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* libc/include/math.h (INFINITY, NAN, FP_ILOGB0, FP_ILOGBNAN) 

(MATH_ERRNO, MATH_ERREXCEPT, math_errhandling): Add macros
	required by POSIX.
	* libc/stdlib/ldtoa.c (USE_INFINITY): Rename from INFINITY, to
	avoid clash with <math.h>.
This commit is contained in:
Eric Blake 2007-05-16 19:59:40 +00:00
parent f65607751c
commit 895d76fed6
3 changed files with 74 additions and 49 deletions
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6
newlib/ChangeLog
View File

@ -1,5 +1,11 @@
2007-05-16 Eric Blake <ebb9@byu.net> 2007-05-16 Eric Blake <ebb9@byu.net>
* libc/include/math.h (INFINITY, NAN, FP_ILOGB0, FP_ILOGBNAN)
(MATH_ERRNO, MATH_ERREXCEPT, math_errhandling): Add macros
required by POSIX.
* libc/stdlib/ldtoa.c (USE_INFINITY): Rename from INFINITY, to
avoid clash with <math.h>.
* libc/stdlib/wctomb_r.c (_wctomb_r): Avoid gcc warnings on cygwin. * libc/stdlib/wctomb_r.c (_wctomb_r): Avoid gcc warnings on cygwin.
* libc/search/hash.c (__hash_open): Likewise. * libc/search/hash.c (__hash_open): Likewise.

60
newlib/libc/include/math.h
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@ -1,4 +1,3 @@
#ifndef _MATH_H_ #ifndef _MATH_H_
#define _MATH_H_ #define _MATH_H_
@ -13,13 +12,13 @@ union __dmath
__ULong i[2]; __ULong i[2];
double d; double d;
}; };
union __fmath union __fmath
{ {
__ULong i[1]; __ULong i[1];
float f; float f;
}; };
union __ldmath union __ldmath
{ {
__ULong i[4]; __ULong i[4];
@ -32,23 +31,31 @@ union __ldmath
/* gcc >= 3.3 implicitly defines builtins for HUGE_VALx values. */ /* gcc >= 3.3 implicitly defines builtins for HUGE_VALx values. */
#ifndef HUGE_VAL # ifndef HUGE_VAL
#define HUGE_VAL (__builtin_huge_val()) # define HUGE_VAL (__builtin_huge_val())
#endif # endif
#ifndef HUGE_VALF # ifndef HUGE_VALF
#define HUGE_VALF (__builtin_huge_valf()) # define HUGE_VALF (__builtin_huge_valf())
#endif # endif
#ifndef HUGE_VALL # ifndef HUGE_VALL
#define HUGE_VALL (__builtin_huge_vall()) # define HUGE_VALL (__builtin_huge_vall())
#endif # endif
# ifndef INFINITY
# define INFINITY (__builtin_inff())
# endif
# ifndef NAN
# define NAN (__builtin_nanf(""))
# endif
#else /* !gcc >= 3.3 */ #else /* !gcc >= 3.3 */
/* No builtins. Use floating-point unions instead. Declare as an array /* No builtins. Use floating-point unions instead. Declare as an array
without bounds so no matter what small data support a port and/or without bounds so no matter what small data support a port and/or
library has, the reference will be via the general method for accessing library has, the reference will be via the general method for accessing
globals. */ globals. */
#ifndef HUGE_VAL #ifndef HUGE_VAL
@ -118,6 +125,23 @@ typedef double double_t;
#define FP_SUBNORMAL 3 #define FP_SUBNORMAL 3
#define FP_NORMAL 4 #define FP_NORMAL 4
#ifndef FP_ILOGB0
# define FP_ILOGB0 (-INT_MAX)
#endif
#ifndef FP_ILOGBNAN
