sp_mul(ieee754sp x, ieee754sp y); -ieee754sp ieee754sp_div(ieee754sp x, ieee754sp y); - -ieee754sp ieee754sp_fint(int x); -ieee754sp ieee754sp_funs(unsigned x); -ieee754sp ieee754sp_flong(s64 x); -ieee754sp ieee754sp_fulong(u64 x); -ieee754sp ieee754sp_fdp(ieee754dp x); - -int ieee754sp_tint(ieee754sp x); -unsigned int ieee754sp_tuns(ieee754sp x); -s64 ieee754sp_tlong(ieee754sp x); -u64 ieee754sp_tulong(ieee754sp x); - -int ieee754sp_cmp(ieee754sp x, ieee754sp y, int cop, int sig); -/* - * basic sp math - */ -ieee754sp ieee754sp_modf(ieee754sp x, ieee754sp * ip); -ieee754sp ieee754sp_frexp(ieee754sp x, int *exp); -ieee754sp ieee754sp_ldexp(ieee754sp x, int exp); - -ieee754sp ieee754sp_ceil(ieee754sp x); -ieee754sp ieee754sp_floor(ieee754sp x); -ieee754sp ieee754sp_trunc(ieee754sp x); - -ieee754sp ieee754sp_sqrt(ieee754sp x); +int ieee754sp_class(union ieee754sp x); + +union ieee754sp ieee754sp_abs(union ieee754sp x); +union ieee754sp ieee754sp_neg(union ieee754sp x); + +union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y); +union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y); +union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y); +union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y); + +union ieee754sp ieee754sp_fint(int x); +union ieee754sp ieee754sp_flong(s64 x); +union ieee754sp ieee754sp_fdp(union ieee754dp x); +union ieee754sp ieee754sp_rint(union ieee754sp x); + +int ieee754sp_tint(union ieee754sp x); +s64 ieee754sp_tlong(union ieee754sp x); + +int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cop, int sig); + +union ieee754sp ieee754sp_sqrt(union ieee754sp x); + +union ieee754sp ieee754sp_maddf(union ieee754sp z, union ieee754sp x, + union ieee754sp y); +union ieee754sp ieee754sp_msubf(union ieee754sp z, union ieee754sp x, + union ieee754sp y); +union ieee754sp ieee754sp_madd(union ieee754sp z, union ieee754sp x, + union ieee754sp y); +union ieee754sp ieee754sp_msub(union ieee754sp z, union ieee754sp x, + union ieee754sp y); +union ieee754sp ieee754sp_nmadd(union ieee754sp z, union ieee754sp x, + union ieee754sp y); +union ieee754sp ieee754sp_nmsub(union ieee754sp z, union ieee754sp x, + union ieee754sp y); +int ieee754sp_2008class(union ieee754sp x); +union ieee754sp ieee754sp_fmin(union ieee754sp x, union ieee754sp y); +union ieee754sp ieee754sp_fmina(union ieee754sp x, union ieee754sp y); +union ieee754sp ieee754sp_fmax(union ieee754sp x, union ieee754sp y); +union ieee754sp ieee754sp_fmaxa(union ieee754sp x, union ieee754sp y); /* * double precision (often aka double) */ -int ieee754dp_finite(ieee754dp x); -int ieee754dp_class(ieee754dp x); - -/* x with sign of y */ -ieee754dp ieee754dp_copysign(ieee754dp x, ieee754dp y); - -ieee754dp ieee754dp_add(ieee754dp x, ieee754dp y); -ieee754dp ieee754dp_sub(ieee754dp x, ieee754dp y); -ieee754dp ieee754dp_mul(ieee754dp x, ieee754dp y); -ieee754dp ieee754dp_div(ieee754dp x, ieee754dp y); - -ieee754dp ieee754dp_abs(ieee754dp x); -ieee754dp ieee754dp_neg(ieee754dp x); -ieee754dp ieee754dp_scalb(ieee754dp x, int); - -/* return exponent as integer in floating point format - */ -ieee754dp ieee754dp_logb(ieee754dp x); - -ieee754dp ieee754dp_fint(int x); -ieee754dp ieee754dp_funs(unsigned x); -ieee754dp