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qemu/fpu/softfloat-native.h
Peter Maydell 185698715d softfloat: Rename float*_is_nan() functions to float*_is_quiet_nan() 
The softfloat functions float*_is_nan() were badly misnamed,
because they return true only for quiet NaNs, not for all NaNs.
Rename them to float*_is_quiet_nan() to more accurately reflect
what they do.

This change was produced by:
 perl -p -i -e 's/_is_nan/_is_quiet_nan/g' $(git grep -l is_nan)
(with the results manually checked.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-01-02 11:15:25 +01:00

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/* Native implementation of soft float functions */
#include <math.h>
#if (defined(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) \
|| defined(CONFIG_SOLARIS)
#include <ieeefp.h>
#define fabsf(f) ((float)fabs(f))
#else
#include <fenv.h>
#endif
#if defined(__OpenBSD__) || defined(__NetBSD__)
#include <sys/param.h>
#endif
/*
* Define some C99-7.12.3 classification macros and
* some C99-.12.4 for Solaris systems OS less than 10,
* or Solaris 10 systems running GCC 3.x or less.
* Solaris 10 with GCC4 does not need these macros as they
* are defined in <iso/math_c99.h> with a compiler directive
*/
#if defined(CONFIG_SOLARIS) && \
((CONFIG_SOLARIS_VERSION <= 9 ) || \
((CONFIG_SOLARIS_VERSION == 10) && (__GNUC__ < 4))) \
|| (defined(__OpenBSD__) && (OpenBSD < 200811))
/*
* C99 7.12.3 classification macros
* and
* C99 7.12.14 comparison macros
*
* ... do not work on Solaris 10 using GNU CC 3.4.x.
* Try to workaround the missing / broken C99 math macros.
*/
#if defined(__OpenBSD__)
#define unordered(x, y) (isnan(x) || isnan(y))
#endif
#ifdef __NetBSD__
#ifndef isgreater
#define isgreater(x, y) __builtin_isgreater(x, y)
#endif
#ifndef isgreaterequal
#define isgreaterequal(x, y) __builtin_isgreaterequal(x, y)
#endif
#ifndef isless
#define isless(x, y) __builtin_isless(x, y)
#endif
#ifndef islessequal
#define islessequal(x, y) __builtin_islessequal(x, y)
#endif
#ifndef isunordered
#define isunordered(x, y) __builtin_isunordered(x, y)
#endif
#endif
#define isnormal(x) (fpclass(x) >= FP_NZERO)
#define isgreater(x, y) ((!unordered(x, y)) && ((x) > (y)))
#define isgreaterequal(x, y) ((!unordered(x, y)) && ((x) >= (y)))
#define isless(x, y) ((!unordered(x, y)) && ((x) < (y)))
#define islessequal(x, y) ((!unordered(x, y)) && ((x) <= (y)))
#define isunordered(x,y) unordered(x, y)
#endif
#if defined(__sun__) && !defined(CONFIG_NEEDS_LIBSUNMATH)
#ifndef isnan
# define isnan(x) \
(sizeof (x) == sizeof (long double) ? isnan_ld (x) \
: sizeof (x) == sizeof (double) ? isnan_d (x) \
: isnan_f (x))
static inline int isnan_f (float x) { return x != x; }
static inline int isnan_d (double x) { return x != x; }
static inline int isnan_ld (long double x) { return x != x; }
#endif
#ifndef isinf
# define isinf(x) \
(sizeof (x) == sizeof (long double) ? isinf_ld (x) \
: sizeof (x) == sizeof (double) ? isinf_d (x) \
: isinf_f (x))
static inline int isinf_f (float x) { return isnan (x - x); }
static inline int isinf_d (double x) { return isnan (x - x); }
static inline int isinf_ld (long double x) { return isnan (x - x); }
#endif
#endif
typedef float float32;
typedef double float64;
#ifdef FLOATX80
typedef long double floatx80;
#endif
typedef union {
float32 f;
uint32_t i;
} float32u;
typedef union {
float64 f;
uint64_t i;
} float64u;
#ifdef FLOATX80
typedef union {
floatx80 f;
struct {
uint64_t low;
uint16_t high;
} i;
} floatx80u;
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE floating-point rounding mode.