# define FP_ILOGBNAN INT_MAX
#endif
#ifndef MATH_ERRNO
# define MATH_ERRNO 1
#endif
#ifndef MATH_ERREXCEPT
# define MATH_ERREXCEPT 2
#endif
#ifndef math_errhandling
# define math_errhandling MATH_ERRNO
#endif
extern int __isinff (float x); extern int __isinff (float x);
extern int __isinfd (double x); extern int __isinfd (double x);
extern int __isnanf (float x); extern int __isnanf (float x);
@ -347,9 +371,9 @@ extern int *__signgam _PARAMS((void));
/* We have a problem when using C++ since `exception' is a reserved /* We have a problem when using C++ since `exception' is a reserved
name in C++. */ name in C++. */
#ifdef __cplusplus #ifdef __cplusplus
struct __exception struct __exception
#else #else
struct exception struct exception
#endif #endif
{ {
int type; int type;
@ -397,7 +421,7 @@ extern int matherr _PARAMS((struct exception *e));
#define M_SQRT1_2 0.70710678118654752440 #define M_SQRT1_2 0.70710678118654752440
#define M_LN2LO 1.9082149292705877000E-10 #define M_LN2LO 1.9082149292705877000E-10
#define M_LN2HI 6.9314718036912381649E-1 #define M_LN2HI 6.9314718036912381649E-1
#define M_SQRT3 1.73205080756887719000 #define M_SQRT3 1.73205080756887719000
#define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */ #define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */
#define M_LOG2_E 0.693147180559945309417 #define M_LOG2_E 0.693147180559945309417
#define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */ #define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */

57
newlib/libc/stdlib/ldtoa.c
View File

@ -1,4 +1,3 @@
/* Extended precision arithmetic functions for long double I/O. /* Extended precision arithmetic functions for long double I/O.
* This program has been placed in the public domain. * This program has been placed in the public domain.
*/ */
@ -244,7 +243,7 @@ static char *ermsg[7] = {
* *
* Exception flags are NOT fully supported. * Exception flags are NOT fully supported.
* *
* Define INFINITY in mconf.h for support of infinity; otherwise a * Define USE_INFINITY in mconf.h for support of infinity; otherwise a
* saturation arithmetic is implemented. * saturation arithmetic is implemented.
* *
* Define NANS for support of Not-a-Number items; otherwise the * Define NANS for support of Not-a-Number items; otherwise the
@ -381,12 +380,12 @@ typedef struct
#define VOLATILE #define VOLATILE
#define NANS #define NANS
#define INFINITY #define USE_INFINITY
/* NaN's require infinity support. */ /* NaN's require infinity support. */
#ifdef NANS #ifdef NANS
#ifndef INFINITY #ifndef INFINITY
#define INFINITY #define USE_INFINITY
#endif #endif
#endif #endif
@ -544,7 +543,7 @@ static void einfin(register short unsigned int *x, register LDPARMS *ldp)
{ {
register int i; register int i;
#ifdef INFINITY #ifdef USE_INFINITY
for( i=0; i<NE-1; i++ ) for( i=0; i<NE-1; i++ )
*x++ = 0; *x++ = 0;
*x |= 32767; *x |= 32767;