ieee754dp_flong(s64 x); -ieee754dp ieee754dp_fulong(u64 x); -ieee754dp ieee754dp_fsp(ieee754sp x); - -ieee754dp ieee754dp_ceil(ieee754dp x); -ieee754dp ieee754dp_floor(ieee754dp x); -ieee754dp ieee754dp_trunc(ieee754dp x); - -int ieee754dp_tint(ieee754dp x); -unsigned int ieee754dp_tuns(ieee754dp x); -s64 ieee754dp_tlong(ieee754dp x); -u64 ieee754dp_tulong(ieee754dp x); - -int ieee754dp_cmp(ieee754dp x, ieee754dp y, int cop, int sig); -/* - * basic sp math - */ -ieee754dp ieee754dp_modf(ieee754dp x, ieee754dp * ip); -ieee754dp ieee754dp_frexp(ieee754dp x, int *exp); -ieee754dp ieee754dp_ldexp(ieee754dp x, int exp); - -ieee754dp ieee754dp_ceil(ieee754dp x); -ieee754dp ieee754dp_floor(ieee754dp x); -ieee754dp ieee754dp_trunc(ieee754dp x); - -ieee754dp ieee754dp_sqrt(ieee754dp x); - +int ieee754dp_class(union ieee754dp x); + +union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y); +union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y); +union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y); +union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y); + +union ieee754dp ieee754dp_abs(union ieee754dp x); +union ieee754dp ieee754dp_neg(union ieee754dp x); + +union ieee754dp ieee754dp_fint(int x); +union ieee754dp ieee754dp_flong(s64 x); +union ieee754dp ieee754dp_fsp(union ieee754sp x); +union ieee754dp ieee754dp_rint(union ieee754dp x); + +int ieee754dp_tint(union ieee754dp x); +s64 ieee754dp_tlong(union ieee754dp x); + +int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cop, int sig); + +union ieee754dp ieee754dp_sqrt(union ieee754dp x); + +union ieee754dp ieee754dp_maddf(union ieee754dp z, union ieee754dp x, + union ieee754dp y); +union ieee754dp ieee754dp_msubf(union ieee754dp z, union ieee754dp x, + union ieee754dp y); +union ieee754dp ieee754dp_madd(union ieee754dp z, union ieee754dp x, + union ieee754dp y); +union ieee754dp ieee754dp_msub(union ieee754dp z, union ieee754dp x, + union ieee754dp y); +union ieee754dp ieee754dp_nmadd(union ieee754dp z, union ieee754dp x, + union ieee754dp y); +union ieee754dp ieee754dp_nmsub(union ieee754dp z, union ieee754dp x, + union ieee754dp y); +int ieee754dp_2008class(union ieee754dp x); +union ieee754dp ieee754dp_fmin(union ieee754dp x, union ieee754dp y); +union ieee754dp ieee754dp_fmina(union ieee754dp x, union ieee754dp y); +union ieee754dp ieee754dp_fmax(union ieee754dp x, union ieee754dp y); +union ieee754dp ieee754dp_fmaxa(union ieee754dp x, union ieee754dp y); /* 5 types of floating point number */ -#define IEEE754_CLASS_NORM 0x00 -#define IEEE754_CLASS_ZERO 0x01 -#define IEEE754_CLASS_DNORM 0x02 -#define IEEE754_CLASS_INF 0x03 -#define IEEE754_CLASS_SNAN 0x04 -#define IEEE754_CLASS_QNAN 0x05 +enum { + IEEE754_CLASS_NORM = 0x00, + IEEE754_CLASS_ZERO = 0x01, + IEEE754_CLASS_DNORM = 0x02, + IEEE754_CLASS_INF = 0x03, + IEEE754_CLASS_SNAN = 0x04, + IEEE754_CLASS_QNAN = 0x05, +}; /* exception numbers */ #define IEEE754_INEXACT 0x01 @@ -219,122 +151,30 @@ ieee754dp ieee754dp_sqrt(ieee754dp x); #define IEEE754_CGT 0x04 #define IEEE754_CUN 0x08 -/* rounding mode -*/ -#define IEEE754_RN 0 /* round to nearest */ -#define IEEE754_RZ 1 /* round toward zero */ -#define IEEE754_RD 2 /* round toward -Infinity */ -#define