Skip to content

L
linux
Commit cd21dfcf authored by Ralf Baechle's avatar Ralf Baechle
Browse files
Options

Fix preemption and SMP problems in the FP emulator code. 

Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 63b2d2f4
Hide whitespace changes
Inline Side-by-side
Showing with 122 additions and 119 deletions
arch/mips/kernel/traps.c
View file @ cd21dfcf
...@@ -551,6 +551,14 @@ asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31) ...@@ -551,6 +551,14 @@ asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
preempt_disable(); preempt_disable();
#ifdef CONFIG_PREEMPT
if (!is_fpu_owner()) {
/* We might lose fpu before disabling preempt... */
own_fpu();
BUG_ON(!used_math());
restore_fp(current);
}
#endif
/* /*
* Unimplemented operation exception. If we've got the full * Unimplemented operation exception. If we've got the full
* software emulator on-board, let's use it... * software emulator on-board, let's use it...
...@@ -562,11 +570,18 @@ asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31) ...@@ -562,11 +570,18 @@ asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
* a bit extreme for what should be an infrequent event. * a bit extreme for what should be an infrequent event.
*/ */
save_fp(current); save_fp(current);
/* Ensure 'resume' not overwrite saved fp context again. */
lose_fpu();
preempt_enable();
/* Run the emulator */ /* Run the emulator */
sig = fpu_emulator_cop1Handler (0, regs, sig = fpu_emulator_cop1Handler (0, regs,
&current->thread.fpu.soft); &current->thread.fpu.soft);
preempt_disable();
own_fpu(); /* Using the FPU again. */
/* /*
* We can't allow the emulated instruction to leave any of * We can't allow the emulated instruction to leave any of
* the cause bit set in $fcr31. * the cause bit set in $fcr31.
...@@ -712,6 +727,8 @@ asmlinkage void do_cpu(struct pt_regs *regs) ...@@ -712,6 +727,8 @@ asmlinkage void do_cpu(struct pt_regs *regs)
set_used_math(); set_used_math();
} }
preempt_enable();
if (!cpu_has_fpu) { if (!cpu_has_fpu) {
int sig = fpu_emulator_cop1Handler(0, regs, int sig = fpu_emulator_cop1Handler(0, regs,
&current->thread.fpu.soft); &current->thread.fpu.soft);
...@@ -719,8 +736,6 @@ asmlinkage void do_cpu(struct pt_regs *regs) ...@@ -719,8 +736,6 @@ asmlinkage void do_cpu(struct pt_regs *regs)
force_sig(sig, current); force_sig(sig, current);
} }
preempt_enable();
return; return;
case 2: case 2:
......
arch/mips/math-emu/cp1emu.c
View file @ cd21dfcf
...@@ -79,7 +79,17 @@ struct mips_fpu_emulator_private fpuemuprivate; ...@@ -79,7 +79,17 @@ struct mips_fpu_emulator_private fpuemuprivate;
/* Convert Mips rounding mode (0..3) to IEEE library modes. */ /* Convert Mips rounding mode (0..3) to IEEE library modes. */
static const unsigned char ieee_rm[4] = { static const unsigned char ieee_rm[4] = {
IEEE754_RN, IEEE754_RZ, IEEE754_RU, IEEE754_RD [FPU_CSR_RN] = IEEE754_RN,
[FPU_CSR_RZ] = IEEE754_RZ,
[FPU_CSR_RU] = IEEE754_RU,
[FPU_CSR_RD] = IEEE754_RD,
};
/* Convert IEEE library modes to Mips rounding mode (0..3). */
static const unsigned char mips_rm[4] = {
[IEEE754_RN] = FPU_CSR_RN,
[IEEE754_RZ] = FPU_CSR_RZ,
[IEEE754_RD] = FPU_CSR_RD,
[IEEE754_RU] = FPU_CSR_RU,
}; };
#if __mips >= 4 #if __mips >= 4
