diff options
Diffstat (limited to 'fpu')
| -rw-r--r-- | fpu/softfloat.c | 2 | ||||
| -rw-r--r-- | fpu/softfloat.h | 638 |
2 files changed, 1 insertions, 639 deletions
diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 841314686b..0cfa6b4831 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -40,7 +40,7 @@ these four paragraphs for those parts of this code that are retained. */ #include "config.h" -#include "softfloat.h" +#include "fpu/softfloat.h" /*---------------------------------------------------------------------------- | Primitive arithmetic functions, including multi-word arithmetic, and diff --git a/fpu/softfloat.h b/fpu/softfloat.h deleted file mode 100644 index 0946f0739d..0000000000 --- a/fpu/softfloat.h +++ /dev/null @@ -1,638 +0,0 @@ -/* - * QEMU float support - * - * Derived from SoftFloat. - */ - -/*============================================================================ - -This C header file is part of the SoftFloat IEC/IEEE Floating-point Arithmetic -Package, Release 2b. - -Written by John R. Hauser. This work was made possible in part by the -International Computer Science Institute, located at Suite 600, 1947 Center -Street, Berkeley, California 94704. Funding was partially provided by the -National Science Foundation under grant MIP-9311980. The original version -of this code was written as part of a project to build a fixed-point vector -processor in collaboration with the University of California at Berkeley, -overseen by Profs. Nelson Morgan and John Wawrzynek. More information -is available through the Web page `http://www.cs.berkeley.edu/~jhauser/ -arithmetic/SoftFloat.html'. - -THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort has -been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT TIMES -RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO PERSONS -AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ALL LOSSES, -COSTS, OR OTHER PROBLEMS THEY INCUR DUE TO THE SOFTWARE, AND WHO FURTHERMORE -EFFECTIVELY INDEMNIFY JOHN HAUSER AND THE INTERNATIONAL COMPUTER SCIENCE -INSTITUTE (possibly via similar legal warning) AGAINST ALL LOSSES, COSTS, OR -OTHER PROBLEMS INCURRED BY THEIR CUSTOMERS AND CLIENTS DUE TO THE SOFTWARE. - -Derivative works are acceptable, even for commercial purposes, so long as -(1) the source code for the derivative work includes prominent notice that -the work is derivative, and (2) the source code includes prominent notice with -these four paragraphs for those parts of this code that are retained. - -=============================================================================*/ - -#ifndef SOFTFLOAT_H -#define SOFTFLOAT_H - -#if defined(CONFIG_SOLARIS) && defined(CONFIG_NEEDS_LIBSUNMATH) -#include <sunmath.h> -#endif - -#include <inttypes.h> -#include "config-host.h" -#include "qemu/osdep.h" - -/*---------------------------------------------------------------------------- -| Each of the following `typedef's defines the most convenient type that holds -| integers of at least as many bits as specified. For example, `uint8' should -| be the most convenient type that can hold unsigned integers of as many as -| 8 bits. The `flag' type must be able to hold either a 0 or 1. For most -| implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed -| to the same as `int'. -*----------------------------------------------------------------------------*/ -typedef uint8_t flag; -typedef uint8_t uint8; -typedef int8_t int8; -typedef unsigned int uint32; -typedef signed int int32; -typedef uint64_t uint64; -typedef int64_t int64; - -#define LIT64( a ) a##LL -#define INLINE static inline - -#define STATUS_PARAM , float_status *status -#define STATUS(field) status->field -#define STATUS_VAR , status - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE floating-point ordering relations -*----------------------------------------------------------------------------*/ -enum { - float_relation_less = -1, - float_relation_equal = 0, - float_relation_greater = 1, - float_relation_unordered = 2 -}; - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE floating-point types. -*----------------------------------------------------------------------------*/ -/* Use structures for soft-float types. This prevents accidentally mixing - them with native int/float types. A sufficiently clever compiler and - sane ABI should be able to see though these structs. However - x86/gcc 3.x seems to struggle a bit, so leave them disabled by default. */ -//#define USE_SOFTFLOAT_STRUCT_TYPES -#ifdef USE_SOFTFLOAT_STRUCT_TYPES -typedef struct { - uint16_t v; -} float16; -#define float16_val(x) (((float16)(x)).v) -#define make_float16(x) __extension__ ({ float16 f16_val = {x}; f16_val; }) -#define const_float16(x) { x } -typedef struct { - uint32_t v; -} float32; -/* The cast ensures an error if the wrong type is passed. */ -#define float32_val(x) (((float32)(x)).v) -#define make_float32(x) __extension__ ({ float32 f32_val = {x}; f32_val; }) -#define const_float32(x) { x } -typedef struct { - uint64_t v; -} float64; -#define float64_val(x) (((float64)(x)).v) -#define make_float64(x) __extension__ ({ float64 f64_val = {x}; f64_val; }) -#define const_float64(x) { x } -#else -typedef uint16_t float16; -typedef uint32_t float32; -typedef uint64_t float64; -#define float16_val(x) (x) -#define float32_val(x) (x) -#define float64_val(x) (x) -#define make_float16(x) (x) -#define make_float32(x) (x) -#define make_float64(x) (x) -#define const_float16(x) (x) -#define const_float32(x) (x) -#define const_float64(x) (x) -#endif -typedef struct { - uint64_t low; - uint16_t high; -} floatx80; -#define make_floatx80(exp, mant) ((floatx80) { mant, exp }) -#define make_floatx80_init(exp, mant) { .low = mant, .high = exp } -typedef struct { -#ifdef HOST_WORDS_BIGENDIAN - uint64_t high, low; -#else - uint64_t low, high; -#endif -} float128; -#define make_float128(high_, low_) ((float128) { .high = high_, .low = low_ }) -#define make_float128_init(high_, low_) { .high = high_, .low = low_ } - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE floating-point underflow tininess-detection mode. -*----------------------------------------------------------------------------*/ -enum { - float_tininess_after_rounding = 0, - float_tininess_before_rounding = 1 -}; - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE floating-point rounding mode. -*----------------------------------------------------------------------------*/ -enum { - float_round_nearest_even = 0, - float_round_down = 1, - float_round_up = 2, - float_round_to_zero = 3 -}; - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE floating-point exception flags. -*----------------------------------------------------------------------------*/ -enum { - float_flag_invalid = 1, - float_flag_divbyzero = 4, - float_flag_overflow = 8, - float_flag_underflow = 16, - float_flag_inexact = 32, - float_flag_input_denormal = 64, - float_flag_output_denormal = 128 -}; - -typedef struct float_status { - signed char float_detect_tininess; - signed char float_rounding_mode; - signed char float_exception_flags; - signed char floatx80_rounding_precision; - /* should denormalised results go to zero and set the inexact flag? */ - flag flush_to_zero; - /* should denormalised inputs go to zero and set the input_denormal flag? */ - flag flush_inputs_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_float_detect_tininess(int val STATUS_PARAM) -{ - STATUS(float_detect_tininess) = val; -} -INLINE void set_flush_to_zero(flag val STATUS_PARAM) -{ - STATUS(flush_to_zero) = val; -} -INLINE void set_flush_inputs_to_zero(flag val STATUS_PARAM) -{ - STATUS(flush_inputs_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); -} -void set_floatx80_rounding_precision(int val STATUS_PARAM); - -/*---------------------------------------------------------------------------- -| Routine