@ -596,7 +595,7 @@ else
/* get the exponent */ /* get the exponent */
*q = *p--; *q = *p--;
*q++ &= 0x7fff; /* delete the sign bit */ *q++ &= 0x7fff; /* delete the sign bit */
#ifdef INFINITY #ifdef USE_INFINITY
if( (*(q-1) & 0x7fff) == 0x7fff ) if( (*(q-1) & 0x7fff) == 0x7fff )
{ {
#ifdef NANS #ifdef NANS
@ -639,7 +638,7 @@ if( i )
*q-- = *p++ | 0x8000; *q-- = *p++ | 0x8000;
else else
*q-- = *p++; *q-- = *p++;
#ifdef INFINITY #ifdef USE_INFINITY
if( *(p-1) == 0x7fff ) if( *(p-1) == 0x7fff )
{ {
#ifdef NANS #ifdef NANS
@ -1173,7 +1172,7 @@ unsigned short r;
j = enormlz( s ); j = enormlz( s );
/* a blank significand could mean either zero or infinity. */ /* a blank significand could mean either zero or infinity. */
#ifndef INFINITY #ifndef USE_INFINITY
if( j > NBITS ) if( j > NBITS )
{ {
ecleazs( s ); ecleazs( s );
@ -1181,7 +1180,7 @@ if( j > NBITS )
} }
#endif #endif
exp -= j; exp -= j;
#ifndef INFINITY #ifndef USE_INFINITY
if( exp >= 32767L ) if( exp >= 32767L )
goto overf; goto overf;
#else #else
@ -1329,10 +1328,10 @@ mdfin:
s[NI-1] = 0; s[NI-1] = 0;
if( exp >= 32767L ) if( exp >= 32767L )
{ {
#ifndef INFINITY #ifndef USE_INFINITY
overf: overf:
#endif #endif
#ifdef INFINITY #ifdef USE_INFINITY
s[1] = 32767; s[1] = 32767;
for( i=2; i<NI-1; i++ ) for( i=2; i<NI-1; i++ )
s[i] = 0; s[i] = 0;
@ -1405,7 +1404,7 @@ unsigned short ai[NI], bi[NI], ci[NI];
int i, lost, j, k; int i, lost, j, k;
long lt, lta, ltb; long lt, lta, ltb;
#ifdef INFINITY #ifdef USE_INFINITY
if( eisinf(a) ) if( eisinf(a) )
{ {
emov(a,c); emov(a,c);
@ -1536,7 +1535,7 @@ if( ((ecmp(a,ezero) == 0) && (ecmp(b,ezero) == 0))
} }
#endif #endif
/* Infinity over anything else is infinity. */ /* Infinity over anything else is infinity. */
#ifdef INFINITY #ifdef USE_INFINITY
if( eisinf(b) ) if( eisinf(b) )
{ {
if( eisneg(a) ^ eisneg(b) ) if( eisneg(a) ^ eisneg(b) )
@ -1640,7 +1639,7 @@ if( (eisinf(a) && (ecmp(b,ezero) == 0))
} }
#endif #endif
/* Infinity times anything else is infinity. */ /* Infinity times anything else is infinity. */
#ifdef INFINITY #ifdef USE_INFINITY
if( eisinf(a) || eisinf(b) ) if( eisinf(a) || eisinf(b) )
{ {
if( eisneg(a) ^ eisneg(b) ) if( eisneg(a) ^ eisneg(b) )
@ -1719,7 +1718,7 @@ yy[0] = 0;
if( r & 0x8000 ) if( r & 0x8000 )
yy[0] = 0xffff; yy[0] = 0xffff;
r &= 0x7fff; r &= 0x7fff;
#ifdef INFINITY #ifdef USE_INFINITY
if( r == 0x7fff ) if( r == 0x7fff )
{ {
#ifdef NANS #ifdef NANS
@ -1865,7 +1864,7 @@ if((yy[NE-1] & 0x7fff) == 0 && (yy[NE-2] & 0x8000) == 0)
return; return;
} }
#endif #endif
#ifdef INFINITY #ifdef USE_INFINITY
/* Point to the exponent field. */ /* Point to the exponent field. */
p = &yy[NE-1]; p = &yy[NE-1];
if( (*p & 0x7fff) == 0x7fff ) if( (*p & 0x7fff) == 0x7fff )
@ -1900,7 +1899,7 @@ if( (*p & 0x7fff) == 0x7fff )
eneg(y); eneg(y);
return; return;
} }
#endif /* INFINITY */ #endif /* USE_INFINITY */
p = yy; p = yy;
q = y; q = y;