*----------------------------------------------------------------------------*/
#if (defined(CONFIG_BSD) && !defined(__APPLE__) && !defined(__GLIBC__)) \
|| defined(CONFIG_SOLARIS)
#if defined(__OpenBSD__)
#define FE_RM FP_RM
#define FE_RP FP_RP
#define FE_RZ FP_RZ
#endif
enum {
float_round_nearest_even = FP_RN,
float_round_down = FP_RM,
float_round_up = FP_RP,
float_round_to_zero = FP_RZ
};
#else
enum {
float_round_nearest_even = FE_TONEAREST,
float_round_down = FE_DOWNWARD,
float_round_up = FE_UPWARD,
float_round_to_zero = FE_TOWARDZERO
};
#endif
typedef struct float_status {
int float_rounding_mode;
#ifdef FLOATX80
int floatx80_rounding_precision;
#endif
} float_status;
void set_float_rounding_mode(int val STATUS_PARAM);
#ifdef FLOATX80
void set_floatx80_rounding_precision(int val STATUS_PARAM);
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE integer-to-floating-point conversion routines.
*----------------------------------------------------------------------------*/
float32 int32_to_float32( int STATUS_PARAM);
float32 uint32_to_float32( unsigned int STATUS_PARAM);
float64 int32_to_float64( int STATUS_PARAM);
float64 uint32_to_float64( unsigned int STATUS_PARAM);
#ifdef FLOATX80
floatx80 int32_to_floatx80( int STATUS_PARAM);
#endif
#ifdef FLOAT128
float128 int32_to_float128( int STATUS_PARAM);
#endif
float32 int64_to_float32( int64_t STATUS_PARAM);
float32 uint64_to_float32( uint64_t STATUS_PARAM);
float64 int64_to_float64( int64_t STATUS_PARAM);
float64 uint64_to_float64( uint64_t v STATUS_PARAM);
#ifdef FLOATX80
floatx80 int64_to_floatx80( int64_t STATUS_PARAM);
#endif
#ifdef FLOAT128
float128 int64_to_float128( int64_t STATUS_PARAM);
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE single-precision conversion routines.
*----------------------------------------------------------------------------*/
int float32_to_int32( float32 STATUS_PARAM);
int float32_to_int32_round_to_zero( float32 STATUS_PARAM);
unsigned int float32_to_uint32( float32 a STATUS_PARAM);
unsigned int float32_to_uint32_round_to_zero( float32 a STATUS_PARAM);
int64_t float32_to_int64( float32 STATUS_PARAM);
int64_t float32_to_int64_round_to_zero( float32 STATUS_PARAM);
float64 float32_to_float64( float32 STATUS_PARAM);
#ifdef FLOATX80
floatx80 float32_to_floatx80( float32 STATUS_PARAM);
#endif
#ifdef FLOAT128
float128 float32_to_float128( float32 STATUS_PARAM);
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE single-precision operations.