to raise any or all of the software IEC/IEEE floating-point -| exception flags. -*----------------------------------------------------------------------------*/ -void float_raise( int8 flags STATUS_PARAM); - -/*---------------------------------------------------------------------------- -| Options to indicate which negations to perform in float*_muladd() -| Using these differs from negating an input or output before calling -| the muladd function in that this means that a NaN doesn't have its -| sign bit inverted before it is propagated. -*----------------------------------------------------------------------------*/ -enum { - float_muladd_negate_c = 1, - float_muladd_negate_product = 2, - float_muladd_negate_result = 4, -}; - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE integer-to-floating-point conversion routines. -*----------------------------------------------------------------------------*/ -float32 int32_to_float32( int32 STATUS_PARAM ); -float64 int32_to_float64( int32 STATUS_PARAM ); -float32 uint32_to_float32( uint32 STATUS_PARAM ); -float64 uint32_to_float64( uint32 STATUS_PARAM ); -floatx80 int32_to_floatx80( int32 STATUS_PARAM ); -float128 int32_to_float128( int32 STATUS_PARAM ); -float32 int64_to_float32( int64 STATUS_PARAM ); -float32 uint64_to_float32( uint64 STATUS_PARAM ); -float64 int64_to_float64( int64 STATUS_PARAM ); -float64 uint64_to_float64( uint64 STATUS_PARAM ); -floatx80 int64_to_floatx80( int64 STATUS_PARAM ); -float128 int64_to_float128( int64 STATUS_PARAM ); - -/*---------------------------------------------------------------------------- -| Software half-precision conversion routines. -*----------------------------------------------------------------------------*/ -float16 float32_to_float16( float32, flag STATUS_PARAM ); -float32 float16_to_float32( float16, flag STATUS_PARAM ); - -/*---------------------------------------------------------------------------- -| Software half-precision operations. -*----------------------------------------------------------------------------*/ -int float16_is_quiet_nan( float16 ); -int float16_is_signaling_nan( float16 ); -float16 float16_maybe_silence_nan( float16 ); - -INLINE int float16_is_any_nan(float16 a) -{ - return ((float16_val(a) & ~0x8000) > 0x7c00); -} - -/*---------------------------------------------------------------------------- -| The pattern for a default generated half-precision NaN. -*----------------------------------------------------------------------------*/ -extern const float16 float16_default_nan; - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE single-precision conversion routines. -*----------------------------------------------------------------------------*/ -int_fast16_t float32_to_int16_round_to_zero(float32 STATUS_PARAM); -uint_fast16_t float32_to_uint16_round_to_zero(float32 STATUS_PARAM); -int32 float32_to_int32( float32 STATUS_PARAM ); -int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM ); -uint32 float32_to_uint32( float32 STATUS_PARAM ); -uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM ); -int64 float32_to_int64( float32 STATUS_PARAM ); -int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM ); -float64 float32_to_float64( float32 STATUS_PARAM ); -floatx80 float32_to_floatx80( float32 STATUS_PARAM ); -float128 float32_to_float128( float32 STATUS_PARAM ); - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE single-precision operations. -*----------------------------------------------------------------------------*/ -float32 float32_round_to_int( float32 STATUS_PARAM ); -float32 float32_add( float32, float32 STATUS_PARAM ); -float32 float32_sub( float32, float32 STATUS_PARAM ); -float32 float32_mul( float32, float32 STATUS_PARAM ); -float32 float32_div( float32, float32 STATUS_PARAM ); -float32 float32_rem( float32, float32 STATUS_PARAM ); -float32 