for( i=0; i<NE; i++ ) for( i=0; i<NE; i++ )
@ -1955,7 +1954,7 @@ else
for( i=0; i<4; i++ ) for( i=0; i<4; i++ )
*q++ = *p++; *q++ = *p++;
#else #else
#ifdef INFINITY #ifdef USE_INFINITY
#ifdef IBMPC #ifdef IBMPC
if (eiisinf (a)) if (eiisinf (a))
{ {
@ -1967,7 +1966,7 @@ if (eiisinf (a))
return; return;
} }
#endif /* IBMPC */ #endif /* IBMPC */
#endif /* INFINITY */ #endif /* USE_INFINITY */
for( i=0; i<4; i++ ) for( i=0; i<4; i++ )
*q-- = *p++; *q-- = *p++;
#endif #endif
@ -2010,7 +2009,7 @@ if( r & 0x8000 )
yy[0] = 0xffff; yy[0] = 0xffff;
yy[M] = (r & 0x0f) | 0x10; yy[M] = (r & 0x0f) | 0x10;
r &= ~0x800f; /* strip sign and 4 significand bits */ r &= ~0x800f; /* strip sign and 4 significand bits */
#ifdef INFINITY #ifdef USE_INFINITY
if( r == 0x7ff0 ) if( r == 0x7ff0 )
{ {
#ifdef NANS #ifdef NANS
@ -2120,7 +2119,7 @@ if( *p++ )
i = *p++; i = *p++;
if( i >= (unsigned int )2047 ) if( i >= (unsigned int )2047 )
{ /* Saturate at largest number less than infinity. */ { /* Saturate at largest number less than infinity. */
#ifdef INFINITY #ifdef USE_INFINITY
*y |= 0x7ff0; *y |= 0x7ff0;
#ifdef IBMPC #ifdef IBMPC
*(--y) = 0; *(--y) = 0;
@ -2132,7 +2131,7 @@ if( i >= (unsigned int )2047 )
*y++ = 0; *y++ = 0;
*y++ = 0; *y++ = 0;
#endif /* IBMPC */ #endif /* IBMPC */
#else /* !INFINITY */ #else /* !USE_INFINITY */
*y |= (unsigned short )0x7fef; *y |= (unsigned short )0x7fef;
#ifdef IBMPC #ifdef IBMPC
*(--y) = 0xffff; *(--y) = 0xffff;
@ -2144,7 +2143,7 @@ if( i >= (unsigned int )2047 )
*y++ = 0xffff; *y++ = 0xffff;
*y++ = 0xffff; *y++ = 0xffff;
#endif #endif
#endif /* !INFINITY */ #endif /* !USE_INFINITY */
return; return;
} }
if( i == 0 ) if( i == 0 )
@ -2202,7 +2201,7 @@ if( r & 0x8000 )
yy[0] = 0xffff; yy[0] = 0xffff;
yy[M] = (r & 0x7f) | 0200; yy[M] = (r & 0x7f) | 0200;
r &= ~0x807f; /* strip sign and 7 significand bits */ r &= ~0x807f; /* strip sign and 7 significand bits */
#ifdef INFINITY #ifdef USE_INFINITY
if( r == 0x7f80 ) if( r == 0x7f80 )
{ {
#ifdef NANS #ifdef NANS
@ -2285,7 +2284,7 @@ if( *p++ )
i = *p++; i = *p++;
if( i >= 255 ) if( i >= 255 )
{ /* Saturate at largest number less than infinity. */ { /* Saturate at largest number less than infinity. */
#ifdef INFINITY #ifdef USE_INFINITY
*y |= (unsigned short )0x7f80; *y |= (unsigned short )0x7f80;
#ifdef IBMPC #ifdef IBMPC
*(--y) = 0; *(--y) = 0;
@ -2297,7 +2296,7 @@ if( i >= 255 )
++y; ++y;
*y = 0; *y = 0;
#endif #endif
#else /* !INFINITY */ #else /* !USE_INFINITY */
*y |= (unsigned short )0x7f7f; *y |= (unsigned short )0x7f7f;
#ifdef IBMPC #ifdef IBMPC
*(--y) = 0xffff; *(--y) = 0xffff;
@ -2309,7 +2308,7 @@ if( i >= 255 )
++y; ++y;
*y = 0xffff; *y = 0xffff;
#endif #endif
#endif /* !INFINITY */ #endif /* !USE_INFINITY */
return; return;
} }
if( i == 0 ) if( i == 0 )
@ -3743,7 +3742,3 @@ switch( size )
for (i=0; i < n; i++) for (i=0; i < n; i++)
*nan++ = *p++; *nan++ = *p++;
} }