diff options
Diffstat (limited to 'fpu/softfloat-specialize.c.inc')
| -rw-r--r-- | fpu/softfloat-specialize.c.inc | 230 |
1 files changed, 118 insertions, 112 deletions
diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index 034d18199c..08b6c88176 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -79,12 +79,18 @@ this code that are retained. * version 2 or later. See the COPYING file in the top-level directory. */ -/* Define for architectures which deviate from IEEE in not supporting +/* + * Define whether architecture deviates from IEEE in not supporting * signaling NaNs (so all NaNs are treated as quiet). */ +static inline bool no_signaling_nans(float_status *status) +{ #if defined(TARGET_XTENSA) -#define NO_SIGNALING_NANS 1 + return status->no_signaling_nans; +#else + return false; #endif +} /* Define how the architecture discriminates signaling NaNs. * This done with the most significant bit of the fraction. @@ -111,12 +117,12 @@ static inline bool snan_bit_is_one(float_status *status) static bool parts_is_snan_frac(uint64_t frac, float_status *status) { -#ifdef NO_SIGNALING_NANS - return false; -#else - bool msb = extract64(frac, DECOMPOSED_BINARY_POINT - 1, 1); - return msb == snan_bit_is_one(status); -#endif + if (no_signaling_nans(status)) { + return false; + } else { + bool msb = extract64(frac, DECOMPOSED_BINARY_POINT - 1, 1); + return msb == snan_bit_is_one(status); + } } /*---------------------------------------------------------------------------- @@ -170,9 +176,8 @@ static FloatParts parts_default_nan(float_status *status) static FloatParts parts_silence_nan(FloatParts a, float_status *status) { -#ifdef NO_SIGNALING_NANS - g_assert_not_reached(); -#elif defined(TARGET_HPPA) + g_assert(!no_signaling_nans(status)); +#if defined(TARGET_HPPA) a.frac &= ~(1ULL << (DECOMPOSED_BINARY_POINT - 1)); a.frac |= 1ULL << (DECOMPOSED_BINARY_POINT - 2); #else @@ -247,16 +252,17 @@ typedef struct { bool float16_is_quiet_nan(float16 a_, float_status *status) { -#ifdef NO_SIGNALING_NANS - return float16_is_any_nan(a_); -#else - uint16_t a = float16_val(a_); - if (snan_bit_is_one(status)) { - return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF); + if (no_signaling_nans(status)) { + return float16_is_any_nan(a_); } else { - return ((a >> 9) & 0x3F) == 0x3F; + uint16_t a = float16_val(a_); + if (snan_bit_is_one(status)) { + return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF); + } else { + + return ((a >> 9) & 0x3F) == 0x3F; + } } -#endif } /*---------------------------------------------------------------------------- @@ -266,16 +272,16 @@ bool float16_is_quiet_nan(float16 a_, float_status *status) bool float16_is_signaling_nan(float16 a_, float_status *status) { -#ifdef NO_SIGNALING_NANS - return 0; -#else - uint16_t a = float16_val(a_); - if (snan_bit_is_one(status)) { - return ((a >> 9) & 0x3F) == 0x3F; + if (no_signaling_nans(status)) { + return 0; } else { - return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF); + uint16_t a = float16_val(a_); + if (snan_bit_is_one(status)) { + return ((a >> 9) & 0x3F) == 0x3F; + } else { + return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF); + } } -#endif } /*---------------------------------------------------------------------------- @@ -285,16 +291,16 @@ bool float16_is_signaling_nan(float16 a_, float_status *status) bool float32_is_quiet_nan(float32 a_, float_status *status) { -#ifdef NO_SIGNALING_NANS - return float32_is_any_nan(a_); -#else - uint32_t a = float32_val(a_); - if (snan_bit_is_one(status)) { - return (((a >> 22) & 0x1FF) == 0x1FE) && (a & 0x003FFFFF); + if (no_signaling_nans(status)) { + return float32_is_any_nan(a_); } else { - return ((uint32_t)(a << 1) >= 0xFF800000); + uint32_t a = float32_val(a_); + if (snan_bit_is_one(status)) { + return (((a >> 22) & 0x1FF) == 0x1FE) && (a & 0x003FFFFF); + } else { + return ((uint32_t)(a << 1) >= 0xFF800000); + } } -#endif } /*---------------------------------------------------------------------------- @@ -304,16 +310,16 @@ bool float32_is_quiet_nan(float32 a_, float_status *status) bool float32_is_signaling_nan(float32 a_, float_status *status) { -#ifdef NO_SIGNALING_NANS - return 0; -#else - uint32_t a = float32_val(a_); - if (snan_bit_is_one(status)) { - return ((uint32_t)(a << 1) >= 0xFF800000); + if (no_signaling_nans(status)) { + return 0; } else { - return (((a >> 22) & 0x1FF) == 0x1FE) && (a & 0x003FFFFF); + uint32_t a = float32_val(a_); + if (snan_bit_is_one(status)) { + return ((uint32_t)(a << 1) >= 0xFF800000); + } else { + return (((a >> 22) & 0x1FF) == 0x1FE) && (a & 0x003FFFFF); + } } -#endif } /*---------------------------------------------------------------------------- @@ -639,17 +645,17 @@ static float32 propagateFloat32NaN(float32 a, float32 b, float_status *status) bool float64_is_quiet_nan(float64 a_, float_status *status) { -#ifdef NO_SIGNALING_NANS - return float64_is_any_nan(a_); -#else - uint64_t a = float64_val(a_); - if (snan_bit_is_one(status)) { - return (((a >> 51) & 0xFFF) == 0xFFE) - && (a & 0x0007FFFFFFFFFFFFULL); + if (no_signaling_nans(status)) { + return float64_is_any_nan(a_); } else { - return ((a << 1) >= 0xFFF0000000000000ULL); + uint64_t a = float64_val(a_); + if (snan_bit_is_one(status)) { + return (((a >> 51) & 0xFFF) == 0xFFE) + && (a & 0x0007FFFFFFFFFFFFULL); + } else { + return ((a << 1) >= 0xFFF0000000000000ULL); + } } -#endif } /*---------------------------------------------------------------------------- @@ -659,17 +665,17 @@ bool float64_is_quiet_nan(float64 a_, float_status *status) bool float64_is_signaling_nan(float64 a_, float_status *status) { -#ifdef NO_SIGNALING_NANS - return 0; -#else - uint64_t a = float64_val(a_); - if (snan_bit_is_one(status)) { - return ((a << 1) >= 0xFFF0000000000000ULL); + if (no_signaling_nans(status)) { + return 0; } else { - return (((a >> 51) & 0xFFF) == 0xFFE) - && (a & UINT64_C(0x0007FFFFFFFFFFFF)); + uint64_t a = float64_val(a_); + if (snan_bit_is_one(status)) { + return ((a << 1) >= 0xFFF0000000000000ULL); + } else { + return (((a >> 51) & 0xFFF) == 0xFFE) + && (a & UINT64_C(0x0007FFFFFFFFFFFF)); + } } -#endif } /*---------------------------------------------------------------------------- @@ -778,21 +784,21 @@ static float64 propagateFloat64NaN(float64 a, float64 b, float_status *status) int floatx80_is_quiet_nan(floatx80 a, float_status *status) { -#ifdef NO_SIGNALING_NANS - return floatx80_is_any_nan(a); -#else - if (snan_bit_is_one(status)) { - uint64_t aLow; - - aLow = a.low & ~0x4000000000000000ULL; - return ((a.high & 0x7FFF) == 0x7FFF) - && (aLow << 1) - && (a.low == aLow); + if (no_signaling_nans(status)) { + return floatx80_is_any_nan(a); } else { - return ((a.high & 0x7FFF) == 0x7FFF) - && (UINT64_C(0x8000000000000000) <= ((uint64_t)(a.low << 1))); + if (snan_bit_is_one(status)) { + uint64_t aLow; + + aLow = a.low & ~0x4000000000000000ULL; + return ((a.high & 0x7FFF) == 0x7FFF) + && (aLow << 1) + && (a.low == aLow); + } else { + return ((a.high & 0x7FFF) == 0x7FFF) + && (UINT64_C(0x8000000000000000) <= ((uint64_t)(a.low << 1))); + } } -#endif } /*---------------------------------------------------------------------------- @@ -803,21 +809,21 @@ int floatx80_is_quiet_nan(floatx80 a, float_status *status) int floatx80_is_signaling_nan(floatx80 a, float_status *status) { -#ifdef NO_SIGNALING_NANS - return 0; -#else - if (snan_bit_is_one(status)) { - return ((a.high & 0x7FFF) == 0x7FFF) - && ((a.low << 1) >= 0x8000000000000000ULL); + if (no_signaling_nans(status)) { + return 0; } else { - uint64_t aLow; + if (snan_bit_is_one(status)) { + return ((a.high & 0x7FFF) == 0x7FFF) + && ((a.low << 1) >= 0x8000000000000000ULL); + } else { + uint64_t aLow; - aLow = a.low & ~UINT64_C(0x4000000000000000); - return ((a.high & 0x7FFF) == 0x7FFF) - && (uint64_t)(aLow << 1) - && (a.low == aLow); + aLow = a.low & ~UINT64_C(0x4000000000000000); + return ((a.high & 0x7FFF) == 0x7FFF) + && (uint64_t)(aLow << 1) + && (a.low == aLow); + } } -#endif } /*---------------------------------------------------------------------------- @@ -941,17 +947,17 @@ floatx80 propagateFloatx80NaN(floatx80 a, floatx80 b, float_status *status) bool float128_is_quiet_nan(float128 a, float_status *status) { -#ifdef NO_SIGNALING_NANS - return float128_is_any_nan(a); -#else - if (snan_bit_is_one(status)) { - return (((a.high >> 47) & 0xFFFF) == 0xFFFE) - && (a.low || (a.high & 0x00007FFFFFFFFFFFULL)); + if (no_signaling_nans(status)) { + return float128_is_any_nan(a); } else { - return ((a.high << 1) >= 0xFFFF000000000000ULL) - && (a.low || (a.high & 0x0000FFFFFFFFFFFFULL)); + if (snan_bit_is_one(status)) { + return (((a.high >> 47) & 0xFFFF) == 0xFFFE) + && (a.low || (a.high & 0x00007FFFFFFFFFFFULL)); + } else { + return ((a.high << 1) >= 0xFFFF000000000000ULL) + && (a.low || (a.high & 0x0000FFFFFFFFFFFFULL)); + } } -#endif } /*---------------------------------------------------------------------------- @@ -961,17 +967,17 @@ bool float128_is_quiet_nan(float128 a, float_status *status) bool float128_is_signaling_nan(float128 a, float_status *status) { -#ifdef NO_SIGNALING_NANS - return 0; -#else - if (snan_bit_is_one(status)) { - return ((a.high << 1) >= 0xFFFF000000000000ULL) - && (a.low || (a.high & 0x0000FFFFFFFFFFFFULL)); + if (no_signaling_nans(status)) { + return 0; } else { - return (((a.high >> 47) & 0xFFFF) == 0xFFFE) - && (a.low || (a.high & UINT64_C(0x00007FFFFFFFFFFF))); + if (snan_bit_is_one(status)) { + return ((a.high << 1) >= 0xFFFF000000000000ULL) + && (a.low || (a.high & 0x0000FFFFFFFFFFFFULL)); + } else { + return (((a.high >> 47) & 0xFFFF) == 0xFFFE) + && (a.low || (a.high & UINT64_C(0x00007FFFFFFFFFFF))); + } } -#endif } /*---------------------------------------------------------------------------- @@ -981,16 +987,16 @@ bool float128_is_signaling_nan(float128 a, float_status *status) float128 float128_silence_nan(float128 a, float_status *status) { -#ifdef NO_SIGNALING_NANS - g_assert_not_reached(); -#else - if (snan_bit_is_one(status)) { - return float128_default_nan(status); + if (no_signaling_nans(status)) { + g_assert_not_reached(); } else { - a.high |= UINT64_C(0x0000800000000000); - return a; + if (snan_bit_is_one(status)) { + return float128_default_nan(status); + } else { + a.high |= UINT64_C(0x0000800000000000); + return a; + } } -#endif } /*---------------------------------------------------------------------------- |