...@@ -368,6 +378,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) ...@@ -368,6 +378,7 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx)
} }
if (MIPSInst_RD(ir) == FPCREG_CSR) { if (MIPSInst_RD(ir) == FPCREG_CSR) {
value = ctx->fcr31; value = ctx->fcr31;
value = (value & ~0x3) | mips_rm[value & 0x3];
#ifdef CSRTRACE #ifdef CSRTRACE
printk("%p gpr[%d]<-csr=%08x\n", printk("%p gpr[%d]<-csr=%08x\n",
(void *) (xcp->cp0_epc), (void *) (xcp->cp0_epc),
...@@ -400,11 +411,10 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx) ...@@ -400,11 +411,10 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx)
(void *) (xcp->cp0_epc), (void *) (xcp->cp0_epc),
MIPSInst_RT(ir), value); MIPSInst_RT(ir), value);
#endif #endif
ctx->fcr31 = value; value &= (FPU_CSR_FLUSH | FPU_CSR_ALL_E | FPU_CSR_ALL_S | 0x03);
/* copy new rounding mode and ctx->fcr31 &= ~(FPU_CSR_FLUSH | FPU_CSR_ALL_E | FPU_CSR_ALL_S | 0x03);
flush bit to ieee library state! */ /* convert to ieee library modes */
ieee754_csr.nod = (ctx->fcr31 & 0x1000000) != 0; ctx->fcr31 |= (value & ~0x3) | ieee_rm[value & 0x3];
ieee754_csr.rm = ieee_rm[value & 0x3];
} }
if ((ctx->fcr31 >> 5) & ctx->fcr31 & FPU_CSR_ALL_E) { if ((ctx->fcr31 >> 5) & ctx->fcr31 & FPU_CSR_ALL_E) {
return SIGFPE; return SIGFPE;
...@@ -570,7 +580,7 @@ static const unsigned char cmptab[8] = { ...@@ -570,7 +580,7 @@ static const unsigned char cmptab[8] = {
static ieee754##p fpemu_##p##_##name (ieee754##p r, ieee754##p s, \ static ieee754##p fpemu_##p##_##name (ieee754##p r, ieee754##p s, \
ieee754##p t) \ ieee754##p t) \
{ \ { \
struct ieee754_csr ieee754_csr_save; \ struct _ieee754_csr ieee754_csr_save; \
s = f1 (s, t); \ s = f1 (s, t); \
ieee754_csr_save = ieee754_csr; \ ieee754_csr_save = ieee754_csr; \
s = f2 (s, r); \ s = f2 (s, r); \
...@@ -699,8 +709,6 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx, ...@@ -699,8 +709,6 @@ static int fpux_emu(struct pt_regs *xcp, struct mips_fpu_soft_struct *ctx,
rcsr |= FPU_CSR_INV_X | FPU_CSR_INV_S; rcsr |= FPU_CSR_INV_X | FPU_CSR_INV_S;
ctx->fcr31 = (ctx->fcr31 & ~FPU_CSR_ALL_X) | rcsr; ctx->fcr31 = (ctx->fcr31 & ~FPU_CSR_ALL_X) | rcsr;
if (ieee754_csr.nod)
ctx->fcr31 |= 0x1000000;
if ((ctx->fcr31 >> 5) & ctx->fcr31 & FPU_CSR_ALL_E) { if ((ctx->fcr31 >> 5) & ctx->fcr31 & FPU_CSR_ALL_E) {
/*printk ("SIGFPE: fpu csr = %08x\n", /*printk ("SIGFPE: fpu csr = %08x\n",
ctx->fcr31); */ ctx->fcr31); */
...@@ -1297,12 +1305,17 @@ int fpu_emulator_cop1Handler(int xcptno, struct pt_regs *xcp, ...@@ -1297,12 +1305,17 @@ int fpu_emulator_cop1Handler(int xcptno, struct pt_regs *xcp,
if (insn == 0) if (insn == 0)
xcp->cp0_epc += 4; /* skip nops */ xcp->cp0_epc += 4; /* skip nops */
else { else {
/* Update ieee754_csr. Only relevant if we have a /*
h/w FPU */ * The 'ieee754_csr' is an alias of
ieee754_csr.nod = (ctx->fcr31 & 0x1000000) != 0; * ctx->fcr31. No need to copy ctx->fcr31 to
ieee754_csr.rm = ieee_rm[ctx->fcr31 & 0x3]; * ieee754_csr. But ieee754_csr.rm is ieee
ieee754_csr.cx = (ctx->fcr31 >> 12) & 0x1f; * library modes. (not mips rounding mode)
*/
/* convert to ieee library modes */
ieee754_csr.rm = ieee_rm[ieee754_csr.rm];
sig = cop1Emulate(xcp, ctx); sig = cop1Emulate(xcp, ctx);
/* revert to mips rounding mode */
ieee754_csr.rm = mips_rm[ieee754_csr.rm];
} }
if (cpu_has_fpu) if (cpu_has_fpu)
......