float32_muladd(float32, float32, float32, int STATUS_PARAM); -float32 float32_sqrt( float32 STATUS_PARAM ); -float32 float32_exp2( 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 ); -int float32_unordered( float32, float32 STATUS_PARAM ); -int float32_eq_quiet( float32, float32 STATUS_PARAM ); -int float32_le_quiet( float32, float32 STATUS_PARAM ); -int float32_lt_quiet( float32, float32 STATUS_PARAM ); -int float32_unordered_quiet( float32, float32 STATUS_PARAM ); -int float32_compare( float32, float32 STATUS_PARAM ); -int float32_compare_quiet( float32, float32 STATUS_PARAM ); -float32 float32_min(float32, float32 STATUS_PARAM); -float32 float32_max(float32, float32 STATUS_PARAM); -int float32_is_quiet_nan( float32 ); -int float32_is_signaling_nan( float32 ); -float32 float32_maybe_silence_nan( float32 ); -float32 float32_scalbn( float32, int STATUS_PARAM ); - -INLINE float32 float32_abs(float32 a) -{ - /* Note that abs does *not* handle NaN specially, nor does - * it flush denormal inputs to zero. - */ - return make_float32(float32_val(a) & 0x7fffffff); -} - -INLINE float32 float32_chs(float32 a) -{ - /* Note that chs does *not* handle NaN specially, nor does - * it flush denormal inputs to zero. - */ - 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; -} - -INLINE int float32_is_any_nan(float32 a) -{ - return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); -} - -INLINE int float32_is_zero_or_denormal(float32 a) -{ - return (float32_val(a) & 0x7f800000) == 0; -} - -INLINE float32 float32_set_sign(float32 a, int sign) -{ - return make_float32((float32_val(a) & 0x7fffffff) | (sign << 31)); -} - -#define float32_zero make_float32(0) -#define float32_one make_float32(0x3f800000) -#define float32_ln2 make_float32(0x3f317218) -#define float32_pi make_float32(0x40490fdb) -#define float32_half make_float32(0x3f000000) -#define float32_infinity make_float32(0x7f800000) - - -/*---------------------------------------------------------------------------- -| The pattern for a default generated single-precision NaN. -*----------------------------------------------------------------------------*/ -extern const float32 float32_default_nan; - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE double-precision conversion routines. -*----------------------------------------------------------------------------*/ -int_fast16_t float64_to_int16_round_to_zero(float64 STATUS_PARAM); -uint_fast16_t float64_to_uint16_round_to_zero(float64 STATUS_PARAM); -int32 float64_to_int32( float64 STATUS_PARAM ); -int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM ); -uint32 float64_to_uint32( float64 STATUS_PARAM ); -uint32 float64_to_uint32_round_to_zero( float64 STATUS_PARAM ); -int64 float64_to_int64( float64 STATUS_PARAM ); -int64 float64_to_int64_round_to_zero( float64 STATUS_PARAM ); -uint64 float64_to_uint64 (float64 a STATUS_PARAM); -uint64 float64_to_uint64_round_to_zero (float64 a STATUS_PARAM); -float32 float64_to_float32( float64 STATUS_PARAM ); -floatx80 float64_to_floatx80( float64 STATUS_PARAM ); -float128 float64_to_float128( float64 STATUS_PARAM ); - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE double-precision operations. -*----------------------------------------------------------------------------*/ -float64 float64_round_to_int( float64 STATUS_PARAM ); -float64 float64_trunc_to_int( float64 STATUS_PARAM ); -float64 float64_add( float64, float64 STATUS_PARAM ); -float64 float64_sub( float64, float64 STATUS_PARAM ); -float64 float64_mul( float64, float64 STATUS_PARAM ); -float64 float64_div( float64, float64 STATUS_PARAM ); -float64 float64_rem( float64, float64 STATUS_PARAM ); -float64 float64_muladd(float64, float64, float64, int 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 ); -int float64_unordered( float64, float64 STATUS_PARAM ); -int float64_eq_quiet( float64, float64 STATUS_PARAM ); -int float64_le_quiet( float64, float64 