*----------------------------------------------------------------------------*/
float32 float32_round_to_int( float32 STATUS_PARAM);
INLINE float32 float32_add( float32 a, float32 b STATUS_PARAM)
{
return a + b;
}
INLINE float32 float32_sub( float32 a, float32 b STATUS_PARAM)
{
return a - b;
}
INLINE float32 float32_mul( float32 a, float32 b STATUS_PARAM)
{
return a * b;
}
INLINE float32 float32_div( float32 a, float32 b STATUS_PARAM)
{
return a / b;
}
float32 float32_rem( float32, float32 STATUS_PARAM);
float32 float32_sqrt( float32 STATUS_PARAM);
INLINE int float32_eq( float32 a, float32 b STATUS_PARAM)
{
return a == b;
}
INLINE int float32_le( float32 a, float32 b STATUS_PARAM)
{
return a <= b;
}
INLINE int float32_lt( float32 a, float32 b STATUS_PARAM)
{
return a < b;
}
INLINE int float32_eq_signaling( float32 a, float32 b STATUS_PARAM)
{
return a <= b && a >= b;
}
INLINE int float32_le_quiet( float32 a, float32 b STATUS_PARAM)
{
return islessequal(a, b);
}
INLINE int float32_lt_quiet( float32 a, float32 b STATUS_PARAM)
{
return isless(a, b);
}
INLINE int float32_unordered( float32 a, float32 b STATUS_PARAM)
{
return isunordered(a, b);
}
int float32_compare( float32, float32 STATUS_PARAM );
int float32_compare_quiet( float32, float32 STATUS_PARAM );
int float32_is_signaling_nan( float32 );
int float32_is_quiet_nan( float32 );
INLINE float32 float32_abs(float32 a)
{
return fabsf(a);
}
INLINE float32 float32_chs(float32 a)
{
return -a;
}
INLINE float32 float32_is_infinity(float32 a)
{
return fpclassify(a) == FP_INFINITE;
}
INLINE float32 float32_is_neg(float32 a)
{
float32u u;
u.f = a;
return u.i >> 31;
}
INLINE float32 float32_is_zero(float32 a)
{
return fpclassify(a) == FP_ZERO;
}
INLINE float32 float32_scalbn(float32 a, int n)
{
return scalbnf(a, n);
}
/*----------------------------------------------------------------------------
| Software IEC/IEEE double-precision conversion routines.
*----------------------------------------------------------------------------*/
int float64_to_int32( float64 STATUS_PARAM );
int float64_to_int32_round_to_zero( float64 STATUS_PARAM );
unsigned int float64_to_uint32( float64 STATUS_PARAM );
unsigned int float64_to_uint32_round_to_zero( float64 STATUS_PARAM );
int64_t float64_to_int64( float64 STATUS_PARAM );
int64_t float64_to_int64_round_to_zero( float64 STATUS_PARAM );
uint64_t float64_to_uint64( float64 STATUS_PARAM );
uint64_t float64_to_uint64_round_to_zero( float64 STATUS_PARAM );
float32 float64_to_float32( float64 STATUS_PARAM );
#ifdef FLOATX80
floatx80 float64_to_floatx80( float64 STATUS_PARAM );
#endif
#ifdef FLOAT128
float128 float64_to_float128( float64 STATUS_PARAM );
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE double-precision operations.
*----------------------------------------------------------------------------*/
float64 float64_round_to_int( float64 STATUS_PARAM );
float64 float64_trunc_to_int( float64 STATUS_PARAM );
INLINE float64 float64_add( float64 a, float64 b STATUS_PARAM)
{
return a + b;
}
INLINE float64 float64_sub( float64 a, float64 b STATUS_PARAM)
{
return a - b;
}
INLINE float64 float64_mul( float64 a, float64 b STATUS_PARAM)
{
return a * b;
}
INLINE float64 float64_div( float64 a, float64 b STATUS_PARAM)
{
return a / b;
}
float64 float64_rem( float64, float64 STATUS_PARAM );
float64 float64_sqrt( float64 STATUS_PARAM );
INLINE int float64_eq( float64 a, float64 b STATUS_PARAM)
{
return a == b;
}
INLINE int float64_le( float64 a, float64 b STATUS_PARAM)
{
return a <= b;
}
INLINE int float64_lt( float64 a, float64 b STATUS_PARAM)
{
return a < b;
}
INLINE int float64_eq_signaling( float64 a, float64 b STATUS_PARAM)
{
return a <= b && a >= b;
}
INLINE int float64_le_quiet( float64 a, float64 b STATUS_PARAM)
{
return islessequal(a, b);
}
INLINE int float64_lt_quiet( float64 a, float64 b STATUS_PARAM)
{
return isless(a, b);
}
INLINE int float64_unordered( float64 a, float64 b STATUS_PARAM)
{
return isunordered(a, b);
}
int float64_compare( float64, float64 STATUS_PARAM );
int float64_compare_quiet( float64, float64 STATUS_PARAM );
int float64_is_signaling_nan( float64 );
int float64_is_quiet_nan( float64 );
INLINE float64 float64_abs(float64 a)
{
return fabs(a);
}
INLINE float64 float64_chs(float64 a)
{
return -a;
}
INLINE float64 float64_is_infinity(float64 a)
{
return fpclassify(a) == FP_INFINITE;
}
INLINE float64 float64_is_neg(float64 a)
{
float64u u;
u.f = a;
return u.i >> 63;
}
INLINE float64 float64_is_zero(float64 a)
{
return fpclassify(a) == FP_ZERO;
}
INLINE float64 float64_scalbn(float64 a, int n)
{
return scalbn(a, n);
}
#ifdef FLOATX80
/*----------------------------------------------------------------------------
| Software IEC/IEEE extended double-precision conversion routines.