IEEE754_RU 3 /* round toward +Infinity */ - -/* other naming */ -#define IEEE754_RM IEEE754_RD -#define IEEE754_RP IEEE754_RU - -/* "normal" comparisons -*/ -static inline int ieee754sp_eq(ieee754sp x, ieee754sp y) -{ - return ieee754sp_cmp(x, y, IEEE754_CEQ, 0); -} - -static inline int ieee754sp_ne(ieee754sp x, ieee754sp y) -{ - return ieee754sp_cmp(x, y, - IEEE754_CLT | IEEE754_CGT | IEEE754_CUN, 0); -} - -static inline int ieee754sp_lt(ieee754sp x, ieee754sp y) -{ - return ieee754sp_cmp(x, y, IEEE754_CLT, 0); -} - -static inline int ieee754sp_le(ieee754sp x, ieee754sp y) -{ - return ieee754sp_cmp(x, y, IEEE754_CLT | IEEE754_CEQ, 0); -} - -static inline int ieee754sp_gt(ieee754sp x, ieee754sp y) -{ - return ieee754sp_cmp(x, y, IEEE754_CGT, 0); -} - - -static inline int ieee754sp_ge(ieee754sp x, ieee754sp y) -{ - return ieee754sp_cmp(x, y, IEEE754_CGT | IEEE754_CEQ, 0); -} - -static inline int ieee754dp_eq(ieee754dp x, ieee754dp y) -{ - return ieee754dp_cmp(x, y, IEEE754_CEQ, 0); -} - -static inline int ieee754dp_ne(ieee754dp x, ieee754dp y) -{ - return ieee754dp_cmp(x, y, - IEEE754_CLT | IEEE754_CGT | IEEE754_CUN, 0); -} - -static inline int ieee754dp_lt(ieee754dp x, ieee754dp y) -{ - return ieee754dp_cmp(x, y, IEEE754_CLT, 0); -} - -static inline int ieee754dp_le(ieee754dp x, ieee754dp y) -{ - return ieee754dp_cmp(x, y, IEEE754_CLT | IEEE754_CEQ, 0); -} - -static inline int ieee754dp_gt(ieee754dp x, ieee754dp y) -{ - return ieee754dp_cmp(x, y, IEEE754_CGT, 0); -} - -static inline int ieee754dp_ge(ieee754dp x, ieee754dp y) -{ - return ieee754dp_cmp(x, y, IEEE754_CGT | IEEE754_CEQ, 0); -} - - -/* - * Like strtod - */ -ieee754dp ieee754dp_fstr(const char *s, char **endp); -char *ieee754dp_tstr(ieee754dp x, int prec, int fmt, int af); - - /* * The control status register */ struct _ieee754_csr { -#ifdef __BIG_ENDIAN - unsigned pad0:7; - unsigned nod:1; /* set 1 for no denormalised numbers */ - unsigned c:1; /* condition */ - unsigned pad1:5; - unsigned cx:6; /* exceptions this operation */ - unsigned mx:5; /* exception enable mask */ - unsigned sx:5; /* exceptions total */ - unsigned rm:2; /* current rounding mode */ -#endif -#ifdef __LITTLE_ENDIAN - unsigned rm:2; /* current rounding mode */ - unsigned sx:5; /* exceptions total */ - unsigned mx:5; /* exception enable mask */ - unsigned cx:6; /* exceptions this operation */ - unsigned pad1:5; - unsigned c:1; /* condition */ - unsigned nod:1; /* set 1 for no denormalised numbers */ - unsigned pad0:7; -#endif + __BITFIELD_FIELD(unsigned fcc:7, /* condition[7:1] */ + __BITFIELD_FIELD(unsigned nod:1, /* set 1 for no denormals */ + __BITFIELD_FIELD(unsigned c:1, /* condition[0] */ + __BITFIELD_FIELD(unsigned pad0:3, + __BITFIELD_FIELD(unsigned abs2008:1, /* IEEE 754-2008 ABS/NEG.fmt */ + __BITFIELD_FIELD(unsigned nan2008:1, /* IEEE 754-2008 NaN mode */ + __BITFIELD_FIELD(unsigned cx:6, /* exceptions this operation */ + __BITFIELD_FIELD(unsigned mx:5, /* exception enable mask */ + __BITFIELD_FIELD(unsigned sx:5, /* exceptions total */ + __BITFIELD_FIELD(unsigned rm:2, /* current rounding mode */ + ;)))))))))) }; #define ieee754_csr (*(struct _ieee754_csr *)(¤t->thread.fpu.fcr31)) -static inline unsigned ieee754_getrm(void) +static inline unsigned