STATUS_PARAM ); -int float64_lt_quiet( float64, float64 STATUS_PARAM ); -int float64_unordered_quiet( float64, float64 STATUS_PARAM ); -int float64_compare( float64, float64 STATUS_PARAM ); -int float64_compare_quiet( float64, float64 STATUS_PARAM ); -float64 float64_min(float64, float64 STATUS_PARAM); -float64 float64_max(float64, float64 STATUS_PARAM); -int float64_is_quiet_nan( float64 a ); -int float64_is_signaling_nan( float64 ); -float64 float64_maybe_silence_nan( float64 ); -float64 float64_scalbn( float64, int STATUS_PARAM ); - -INLINE float64 float64_abs(float64 a) -{ - /* Note that abs does *not* handle NaN specially, nor does - * it flush denormal inputs to zero. - */ - return make_float64(float64_val(a) & 0x7fffffffffffffffLL); -} - -INLINE float64 float64_chs(float64 a) -{ - /* Note that chs does *not* handle NaN specially, nor does - * it flush denormal inputs to zero. - */ - 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; -} - -INLINE int float64_is_any_nan(float64 a) -{ - return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); -} - -INLINE int float64_is_zero_or_denormal(float64 a) -{ - return (float64_val(a) & 0x7ff0000000000000LL) == 0; -} - -INLINE float64 float64_set_sign(float64 a, int sign) -{ - return make_float64((float64_val(a) & 0x7fffffffffffffffULL) - | ((int64_t)sign << 63)); -} - -#define float64_zero make_float64(0) -#define float64_one make_float64(0x3ff0000000000000LL) -#define float64_ln2 make_float64(0x3fe62e42fefa39efLL) -#define float64_pi make_float64(0x400921fb54442d18LL) -#define float64_half make_float64(0x3fe0000000000000LL) -#define float64_infinity make_float64(0x7ff0000000000000LL) - -/*---------------------------------------------------------------------------- -| The pattern for a default generated double-precision NaN. -*----------------------------------------------------------------------------*/ -extern const float64 float64_default_nan; - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE extended double-precision conversion routines. -*----------------------------------------------------------------------------*/ -int32 floatx80_to_int32( floatx80 STATUS_PARAM ); -int32 floatx80_to_int32_round_to_zero( floatx80 STATUS_PARAM ); -int64 floatx80_to_int64( floatx80 STATUS_PARAM ); -int64 floatx80_to_int64_round_to_zero( floatx80 STATUS_PARAM ); -float32 floatx80_to_float32( floatx80 STATUS_PARAM ); -float64 floatx80_to_float64( floatx80 STATUS_PARAM ); -float128 floatx80_to_float128( floatx80 STATUS_PARAM ); - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE extended double-precision operations. -*----------------------------------------------------------------------------*/ -floatx80 floatx80_round_to_int( floatx80 STATUS_PARAM ); -floatx80 floatx80_add( floatx80, floatx80 STATUS_PARAM ); -floatx80 floatx80_sub( floatx80, floatx80 STATUS_PARAM ); -floatx80 floatx80_mul( floatx80, floatx80 STATUS_PARAM ); -floatx80 floatx80_div( floatx80, floatx80 STATUS_PARAM ); -floatx80 floatx80_rem( floatx80, floatx80 STATUS_PARAM ); -floatx80 floatx80_sqrt( floatx80 STATUS_PARAM ); -int floatx80_eq( floatx80, floatx80 STATUS_PARAM ); -int floatx80_le( floatx80, floatx80 STATUS_PARAM ); -int floatx80_lt( floatx80, floatx80 STATUS_PARAM ); -int floatx80_unordered( floatx80, floatx80 STATUS_PARAM ); -int floatx80_eq_quiet( floatx80, floatx80 STATUS_PARAM ); -int floatx80_le_quiet( floatx80, floatx80 STATUS_PARAM ); -int floatx80_lt_quiet( floatx80, floatx80 STATUS_PARAM ); -int floatx80_unordered_quiet( floatx80, floatx80 STATUS_PARAM ); -int floatx80_compare( floatx80, floatx80 STATUS_PARAM ); -int floatx80_compare_quiet( floatx80, floatx80 STATUS_PARAM ); -int floatx80_is_quiet_nan( floatx80 ); -int floatx80_is_signaling_nan( floatx80 ); -floatx80 floatx80_maybe_silence_nan( floatx80 ); -floatx80 floatx80_scalbn( floatx80, int STATUS_PARAM ); - -INLINE floatx80 floatx80_abs(floatx80 