*----------------------------------------------------------------------------*/
int floatx80_to_int32( floatx80 STATUS_PARAM );
int floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM );
int64_t floatx80_to_int64( floatx80 STATUS_PARAM);
int64_t floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM);
float32 floatx80_to_float32( floatx80 STATUS_PARAM );
float64 floatx80_to_float64( floatx80 STATUS_PARAM );
#ifdef FLOAT128
float128 floatx80_to_float128( floatx80 STATUS_PARAM );
#endif
/*----------------------------------------------------------------------------
| Software IEC/IEEE extended double-precision operations.
*----------------------------------------------------------------------------*/
floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM );
INLINE floatx80 floatx80_add( floatx80 a, floatx80 b STATUS_PARAM)
{
return a + b;
}
INLINE floatx80 floatx80_sub( floatx80 a, floatx80 b STATUS_PARAM)
{
return a - b;
}
INLINE floatx80 floatx80_mul( floatx80 a, floatx80 b STATUS_PARAM)
{
return a * b;
}
INLINE floatx80 floatx80_div( floatx80 a, floatx80 b STATUS_PARAM)
{
return a / b;
}
floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM );
floatx80 floatx80_sqrt( floatx80 STATUS_PARAM );
INLINE int floatx80_eq( floatx80 a, floatx80 b STATUS_PARAM)
{
return a == b;
}
INLINE int floatx80_le( floatx80 a, floatx80 b STATUS_PARAM)
{
return a <= b;
}
INLINE int floatx80_lt( floatx80 a, floatx80 b STATUS_PARAM)
{
return a < b;
}
INLINE int floatx80_eq_signaling( floatx80 a, floatx80 b STATUS_PARAM)
{
return a <= b && a >= b;
}
INLINE int floatx80_le_quiet( floatx80 a, floatx80 b STATUS_PARAM)
{
return islessequal(a, b);
}
INLINE int floatx80_lt_quiet( floatx80 a, floatx80 b STATUS_PARAM)
{
return isless(a, b);
}
INLINE int floatx80_unordered( floatx80 a, floatx80 b STATUS_PARAM)
{
return isunordered(a, b);
}
int floatx80_compare( floatx80, floatx80 STATUS_PARAM );
int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM );
int floatx80_is_signaling_nan( floatx80 );
int floatx80_is_quiet_nan( floatx80 );
INLINE floatx80 floatx80_abs(floatx80 a)
{
return fabsl(a);
}
INLINE floatx80 floatx80_chs(floatx80 a)
{
return -a;
}
INLINE floatx80 floatx80_is_infinity(floatx80 a)
{
return fpclassify(a) == FP_INFINITE;
}
INLINE floatx80 floatx80_is_neg(floatx80 a)
{
floatx80u u;
u.f = a;
return u.i.high >> 15;
}
INLINE floatx80 floatx80_is_zero(floatx80 a)
{
return fpclassify(a) == FP_ZERO;
}
INLINE floatx80 floatx80_scalbn(floatx80 a, int n)
{
return scalbnl(a, n);
}
#endif
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