int ieee754_getrm(void) { return (ieee754_csr.rm); } -static inline unsigned ieee754_setrm(unsigned rm) + +static inline unsigned int ieee754_setrm(unsigned int rm) { return (ieee754_csr.rm = rm); } @@ -342,14 +182,14 @@ static inline unsigned ieee754_setrm(unsigned rm) /* * get current exceptions */ -static inline unsigned ieee754_getcx(void) +static inline unsigned int ieee754_getcx(void) { return (ieee754_csr.cx); } /* test for current exception condition */ -static inline int ieee754_cxtest(unsigned n) +static inline int ieee754_cxtest(unsigned int n) { return (ieee754_csr.cx & n); } @@ -357,51 +197,52 @@ static inline int ieee754_cxtest(unsigned n) /* * get sticky exceptions */ -static inline unsigned ieee754_getsx(void) +static inline unsigned int ieee754_getsx(void) { return (ieee754_csr.sx); } /* clear sticky conditions */ -static inline unsigned ieee754_clrsx(void) +static inline unsigned int ieee754_clrsx(void) { return (ieee754_csr.sx = 0); } /* test for sticky exception condition */ -static inline int ieee754_sxtest(unsigned n) +static inline int ieee754_sxtest(unsigned int n) { return (ieee754_csr.sx & n); } /* debugging */ -ieee754sp ieee754sp_dump(char *s, ieee754sp x); -ieee754dp ieee754dp_dump(char *s, ieee754dp x); - -#define IEEE754_SPCVAL_PZERO 0 -#define IEEE754_SPCVAL_NZERO 1 -#define IEEE754_SPCVAL_PONE 2 -#define IEEE754_SPCVAL_NONE 3 -#define IEEE754_SPCVAL_PTEN 4 -#define IEEE754_SPCVAL_NTEN 5 -#define IEEE754_SPCVAL_PINFINITY 6 -#define IEEE754_SPCVAL_NINFINITY 7 -#define IEEE754_SPCVAL_INDEF 8 -#define IEEE754_SPCVAL_PMAX 9 /* +max norm */ -#define IEEE754_SPCVAL_NMAX 10 /* -max norm */ -#define IEEE754_SPCVAL_PMIN 11 /* +min norm */ -#define IEEE754_SPCVAL_NMIN 12 /* +min norm */ -#define IEEE754_SPCVAL_PMIND 13 /* +min denorm */ -#define IEEE754_SPCVAL_NMIND 14 /* +min denorm */ -#define IEEE754_SPCVAL_P1E31 15 /* + 1.0e31 */ -#define IEEE754_SPCVAL_P1E63 16 /* + 1.0e63 */ - -extern const struct ieee754dp_konst __ieee754dp_spcvals[]; -extern const struct ieee754sp_konst __ieee754sp_spcvals[]; -#define ieee754dp_spcvals ((const ieee754dp *)__ieee754dp_spcvals) -#define ieee754sp_spcvals ((const ieee754sp *)__ieee754sp_spcvals) +union ieee754sp ieee754sp_dump(char *s, union ieee754sp x); +union ieee754dp ieee754dp_dump(char *s, union ieee754dp x); + +#define IEEE754_SPCVAL_PZERO 0 /* +0.0 */ +#define IEEE754_SPCVAL_NZERO 1 /* -0.0 */ +#define IEEE754_SPCVAL_PONE 2 /* +1.0 */ +#define IEEE754_SPCVAL_NONE 3 /* -1.0 */ +#define IEEE754_SPCVAL_PTEN 4 /* +10.0 */ +#define IEEE754_SPCVAL_NTEN 5 /* -10.0 */ +#define IEEE754_SPCVAL_PINFINITY 6 /* +inf */ +#define IEEE754_SPCVAL_NINFINITY 7 /* -inf */ +#define IEEE754_SPCVAL_INDEF_LEG 8 /* legacy quiet NaN */ +#define IEEE754_SPCVAL_INDEF_2008 9 /* IEEE 754-2008 quiet NaN */ +#define IEEE754_SPCVAL_PMAX 10 /* +max norm */ +#define IEEE754_SPCVAL_NMAX 11 /* -max norm */ +#define IEEE754_SPCVAL_PMIN 12 /* +min norm */ +#define IEEE754_SPCVAL_NMIN 13 /* -min norm */ +#define IEEE754_SPCVAL_PMIND 14 /* +min denorm */ +#define IEEE754_SPCVAL_NMIND 15 /* -min denorm */ +#define IEEE754_SPCVAL_P1E31 16 /* + 1.0e31 */ +#define IEEE754_SPCVAL_P1E63 17 /* + 1.0e63 */ + +extern const union ieee754dp __ieee754dp_spcvals[]; +extern