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Diffstat (limited to 'qemu/include/fpu/softfloat.h')
| -rw-r--r-- | qemu/include/fpu/softfloat.h | 749 |
1 files changed, 0 insertions, 749 deletions
diff --git a/qemu/include/fpu/softfloat.h b/qemu/include/fpu/softfloat.h deleted file mode 100644 index c93706253..000000000 --- a/qemu/include/fpu/softfloat.h +++ /dev/null @@ -1,749 +0,0 @@ -/* - * QEMU float support - * - * The code in this source file is derived from release 2a of the SoftFloat - * IEC/IEEE Floating-point Arithmetic Package. Those parts of the code (and - * some later contributions) are provided under that license, as detailed below. - * It has subsequently been modified by contributors to the QEMU Project, - * so some portions are provided under: - * the SoftFloat-2a license - * the BSD license - * GPL-v2-or-later - * - * Any future contributions to this file after December 1st 2014 will be - * taken to be licensed under the Softfloat-2a license unless specifically - * indicated otherwise. - */ - -/* -=============================================================================== -This C header file is part of the SoftFloat IEC/IEEE Floating-point -Arithmetic Package, Release 2a. - -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://HTTP.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 ANY -AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE. - -Derivative works are acceptable, even for commercial purposes, so long as -(1) they include prominent notice that the work is derivative, and (2) they -include prominent notice akin to these four paragraphs for those parts of -this code that are retained. - -=============================================================================== -*/ - -/* BSD licensing: - * Copyright (c) 2006, Fabrice Bellard - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * 3. Neither the name of the copyright holder nor the names of its contributors - * may be used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* Portions of this work are licensed under the terms of the GNU GPL, - * version 2 or later. See the COPYING file in the top-level directory. - */ - -#ifndef SOFTFLOAT_H -#define SOFTFLOAT_H - -#if defined(CONFIG_SOLARIS) && defined(CONFIG_NEEDS_LIBSUNMATH) -#include <sunmath.h> -#endif - - -/* This 'flag' type must be able to hold at least 0 and 1. It should - * probably be replaced with 'bool' but the uses would need to be audited - * to check that they weren't accidentally relying on it being a larger type. - */ -typedef uint8_t flag; - -#define LIT64( a ) a##LL - -/*---------------------------------------------------------------------------- -| 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, - float_round_ties_away = 4, -}; - -/*---------------------------------------------------------------------------- -| 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; - -static inline void set_float_detect_tininess(int val, float_status *status) -{ - status->float_detect_tininess = val; -} -static inline void set_float_rounding_mode(int val, float_status *status) -{ - status->float_rounding_mode = val; -} -static inline void set_float_exception_flags(int val, float_status *status) -{ - status->float_exception_flags = val; -} -static inline void set_floatx80_rounding_precision(int val, - float_status *status) -{ - status->floatx80_rounding_precision = val; -} -static inline void set_flush_to_zero(flag val, float_status *status) -{ - status->flush_to_zero = val; -} -static inline void set_flush_inputs_to_zero(flag val, float_status *status) -{ - status->flush_inputs_to_zero = val; -} -static inline void set_default_nan_mode(flag val, float_status *status) -{ - status->default_nan_mode = val; -} -static inline int get_float_detect_tininess(float_status *status) -{ - return status->float_detect_tininess; -} -static inline int get_float_rounding_mode(float_status *status) -{ - return status->float_rounding_mode; -} -static inline int get_float_exception_flags(float_status *status) -{ - return status->float_exception_flags; -} -static inline int get_floatx80_rounding_precision(float_status *status) -{ - return status->floatx80_rounding_precision; -} -static inline flag get_flush_to_zero(float_status *status) -{ - return status->flush_to_zero; -} -static inline flag get_flush_inputs_to_zero(float_status *status) -{ - return status->flush_inputs_to_zero; -} -static inline flag get_default_nan_mode(float_status *status) -{ - return status->default_nan_mode; -} - -/*---------------------------------------------------------------------------- -| Routine to raise any or all of the software IEC/IEEE floating-point -| exception flags. -*----------------------------------------------------------------------------*/ -void float_raise(int8_t flags, float_status *status); - -/*---------------------------------------------------------------------------- -| If `a' is denormal and we are in flush-to-zero mode then set the -| input-denormal exception and return zero. Otherwise just return the value. -*----------------------------------------------------------------------------*/ -float32 float32_squash_input_denormal(float32 a, float_status *status); -float64 float64_squash_input_denormal(float64 a, float_status *status); - -/*---------------------------------------------------------------------------- -| 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. -| We also support halving the result before rounding, as a special -| case to support the ARM fused-sqrt-step instruction FRSQRTS. -*----------------------------------------------------------------------------*/ -enum { - float_muladd_negate_c = 1, - float_muladd_negate_product = 2, - float_muladd_negate_result = 4, - float_muladd_halve_result = 8, -}; - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE integer-to-floating-point conversion routines. -*----------------------------------------------------------------------------*/ -float32 int32_to_float32(int32_t, float_status *status); -float64 int32_to_float64(int32_t, float_status *status); -float32 uint32_to_float32(uint32_t, float_status *status); -float64 uint32_to_float64(uint32_t, float_status *status); -floatx80 int32_to_floatx80(int32_t, float_status *status); -float128 int32_to_float128(int32_t, float_status *status); -float32 int64_to_float32(int64_t, float_status *status); -float64 int64_to_float64(int64_t, float_status *status); -floatx80 int64_to_floatx80(int64_t, float_status *status); -float128 int64_to_float128(int64_t, float_status *status); -float32 uint64_to_float32(uint64_t, float_status *status); -float64 uint64_to_float64(uint64_t, float_status *status); -float128 uint64_to_float128(uint64_t, float_status *status); - -/* We provide the int16 versions for symmetry of API with float-to-int */ -static inline float32 int16_to_float32(int16_t v, float_status *status) -{ - return int32_to_float32(v, status); -} - -static inline float32 uint16_to_float32(uint16_t v, float_status *status) -{ - return uint32_to_float32(v, status); -} - -static inline float64 int16_to_float64(int16_t v, float_status *status) -{ - return int32_to_float64(v, status); -} - -static inline float64 uint16_to_float64(uint16_t v, float_status *status) -{ - return uint32_to_float64(v, status); -} - -/*---------------------------------------------------------------------------- -| Software half-precision conversion routines. -*----------------------------------------------------------------------------*/ -float16 float32_to_float16(float32, flag, float_status *status); -float32 float16_to_float32(float16, flag, float_status *status); -float16 float64_to_float16(float64 a, flag ieee, float_status *status); -float64 float16_to_float64(float16 a, flag ieee, float_status *status); - -/*---------------------------------------------------------------------------- -| Software half-precision operations. -*----------------------------------------------------------------------------*/ -int float16_is_quiet_nan( float16 ); -int float16_is_signaling_nan( float16 ); -float16 float16_maybe_silence_nan( float16 ); - -static 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. -*----------------------------------------------------------------------------*/ -int16_t float32_to_int16(float32, float_status *status); -uint16_t float32_to_uint16(float32, float_status *status); -int16_t float32_to_int16_round_to_zero(float32, float_status *status); -uint16_t float32_to_uint16_round_to_zero(float32, float_status *status); -int32_t float32_to_int32(float32, float_status *status); -int32_t float32_to_int32_round_to_zero(float32, float_status *status); -uint32_t float32_to_uint32(float32, float_status *status); -uint32_t float32_to_uint32_round_to_zero(float32, float_status *status); -int64_t float32_to_int64(float32, float_status *status); -uint64_t float32_to_uint64(float32, float_status *status); -uint64_t float32_to_uint64_round_to_zero(float32, float_status *status); -int64_t float32_to_int64_round_to_zero(float32, float_status *status); -float64 float32_to_float64(float32, float_status *status); -floatx80 float32_to_floatx80(float32, float_status *status); -float128 float32_to_float128(float32, float_status *status); - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE single-precision operations. -*----------------------------------------------------------------------------*/ -float32 float32_round_to_int(float32, float_status *status); -float32 float32_add(float32, float32, float_status *status); -float32 float32_sub(float32, float32, float_status *status); -float32 float32_mul(float32, float32, float_status *status); -float32 float32_div(float32, float32, float_status *status); -float32 float32_rem(float32, float32, float_status *status); -float32 float32_muladd(float32, float32, float32, int, float_status *status); -float32 float32_sqrt(float32, float_status *status); -float32 float32_exp2(float32, float_status *status); -float32 float32_log2(float32, float_status *status); -int float32_eq(float32, float32, float_status *status); -int float32_le(float32, float32, float_status *status); -int float32_lt(float32, float32, float_status *status); -int float32_unordered(float32, float32, float_status *status); -int float32_eq_quiet(float32, float32, float_status *status); -int float32_le_quiet(float32, float32, float_status *status); -int float32_lt_quiet(float32, float32, float_status *status); -int float32_unordered_quiet(float32, float32, float_status *status); -int float32_compare(float32, float32, float_status *status); -int float32_compare_quiet(float32, float32, float_status *status); -float32 float32_min(float32, float32, float_status *status); -float32 float32_max(float32, float32, float_status *status); -float32 float32_minnum(float32, float32, float_status *status); -float32 float32_maxnum(float32, float32, float_status *status); -float32 float32_minnummag(float32, float32, float_status *status); -float32 float32_maxnummag(float32, float32, float_status *status); -int float32_is_quiet_nan( float32 ); -int float32_is_signaling_nan( float32 ); -float32 float32_maybe_silence_nan( float32 ); -float32 float32_scalbn(float32, int, float_status *status); - -static 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); -} - -static 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); -} - -static inline int float32_is_infinity(float32 a) -{ - return (float32_val(a) & 0x7fffffff) == 0x7f800000; -} - -static inline int float32_is_neg(float32 a) -{ - return float32_val(a) >> 31; -} - -static inline int float32_is_zero(float32 a) -{ - return (float32_val(a) & 0x7fffffff) == 0; -} - -static inline int float32_is_any_nan(float32 a) -{ - return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); -} - -static inline int float32_is_zero_or_denormal(float32 a) -{ - return (float32_val(a) & 0x7f800000) == 0; -} - -static 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. -*----------------------------------------------------------------------------*/ -int16_t float64_to_int16(float64, float_status *status); -uint16_t float64_to_uint16(float64, float_status *status); -int16_t float64_to_int16_round_to_zero(float64, float_status *status); -uint16_t float64_to_uint16_round_to_zero(float64, float_status *status); -int32_t float64_to_int32(float64, float_status *status); -int32_t float64_to_int32_round_to_zero(float64, float_status *status); -uint32_t float64_to_uint32(float64, float_status *status); -uint32_t float64_to_uint32_round_to_zero(float64, float_status *status); -int64_t float64_to_int64(float64, float_status *status); -int64_t float64_to_int64_round_to_zero(float64, float_status *status); -uint64_t float64_to_uint64(float64 a, float_status *status); -uint64_t float64_to_uint64_round_to_zero(float64 a, float_status *status); -float32 float64_to_float32(float64, float_status *status); -floatx80 float64_to_floatx80(float64, float_status *status); -float128 float64_to_float128(float64, float_status *status); - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE double-precision operations. -*----------------------------------------------------------------------------*/ -float64 float64_round_to_int(float64, float_status *status); -float64 float64_trunc_to_int(float64, float_status *status); -float64 float64_add(float64, float64, float_status *status); -float64 float64_sub(float64, float64, float_status *status); -float64 float64_mul(float64, float64, float_status *status); -float64 float64_div(float64, float64, float_status *status); -float64 float64_rem(float64, float64, float_status *status); -float64 float64_muladd(float64, float64, float64, int, float_status *status); -float64 float64_sqrt(float64, float_status *status); -float64 float64_log2(float64, float_status *status); -int float64_eq(float64, float64, float_status *status); -int float64_le(float64, float64, float_status *status); -int float64_lt(float64, float64, float_status *status); -int float64_unordered(float64, float64, float_status *status); -int float64_eq_quiet(float64, float64, float_status *status); -int float64_le_quiet(float64, float64, float_status *status); -int float64_lt_quiet(float64, float64, float_status *status); -int float64_unordered_quiet(float64, float64, float_status *status); -int float64_compare(float64, float64, float_status *status); -int float64_compare_quiet(float64, float64, float_status *status); -float64 float64_min(float64, float64, float_status *status); -float64 float64_max(float64, float64, float_status *status); -float64 float64_minnum(float64, float64, float_status *status); -float64 float64_maxnum(float64, float64, float_status *status); -float64 float64_minnummag(float64, float64, float_status *status); -float64 float64_maxnummag(float64, float64, float_status *status); -int float64_is_quiet_nan( float64 a ); -int float64_is_signaling_nan( float64 ); -float64 float64_maybe_silence_nan( float64 ); -float64 float64_scalbn(float64, int, float_status *status); - -static 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); -} - -static 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); -} - -static inline int float64_is_infinity(float64 a) -{ - return (float64_val(a) & 0x7fffffffffffffffLL ) == 0x7ff0000000000000LL; -} - -static inline int float64_is_neg(float64 a) -{ - return float64_val(a) >> 63; -} - -static