a) -{ - a.high &= 0x7fff; - return a; -} - -INLINE floatx80 floatx80_chs(floatx80 a) -{ - a.high ^= 0x8000; - return a; -} - -INLINE int floatx80_is_infinity(floatx80 a) -{ - return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL; -} - -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; -} - -INLINE int floatx80_is_zero_or_denormal(floatx80 a) -{ - return (a.high & 0x7fff) == 0; -} - -INLINE int floatx80_is_any_nan(floatx80 a) -{ - return ((a.high & 0x7fff) == 0x7fff) && (a.low<<1); -} - -#define floatx80_zero make_floatx80(0x0000, 0x0000000000000000LL) -#define floatx80_one make_floatx80(0x3fff, 0x8000000000000000LL) -#define floatx80_ln2 make_floatx80(0x3ffe, 0xb17217f7d1cf79acLL) -#define floatx80_pi make_floatx80(0x4000, 0xc90fdaa22168c235LL) -#define floatx80_half make_floatx80(0x3ffe, 0x8000000000000000LL) -#define floatx80_infinity make_floatx80(0x7fff, 0x8000000000000000LL) - -/*---------------------------------------------------------------------------- -| The pattern for a default generated extended double-precision NaN. -*----------------------------------------------------------------------------*/ -extern const floatx80 floatx80_default_nan; - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE quadruple-precision conversion routines. -*----------------------------------------------------------------------------*/ -int32 float128_to_int32( float128 STATUS_PARAM ); -int32 float128_to_int32_round_to_zero( float128 STATUS_PARAM ); -int64 float128_to_int64( float128 STATUS_PARAM ); -int64 float128_to_int64_round_to_zero( float128 STATUS_PARAM ); -float32 float128_to_float32( float128 STATUS_PARAM ); -float64 float128_to_float64( float128 STATUS_PARAM ); -floatx80 float128_to_floatx80( float128 STATUS_PARAM ); - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE quadruple-precision operations. -*----------------------------------------------------------------------------*/ -float128 float128_round_to_int( float128 STATUS_PARAM ); -float128 float128_add( float128, float128 STATUS_PARAM ); -float128 float128_sub( float128, float128 STATUS_PARAM ); -float128 float128_mul( float128, float128 STATUS_PARAM ); -float128 float128_div( float128, float128 STATUS_PARAM ); -float128 float128_rem( float128, float128 STATUS_PARAM ); -float128 float128_sqrt( float128 STATUS_PARAM ); -int float128_eq( float128, float128 STATUS_PARAM ); -int float128_le( float128, float128 STATUS_PARAM ); -int float128_lt( float128, float128 STATUS_PARAM ); -int float128_unordered( float128, float128 STATUS_PARAM ); -int float128_eq_quiet( float128, float128 STATUS_PARAM ); -int float128_le_quiet( float128, float128 STATUS_PARAM ); -int float128_lt_quiet( float128, float128 STATUS_PARAM ); -int float128_unordered_quiet( float128, float128 STATUS_PARAM ); -int float128_compare( float128, float128 STATUS_PARAM ); -int float128_compare_quiet( float128, float128 STATUS_PARAM ); -int float128_is_quiet_nan( float128 ); -int float128_is_signaling_nan( float128 ); -float128 float128_maybe_silence_nan( float128 ); -float128 float128_scalbn( float128, int STATUS_PARAM ); - -INLINE float128 float128_abs(float128 a) -{ - a.high &= 0x7fffffffffffffffLL; - return a; -} - -INLINE float128 float128_chs(float128 a) -{ - a.high ^= 0x8000000000000000LL; - 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; -} - -INLINE int float128_is_zero_or_denormal(float128 a) -{ - return (a.high & 0x7fff000000000000LL) == 0; -} - -INLINE int float128_is_any_nan(float128 a) -{ - return ((a.high >> 48) & 0x7fff) == 0x7fff && - ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0)); -} - -/*---------------------------------------------------------------------------- -| The pattern for a default generated quadruple-precision NaN. -*----------------------------------------------------------------------------*/ -extern const float128 float128_default_nan; - -#endif /* !SOFTFLOAT_H */ |