arch/mips/math-emu/dp_sqrt.c
View file @ cd21dfcf
...@@ -37,7 +37,7 @@ static const unsigned table[] = { ...@@ -37,7 +37,7 @@ static const unsigned table[] = {
ieee754dp ieee754dp_sqrt(ieee754dp x) ieee754dp ieee754dp_sqrt(ieee754dp x)
{ {
struct ieee754_csr oldcsr; struct _ieee754_csr oldcsr;
ieee754dp y, z, t; ieee754dp y, z, t;
unsigned scalx, yh; unsigned scalx, yh;
COMPXDP; COMPXDP;
......
arch/mips/math-emu/ieee754.c
View file @ cd21dfcf
...@@ -50,10 +50,6 @@ const char *const ieee754_cname[] = { ...@@ -50,10 +50,6 @@ const char *const ieee754_cname[] = {
"SNaN", "SNaN",
}; };
/* the control status register
*/
struct ieee754_csr ieee754_csr;
/* special constants /* special constants
*/ */
......
arch/mips/math-emu/ieee754.h
View file @ cd21dfcf
/* single and double precision fp ops
* missing extended precision.
*/
/* /*
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* http://www.algor.co.uk * http://www.algor.co.uk
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * 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 * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -21,20 +16,16 @@ ...@@ -21,20 +16,16 @@
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
* *
* ########################################################################
*/
/**************************************************************************
* Nov 7, 2000 * Nov 7, 2000
* Modification to allow integration with Linux kernel * Modification to allow integration with Linux kernel
* *
* Kevin D. Kissell, kevink@mips.com and Carsten Langgard, carstenl@mips.com * Kevin D. Kissell, kevink@mips.com and Carsten Langgard, carstenl@mips.com
* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
*************************************************************************/ */
#ifdef __KERNEL__ #include <asm/byteorder.h>
/* Going from Algorithmics to Linux native environment, add this */
#include <linux/types.h> #include <linux/types.h>
#include <linux/sched.h>
/* /*
* Not very pretty, but the Linux kernel's normal va_list definition * Not very pretty, but the Linux kernel's normal va_list definition
...@@ -44,18 +35,7 @@ ...@@ -44,18 +35,7 @@
#include <stdarg.h> #include <stdarg.h>
#endif #endif
#else #ifdef __LITTLE_ENDIAN
/* 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__)
struct ieee754dp_konst { struct ieee754dp_konst {
unsigned mantlo:32; unsigned mantlo:32;
unsigned manthi:20; unsigned manthi:20;
...@@ -86,13 +66,14 @@ typedef union _ieee754sp { ...@@ -86,13 +66,14 @@ typedef union _ieee754sp {
} ieee754sp; } ieee754sp;
#endif #endif
#if (defined(BYTE_ORDER) && BYTE_ORDER == BIG_ENDIAN) || defined(__MIPSEB__) #ifdef __BIG_ENDIAN
struct ieee754dp_konst { struct ieee754dp_konst {
unsigned sign:1; unsigned sign:1;
unsigned bexp:11; unsigned bexp:11;
unsigned manthi:20; unsigned manthi:20;
unsigned mantlo:32; unsigned mantlo:32;
}; };
typedef union _ieee754dp { typedef union _ieee754dp {
struct ieee754dp_konst oparts; struct ieee754dp_konst oparts;
struct { struct {
...@@ -251,93 +232,109 @@ extern const char *const ieee754_cname[]; ...@@ -251,93 +232,109 @@ extern const char *const ieee754_cname[];
/* "normal" comparisons /* "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); 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, return ieee754sp_cmp(x, y,
