diff options
Diffstat (limited to 'arch/mips/math-emu/ieee754.h')
| -rw-r--r-- | arch/mips/math-emu/ieee754.h | 175 |
1 files changed, 77 insertions, 98 deletions
diff --git a/arch/mips/math-emu/ieee754.h b/arch/mips/math-emu/ieee754.h index b8772f4..5689b0c 100644 --- a/arch/mips/math-emu/ieee754.h +++ b/arch/mips/math-emu/ieee754.h @@ -1,13 +1,8 @@ -/* single and double precision fp ops - * missing extended precision. -*/ /* * MIPS floating point support * Copyright (C) 1994-2000 Algorithmics Ltd. * http://www.algor.co.uk * - * ######################################################################## - * * 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. @@ -21,20 +16,16 @@ * 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 * * Kevin D. Kissell, kevink@mips.com and Carsten Langgard, carstenl@mips.com * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. - *************************************************************************/ + */ -#ifdef __KERNEL__ -/* Going from Algorithmics to Linux native environment, add this */ +#include <asm/byteorder.h> #include <linux/types.h> +#include <linux/sched.h> /* * Not very pretty, but the Linux kernel's normal va_list definition @@ -44,18 +35,7 @@ #include <stdarg.h> #endif -#else - -/* Note that __KERNEL__ is taken to mean Linux kernel */ - -#if #system(OpenBSD) -#include <machine/types.h> -#endif -#include <machine/endian.h> - -#endif /* __KERNEL__ */ - -#if (defined(BYTE_ORDER) && BYTE_ORDER == LITTLE_ENDIAN) || defined(__MIPSEL__) +#ifdef __LITTLE_ENDIAN struct ieee754dp_konst { unsigned mantlo:32; unsigned manthi:20; @@ -86,13 +66,14 @@ typedef union _ieee754sp { } ieee754sp; #endif -#if (defined(BYTE_ORDER) && BYTE_ORDER == BIG_ENDIAN) || defined(__MIPSEB__) +#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; struct { @@ -251,93 +232,109 @@ extern const char *const ieee754_cname[]; /* "normal" comparisons */ -static __inline int ieee754sp_eq(ieee754sp x, ieee754sp y) +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) +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) +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) +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) +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) +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) +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) +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) +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) +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) +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) +static inline int ieee754dp_ge(ieee754dp x, ieee754dp y) { return ieee754dp_cmp(x, y, IEEE754_CGT | IEEE754_CEQ, 0); } -/* like strtod -*/ +/* + * 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 { - unsigned pad:13; +/* + * The control status register + */ +struct _ieee754_csr { +#ifdef __BIG_ENDIAN + unsigned pad0:7; unsigned nod:1; /* set 1 for no denormalised numbers */ - unsigned cx:5; /* exceptions this operation */ + 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 }; -extern struct ieee754_csr ieee754_csr; +#define ieee754_csr (*(struct _ieee754_csr *)(¤t->thread.fpu.soft.fcr31)) -static __inline unsigned ieee754_getrm(void) +static inline unsigned ieee754_getrm(void) { return (ieee754_csr.rm); } -static __inline unsigned ieee754_setrm(unsigned rm) +static inline unsigned ieee754_setrm(unsigned rm) { return (ieee754_csr.rm = rm); } @@ -345,14 +342,14 @@ static __inline unsigned ieee754_setrm(unsigned rm) /* * get current exceptions */ -static __inline unsigned ieee754_getcx(void) +static inline unsigned 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 n) { return (ieee754_csr.cx & n); } @@ -360,21 +357,21 @@ static __inline int ieee754_cxtest(unsigned n) /* * get sticky exceptions */ -static __inline unsigned ieee754_getsx(void) +static inline unsigned ieee754_getsx(void) { return (ieee754_csr.sx); } /* clear sticky conditions */ -static __inline unsigned ieee754_clrsx(void) +static inline unsigned 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 n) { return (ieee754_csr.sx & n); } @@ -406,52 +403,34 @@ extern const struct ieee754sp_konst __ieee754sp_spcvals[]; #define ieee754dp_spcvals ((const ieee754dp *)__ieee754dp_spcvals) #define ieee754sp_spcvals ((const ieee754sp *)__ieee754sp_spcvals) -/* return infinity with given sign -*/ -#define ieee754dp_inf(sn) \ - (ieee754dp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)]) -#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_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)]) -#define ieee754dp_1e31() \ - (ieee754dp_spcvals[IEEE754_SPCVAL_P1E31]) -#define ieee754dp_1e63() \ - (ieee754dp_spcvals[IEEE754_SPCVAL_P1E63]) - -#define ieee754sp_inf(sn) \ - (ieee754sp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)]) -#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_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)]) -#define ieee754sp_1e31() \ - (ieee754sp_spcvals[IEEE754_SPCVAL_P1E31]) -#define ieee754sp_1e63() \ - (ieee754sp_spcvals[IEEE754_SPCVAL_P1E63]) - -/* indefinite integer value -*/ +/* + * Return infinity with given sign + */ +#define ieee754dp_inf(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)]) +#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_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)]) +#define ieee754dp_1e31() (ieee754dp_spcvals[IEEE754_SPCVAL_P1E31]) +#define ieee754dp_1e63() (ieee754dp_spcvals[IEEE754_SPCVAL_P1E63]) + +#define ieee754sp_inf(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)]) +#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_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)]) +#define ieee754sp_1e31() (ieee754sp_spcvals[IEEE754_SPCVAL_P1E31]) +#define ieee754sp_1e63() (ieee754sp_spcvals[IEEE754_SPCVAL_P1E63]) + +/* + * Indefinite integer value + */ #define ieee754si_indef() INT_MAX #ifdef LONG_LONG_MAX #define ieee754di_indef() LONG_LONG_MAX |
