diff options
Diffstat (limited to 'libm')
| -rw-r--r-- | libm/fp_private.h | 33 | ||||
| -rw-r--r-- | libm/fpmacros.c | 101 |
2 files changed, 52 insertions, 82 deletions
diff --git a/libm/fp_private.h b/libm/fp_private.h index 30b3e0572..97b3b5703 100644 --- a/libm/fp_private.h +++ b/libm/fp_private.h @@ -72,11 +72,11 @@ typedef struct /* Hex representation of a double. */ { #if defined(__BIG_ENDIAN__) - unsigned long int high; - unsigned long int low; + u_int32_t high; + u_int32_t low; #else - unsigned long int low; - unsigned long int high; + u_int32_t low; + u_int32_t high; #endif } dHexParts; @@ -85,28 +85,3 @@ typedef union unsigned char byties[8]; double dbl; } DblInHex; - -//enum boolean { FALSE, TRUE }; - -/******************************************************************************* -* Macros to access long subfields of a double value. * -*******************************************************************************/ - -#define highpartd(x) *((long *) &x) -#define lowpartd(x) *((long *) &x + 1) - -enum { - FP_SNAN = 0, /* signaling NaN - */ - FP_QNAN = 1, /* quiet NaN - */ - FP_INFINITE = 2, /* + or - infinity - */ - FP_ZERO = 3, /* + or - zero - */ - FP_NORMAL = 4, /* all normal numbers - */ - FP_SUBNORMAL = 5 /* denormal numbers - */ -}; - diff --git a/libm/fpmacros.c b/libm/fpmacros.c index 10aa5bd41..968259520 100644 --- a/libm/fpmacros.c +++ b/libm/fpmacros.c @@ -21,6 +21,8 @@ ***********************************************************************/ #include <features.h> +#include <sys/types.h> +#include <math.h> #include "fp_private.h" #define SIGN_MASK 0x80000000 @@ -29,7 +31,7 @@ #define FFRAC_MASK 0x007fffff /*********************************************************************** - long int __fpclassifyf(float x) returns the classification code of the + int __fpclassifyf(float x) returns the classification code of the argument x, as defined in <fp.h>. Exceptions: INVALID signaled if x is a signaling NaN; in this case, @@ -38,12 +40,12 @@ Calls: none ***********************************************************************/ -long int __fpclassifyf ( float x ) +int __fpclassifyf ( float x ) { - unsigned long int iexp; + unsigned int iexp; union { - unsigned long int lval; + u_int32_t lval; float fval; } z; @@ -52,20 +54,17 @@ long int __fpclassifyf ( float x ) if (iexp == FEXP_MASK) { /* NaN or INF case */ if ((z.lval & 0x007fffff) == 0) - return (long int) FP_INFINITE; - else if ((z.lval & 0x00400000) != 0) - return (long int) FP_QNAN; - else - return (long int) FP_SNAN; + return FP_INFINITE; + return FP_NAN; } if (iexp != 0) /* normal float */ - return (long int) FP_NORMAL; + return FP_NORMAL; if (x == 0.0) - return (long int) FP_ZERO; /* zero */ + return FP_ZERO; /* zero */ else - return (long int) FP_SUBNORMAL; /* must be subnormal */ + return FP_SUBNORMAL; /* must be subnormal */ } @@ -79,9 +78,9 @@ long int __fpclassifyf ( float x ) Calls: none ***********************************************************************/ -long int __fpclassify ( double arg ) +int __fpclassify ( double arg ) { - register unsigned long int exponent; + register unsigned int exponent; union { dHexParts hex; @@ -94,23 +93,23 @@ long int __fpclassify ( double arg ) if ( exponent == dExpMask ) { if ( ( ( x.hex.high & dHighMan ) | x.hex.low ) == 0 ) - return (long int) FP_INFINITE; + return FP_INFINITE; else - return ( x.hex.high & 0x00080000 ) ? FP_QNAN : FP_SNAN; + return FP_NAN; } else if ( exponent != 0) - return (long int) FP_NORMAL; + return FP_NORMAL; else { if ( arg == 0.0 ) - return (long int) FP_ZERO; + return FP_ZERO; else - return (long int) FP_SUBNORMAL; + return FP_SUBNORMAL; } } /*********************************************************************** - long int __isnormalf(float x) returns nonzero if and only if x is a + int __isnormalf(float x) returns nonzero if and only if x is a normalized float number and zero otherwise. Exceptions: INVALID is raised if x is a signaling NaN; in this case, @@ -119,11 +118,11 @@ long int __fpclassify ( double arg ) Calls: none ***********************************************************************/ -long int __isnormalf ( float x ) +int __isnormalf ( float x ) { - unsigned long int iexp; + unsigned int iexp; union { - unsigned long int lval; + u_int32_t lval; float fval; } z; @@ -133,14 +132,14 @@ long int __isnormalf ( float x ) } -long int __isnorma ( double x ) +int __isnormal ( double x ) { return ( __fpclassify ( x ) == FP_NORMAL ); } /*********************************************************************** - long int __isfinitef(float x) returns nonzero if and only if x is a + int __isfinitef(float x) returns nonzero if and only if x is a finite (normal, subnormal, or zero) float number and zero otherwise. Exceptions: INVALID is raised if x is a signaling NaN; in this case, @@ -149,10 +148,10 @@ long int __isnorma ( double x ) Calls: none ***********************************************************************/ -long int __finitef ( float x ) +int __finitef ( float x ) { union { - unsigned long int lval; + u_int32_t lval; float fval; } z; @@ -160,14 +159,14 @@ long int __finitef ( float x ) return ((z.lval & FEXP_MASK) != FEXP_MASK); } -long int __finite ( double x ) +int __finite ( double x ) { return ( __fpclassify ( x ) >= FP_ZERO ); } /*********************************************************************** - long int __signbitf(float x) returns nonzero if and only if the sign + int __signbitf(float x) returns nonzero if and only if the sign bit of x is set and zero otherwise. Exceptions: INVALID is raised if x is a signaling NaN. @@ -175,10 +174,10 @@ long int __finite ( double x ) Calls: none ***********************************************************************/ -long int __signbitf ( float x ) +int __signbitf ( float x ) { union { - unsigned long int lval; + u_int32_t lval; float fval; } z; @@ -194,14 +193,14 @@ long int __signbitf ( float x ) Calls: none ***********************************************************************/ -long int __signbit ( double arg ) +int __signbit ( double arg ) { union { dHexParts hex; double dbl; } x; - long int sign; + int sign; x.dbl = arg; sign = ( ( x.hex.high & dSgnMask ) == dSgnMask ) ? 1 : 0; @@ -210,15 +209,15 @@ long int __signbit ( double arg ) /*********************************************************************** -* long int __isinff(float x) returns -1 if value represents negative +* int __isinff(float x) returns -1 if value represents negative * infinity, 1 if value represents positive infinity, * and 0 otherwise. * * Calls: __signbit * +***********************************************************************/ -long int __isinff ( float x ) +int __isinff ( float x ) { - long int class = __fpclassifyf(x); + int class = __fpclassifyf(x); if ( class == FP_INFINITE ) { return ( (__signbitf(x)) ? -1 : 1); } @@ -226,9 +225,9 @@ long int __isinff ( float x ) } weak_alias (__isinff, isinff) -long int __isinf ( double x ) +int __isinf ( double x ) { - long int class = __fpclassify(x); + int class = __fpclassify(x); if ( class == FP_INFINITE ) { return ( (__signbit(x)) ? -1 : 1); } @@ -237,21 +236,19 @@ long int __isinf ( double x ) weak_alias (__isinf, isinf) #if 0 -long int __isinfl ( long double x ) +int __isinfl ( long double x ) { - long int class = __fpclassify(x); + int class = __fpclassify(x); if ( class == FP_INFINITE ) { return ( (__signbit(x)) ? -1 : 1); } return 0; } weak_alias (__isinfl, isinfl); -#else -weak_alias (__isinf, isinfl) #endif /*********************************************************************** - long int __isnanf(float x) returns nonzero if and only if x is a + int __isnanf(float x) returns nonzero if and only if x is a NaN and zero otherwise. Exceptions: INVALID is raised if x is a signaling NaN; in this case, @@ -260,10 +257,10 @@ weak_alias (__isinf, isinfl) Calls: none ***********************************************************************/ -long int __isnanf ( float x ) +int __isnanf ( float x ) { union { - unsigned long int lval; + u_int32_t lval; float fval; } z; @@ -272,21 +269,19 @@ long int __isnanf ( float x ) } weak_alias (__isnanf, isnanf); -long int __isnan ( double x ) +int __isnan ( double x ) { - long int class = __fpclassify(x); - return ( ( class == FP_SNAN ) || ( class == FP_QNAN ) ); + int class = __fpclassify(x); + return ( class == FP_NAN ); } weak_alias (__isnan, isnan); #if 0 -long int __isnanl ( long double x ) +int __isnanl ( long double x ) { - long int class = __fpclassify(x); - return ( ( class == FP_SNAN ) || ( class == FP_QNAN ) ); + int class = __fpclassify(x); + return ( class == FP_NAN ); } weak_alias (__isnanl, isnanl); -#else -weak_alias (__isnan, isnanl); #endif |