diff options
Diffstat (limited to 'fpu/softfloat.h')
| -rw-r--r-- | fpu/softfloat.h | 78 |
1 files changed, 77 insertions, 1 deletions
diff --git a/fpu/softfloat.h b/fpu/softfloat.h index 5f95d06..850a01f 100644 --- a/fpu/softfloat.h +++ b/fpu/softfloat.h @@ -50,8 +50,10 @@ these four paragraphs for those parts of this code that are retained. typedef uint8_t flag; typedef uint8_t uint8; typedef int8_t int8; +#ifndef _AIX typedef int uint16; typedef int int16; +#endif typedef unsigned int uint32; typedef signed int int32; typedef uint64_t uint64; @@ -88,7 +90,7 @@ typedef int64_t sbits64; #define FLOAT128 #else /* native float support */ -#if (defined(__i386__) || defined(__x86_64__)) && !defined(_BSD) +#if (defined(__i386__) || defined(__x86_64__)) && !defined(HOST_BSD) #define FLOATX80 #endif #endif /* !CONFIG_SOFTFLOAT */ @@ -188,10 +190,20 @@ typedef struct float_status { #ifdef FLOATX80 signed char floatx80_rounding_precision; #endif + flag flush_to_zero; + flag default_nan_mode; } float_status; void set_float_rounding_mode(int val STATUS_PARAM); void set_float_exception_flags(int val STATUS_PARAM); +INLINE void set_flush_to_zero(flag val STATUS_PARAM) +{ + STATUS(flush_to_zero) = val; +} +INLINE void set_default_nan_mode(flag val STATUS_PARAM) +{ + STATUS(default_nan_mode) = val; +} INLINE int get_float_exception_flags(float_status *status) { return STATUS(float_exception_flags); @@ -257,6 +269,7 @@ float32 float32_mul( float32, float32 STATUS_PARAM ); float32 float32_div( float32, float32 STATUS_PARAM ); float32 float32_rem( float32, float32 STATUS_PARAM ); float32 float32_sqrt( float32 STATUS_PARAM ); +float32 float32_log2( float32 STATUS_PARAM ); int float32_eq( float32, float32 STATUS_PARAM ); int float32_le( float32, float32 STATUS_PARAM ); int float32_lt( float32, float32 STATUS_PARAM ); @@ -279,7 +292,23 @@ INLINE float32 float32_chs(float32 a) return make_float32(float32_val(a) ^ 0x80000000); } +INLINE int float32_is_infinity(float32 a) +{ + return (float32_val(a) & 0x7fffffff) == 0x7f800000; +} + +INLINE int float32_is_neg(float32 a) +{ + return float32_val(a) >> 31; +} + +INLINE int float32_is_zero(float32 a) +{ + return (float32_val(a) & 0x7fffffff) == 0; +} + #define float32_zero make_float32(0) +#define float32_one make_float32(0x3f800000) /*---------------------------------------------------------------------------- | Software IEC/IEEE double-precision conversion routines. @@ -311,6 +340,7 @@ float64 float64_mul( float64, float64 STATUS_PARAM ); float64 float64_div( float64, float64 STATUS_PARAM ); float64 float64_rem( float64, float64 STATUS_PARAM ); float64 float64_sqrt( float64 STATUS_PARAM ); +float64 float64_log2( float64 STATUS_PARAM ); int float64_eq( float64, float64 STATUS_PARAM ); int float64_le( float64, float64 STATUS_PARAM ); int float64_lt( float64, float64 STATUS_PARAM ); @@ -333,7 +363,23 @@ INLINE float64 float64_chs(float64 a) return make_float64(float64_val(a) ^ 0x8000000000000000LL); } +INLINE int float64_is_infinity(float64 a) +{ + return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL; +} + +INLINE int float64_is_neg(float64 a) +{ + return float64_val(a) >> 63; +} + +INLINE int float64_is_zero(float64 a) +{ + return (float64_val(a) & 0x7fffffffffffffffLL) == 0; +} + #define float64_zero make_float64(0) +#define float64_one make_float64(0x3ff0000000000000LL) #ifdef FLOATX80 @@ -382,6 +428,21 @@ INLINE floatx80 floatx80_chs(floatx80 a) return a; } +INLINE int floatx80_is_infinity(floatx80 a) +{ + return (a.high & 0x7fff) == 0x7fff && a.low == 0; +} + +INLINE int floatx80_is_neg(floatx80 a) +{ + return a.high >> 15; +} + +INLINE int floatx80_is_zero(floatx80 a) +{ + return (a.high & 0x7fff) == 0 && a.low == 0; +} + #endif #ifdef FLOAT128 @@ -433,6 +494,21 @@ INLINE float128 float128_chs(float128 a) return a; } +INLINE int float128_is_infinity(float128 a) +{ + return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0; +} + +INLINE int float128_is_neg(float128 a) +{ + return a.high >> 63; +} + +INLINE int float128_is_zero(float128 a) +{ + return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; +} + #endif #else /* CONFIG_SOFTFLOAT */ |