IEEE754_CLT | IEEE754_CGT | IEEE754_CUN, 0); 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); 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); 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); 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); 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); 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, return ieee754dp_cmp(x, y,
IEEE754_CLT | IEEE754_CGT | IEEE754_CUN, 0); 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); 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); 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); 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); return ieee754dp_cmp(x, y, IEEE754_CGT | IEEE754_CEQ, 0);
} }
/* like strtod /*
*/ * Like strtod
*/
ieee754dp ieee754dp_fstr(const char *s, char **endp); ieee754dp ieee754dp_fstr(const char *s, char **endp);
char *ieee754dp_tstr(ieee754dp x, int prec, int fmt, int af); char *ieee754dp_tstr(ieee754dp x, int prec, int fmt, int af);
/* the control status register /*
*/ * The control status register
struct ieee754_csr { */
unsigned pad:13; struct _ieee754_csr {
#ifdef __BIG_ENDIAN
unsigned pad0:7;
unsigned nod:1; /* set 1 for no denormalised numbers */ 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 mx:5; /* exception enable mask */
unsigned sx:5; /* exceptions total */ unsigned sx:5; /* exceptions total */
unsigned rm:2; /* current rounding mode */ 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 *)(&current->thread.fpu.soft.fcr31))
static __inline unsigned ieee754_getrm(void) static inline unsigned ieee754_getrm(void)
{ {
return (ieee754_csr.rm); return (ieee754_csr.rm);
} }
static __inline unsigned ieee754_setrm(unsigned rm) static inline unsigned ieee754_setrm(unsigned rm)
{ {
return (ieee754_csr.rm = rm); return (ieee754_csr.rm = rm);
} }
...@@ -345,14 +342,14 @@ static __inline unsigned ieee754_setrm(unsigned rm) ...@@ -345,14 +342,14 @@ static __inline unsigned ieee754_setrm(unsigned rm)
/* /*
* get current exceptions * get current exceptions
*/ */
static __inline unsigned ieee754_getcx(void) static inline unsigned ieee754_getcx(void)
{ {
return (ieee754_csr.cx); return (ieee754_csr.cx);
} }
/* test for current exception condition /* test for current exception condition
*/ */
static __inline int ieee754_cxtest(unsigned n) static inline int ieee754_cxtest(unsigned n)
{ {
return (ieee754_csr.cx & n); return (ieee754_csr.cx & n);
} }
...@@ -360,21 +357,21 @@ static __inline int ieee754_cxtest(unsigned n) ...@@ -360,21 +357,21 @@ static __inline int ieee754_cxtest(unsigned n)
/* /*
* get sticky exceptions * get sticky exceptions
*/ */
static __inline unsigned ieee754_getsx(void) static inline unsigned ieee754_getsx(void)
{ {
return (ieee754_csr.sx); return (ieee754_csr.sx);
} }
/* clear sticky conditions /* clear sticky conditions
*/ */
static __inline unsigned ieee754_clrsx(void) static inline unsigned ieee754_clrsx(void)
{ {
return (ieee754_csr.sx = 0); return (ieee754_csr.sx = 0);
} }
/* test for sticky exception condition /* test for sticky exception condition
*/ */
static __inline int ieee754_sxtest(unsigned n) static inline int ieee754_sxtest(unsigned n)
{ {
return (ieee754_csr.sx & n); return (ieee754_csr.sx & n);
} }