const union ieee754sp __ieee754sp_spcvals[]; +#define ieee754dp_spcvals ((const union ieee754dp *)__ieee754dp_spcvals) +#define ieee754sp_spcvals ((const union ieee754sp *)__ieee754sp_spcvals) /* * Return infinity with given sign @@ -410,7 +251,8 @@ extern const struct ieee754sp_konst __ieee754sp_spcvals[]; #define ieee754dp_zero(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PZERO+(sn)]) #define ieee754dp_one(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PONE+(sn)]) #define ieee754dp_ten(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PTEN+(sn)]) -#define ieee754dp_indef() (ieee754dp_spcvals[IEEE754_SPCVAL_INDEF]) +#define ieee754dp_indef() (ieee754dp_spcvals[IEEE754_SPCVAL_INDEF_LEG + \ + ieee754_csr.nan2008]) #define ieee754dp_max(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMAX+(sn)]) #define ieee754dp_min(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIN+(sn)]) #define ieee754dp_mind(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIND+(sn)]) @@ -421,7 +263,8 @@ extern const struct ieee754sp_konst __ieee754sp_spcvals[]; #define ieee754sp_zero(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PZERO+(sn)]) #define ieee754sp_one(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PONE+(sn)]) #define ieee754sp_ten(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PTEN+(sn)]) -#define ieee754sp_indef() (ieee754sp_spcvals[IEEE754_SPCVAL_INDEF]) +#define ieee754sp_indef() (ieee754sp_spcvals[IEEE754_SPCVAL_INDEF_LEG + \ + ieee754_csr.nan2008]) #define ieee754sp_max(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMAX+(sn)]) #define ieee754sp_min(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIN+(sn)]) #define ieee754sp_mind(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIND+(sn)]) @@ -431,28 +274,28 @@ extern const struct ieee754sp_konst __ieee754sp_spcvals[]; /* * Indefinite integer value */ -#define ieee754si_indef() INT_MAX -#ifdef LONG_LONG_MAX -#define ieee754di_indef() LONG_LONG_MAX -#else -#define ieee754di_indef() ((s64)(~0ULL>>1)) -#endif - -/* IEEE exception context, passed to handler */ -struct ieee754xctx { - const char *op; /* operation name */ - int rt; /* result type */ - union { - ieee754sp sp; /* single precision */ - ieee754dp dp; /* double precision */ -#ifdef IEEE854_XP - ieee754xp xp; /* extended precision */ -#endif - int si; /* standard signed integer (32bits) */ - s64 di; /* extended signed integer (64bits) */ - } rv; /* default result format implied by op */ - va_list ap; -}; +static inline int ieee754si_indef(void) +{ + return ieee754_csr.nan2008 ? 0 : INT_MAX; +} + +static inline s64 ieee754di_indef(void) +{ + return ieee754_csr.nan2008 ? 0 : S64_MAX; +} + +/* + * Overflow integer value + */ +static inline int ieee754si_overflow(int xs) +{ + return ieee754_csr.nan2008 && xs ? INT_MIN : INT_MAX; +} + +static inline s64 ieee754di_overflow(int xs) +{ + return ieee754_csr.nan2008 && xs ? S64_MIN : S64_MAX; +} /* result types for xctx.rt */ #define IEEE754_RT_SP 0 @@ -461,8 +304,6 @@ struct ieee754xctx { #define IEEE754_RT_SI 3 #define IEEE754_RT_DI 4 -extern void ieee754_xcpt(struct ieee754xctx *xcp); - /* compat */ #define ieee754dp_fix(x) ieee754dp_tint(x) #define ieee754sp_fix(x) ieee754sp_tint(x) |