...@@ -406,52 +403,34 @@ extern const struct ieee754sp_konst __ieee754sp_spcvals[]; ...@@ -406,52 +403,34 @@ extern const struct ieee754sp_konst __ieee754sp_spcvals[];
#define ieee754dp_spcvals ((const ieee754dp *)__ieee754dp_spcvals) #define ieee754dp_spcvals ((const ieee754dp *)__ieee754dp_spcvals)
#define ieee754sp_spcvals ((const ieee754sp *)__ieee754sp_spcvals) #define ieee754sp_spcvals ((const ieee754sp *)__ieee754sp_spcvals)
/* return infinity with given sign /*
*/ * Return infinity with given sign
#define ieee754dp_inf(sn) \ */
(ieee754dp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)]) #define ieee754dp_inf(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)])
#define ieee754dp_zero(sn) \ #define ieee754dp_zero(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PZERO+(sn)])
(ieee754dp_spcvals[IEEE754_SPCVAL_PZERO+(sn)]) #define ieee754dp_one(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PONE+(sn)])
#define ieee754dp_one(sn) \ #define ieee754dp_ten(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PTEN+(sn)])
(ieee754dp_spcvals[IEEE754_SPCVAL_PONE+(sn)]) #define ieee754dp_indef() (ieee754dp_spcvals[IEEE754_SPCVAL_INDEF])
#define ieee754dp_ten(sn) \ #define ieee754dp_max(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMAX+(sn)])
(ieee754dp_spcvals[IEEE754_SPCVAL_PTEN+(sn)]) #define ieee754dp_min(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIN+(sn)])
#define ieee754dp_indef() \ #define ieee754dp_mind(sn) (ieee754dp_spcvals[IEEE754_SPCVAL_PMIND+(sn)])
(ieee754dp_spcvals[IEEE754_SPCVAL_INDEF]) #define ieee754dp_1e31() (ieee754dp_spcvals[IEEE754_SPCVAL_P1E31])
#define ieee754dp_max(sn) \ #define ieee754dp_1e63() (ieee754dp_spcvals[IEEE754_SPCVAL_P1E63])
(ieee754dp_spcvals[IEEE754_SPCVAL_PMAX+(sn)])
#define ieee754dp_min(sn) \ #define ieee754sp_inf(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)])
(ieee754dp_spcvals[IEEE754_SPCVAL_PMIN+(sn)]) #define ieee754sp_zero(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PZERO+(sn)])
#define ieee754dp_mind(sn) \ #define ieee754sp_one(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PONE+(sn)])
(ieee754dp_spcvals[IEEE754_SPCVAL_PMIND+(sn)]) #define ieee754sp_ten(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PTEN+(sn)])
#define ieee754dp_1e31() \ #define ieee754sp_indef() (ieee754sp_spcvals[IEEE754_SPCVAL_INDEF])
(ieee754dp_spcvals[IEEE754_SPCVAL_P1E31]) #define ieee754sp_max(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMAX+(sn)])
#define ieee754dp_1e63() \ #define ieee754sp_min(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIN+(sn)])
(ieee754dp_spcvals[IEEE754_SPCVAL_P1E63]) #define ieee754sp_mind(sn) (ieee754sp_spcvals[IEEE754_SPCVAL_PMIND+(sn)])
#define ieee754sp_1e31() (ieee754sp_spcvals[IEEE754_SPCVAL_P1E31])
#define ieee754sp_inf(sn) \ #define ieee754sp_1e63() (ieee754sp_spcvals[IEEE754_SPCVAL_P1E63])
(ieee754sp_spcvals[IEEE754_SPCVAL_PINFINITY+(sn)])
#define ieee754sp_zero(sn) \ /*
(ieee754sp_spcvals[IEEE754_SPCVAL_PZERO+(sn)]) * Indefinite integer value
#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 #define ieee754si_indef() INT_MAX
#ifdef LONG_LONG_MAX #ifdef LONG_LONG_MAX
#define ieee754di_indef() LONG_LONG_MAX #define ieee754di_indef() LONG_LONG_MAX
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7