inline int float64_is_zero(float64 a) -{ - return (float64_val(a) & 0x7fffffffffffffffLL) == 0; -} - -static inline int float64_is_any_nan(float64 a) -{ - return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); -} - -static inline int float64_is_zero_or_denormal(float64 a) -{ - return (float64_val(a) & 0x7ff0000000000000LL) == 0; -} - -static 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_t floatx80_to_int32(floatx80, float_status *status); -int32_t floatx80_to_int32_round_to_zero(floatx80, float_status *status); -int64_t floatx80_to_int64(floatx80, float_status *status); -int64_t floatx80_to_int64_round_to_zero(floatx80, float_status *status); -float32 floatx80_to_float32(floatx80, float_status *status); -float64 floatx80_to_float64(floatx80, float_status *status); -float128 floatx80_to_float128(floatx80, float_status *status); - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE extended double-precision operations. -*----------------------------------------------------------------------------*/ -floatx80 floatx80_round_to_int(floatx80, float_status *status); -floatx80 floatx80_add(floatx80, floatx80, float_status *status); -floatx80 floatx80_sub(floatx80, floatx80, float_status *status); -floatx80 floatx80_mul(floatx80, floatx80, float_status *status); -floatx80 floatx80_div(floatx80, floatx80, float_status *status); -floatx80 floatx80_rem(floatx80, floatx80, float_status *status); -floatx80 floatx80_sqrt(floatx80, float_status *status); -int floatx80_eq(floatx80, floatx80, float_status *status); -int floatx80_le(floatx80, floatx80, float_status *status); -int floatx80_lt(floatx80, floatx80, float_status *status); -int floatx80_unordered(floatx80, floatx80, float_status *status); -int floatx80_eq_quiet(floatx80, floatx80, float_status *status); -int floatx80_le_quiet(floatx80, floatx80, float_status *status); -int floatx80_lt_quiet(floatx80, floatx80, float_status *status); -int floatx80_unordered_quiet(floatx80, floatx80, float_status *status); -int floatx80_compare(floatx80, floatx80, float_status *status); -int floatx80_compare_quiet(floatx80, floatx80, float_status *status); -int floatx80_is_quiet_nan( floatx80 ); -int floatx80_is_signaling_nan( floatx80 ); -floatx80 floatx80_maybe_silence_nan( floatx80 ); -floatx80 floatx80_scalbn(floatx80, int, float_status *status); - -static inline floatx80 floatx80_abs(floatx80 a) -{ - a.high &= 0x7fff; - return a; -} - -static inline floatx80 floatx80_chs(floatx80 a) -{ - a.high ^= 0x8000; - return a; -} - -static inline int floatx80_is_infinity(floatx80 a) -{ - return (a.high & 0x7fff) == 0x7fff && a.low == 0x8000000000000000LL; -} - -static inline int floatx80_is_neg(floatx80 a) -{ - return a.high >> 15; -} - -static inline int floatx80_is_zero(floatx80 a) -{ - return (a.high & 0x7fff) == 0 && a.low == 0; -} - -static inline int floatx80_is_zero_or_denormal(floatx80 a) -{ - return (a.high & 0x7fff) == 0; -} - -static 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_t float128_to_int32(float128, float_status *status); -int32_t float128_to_int32_round_to_zero(float128, float_status *status); -int64_t float128_to_int64(float128, float_status *status); -int64_t float128_to_int64_round_to_zero(float128, float_status *status); -float32 float128_to_float32(float128, float_status *status); -float64 float128_to_float64(float128, float_status *status); -floatx80 float128_to_floatx80(float128, float_status *status); - -/*---------------------------------------------------------------------------- -| Software IEC/IEEE quadruple-precision operations. -*----------------------------------------------------------------------------*/ -float128 float128_round_to_int(float128, float_status *status); -float128 float128_add(float128, float128, float_status *status); -float128 float128_sub(float128, float128, float_status *status); -float128 float128_mul(float128, float128, float_status *status); -float128 float128_div(float128, float128, float_status *status); -float128 float128_rem(float128, float128, float_status *status); -float128 float128_sqrt(float128, float_status *status); -int float128_eq(float128, float128, float_status *status); -int float128_le(float128, float128, float_status *status); -int float128_lt(float128, float128, float_status *status); -int float128_unordered(float128, float128, float_status *status); -int float128_eq_quiet(float128, float128, float_status *status); -int float128_le_quiet(float128, float128, float_status *status); -int float128_lt_quiet(float128, float128, float_status *status); -int float128_unordered_quiet(float128, float128, float_status *status); -int float128_compare(float128, float128, float_status *status); -int float128_compare_quiet(float128, float128, float_status *status); -int float128_is_quiet_nan( float128 ); -int float128_is_signaling_nan( float128 ); -float128 float128_maybe_silence_nan( float128 ); -float128 float128_scalbn(float128, int, float_status *status); - -static inline float128 float128_abs(float128 a) -{ - a.high &= 0x7fffffffffffffffLL; - return a; -} - -static inline float128 float128_chs(float128 a) -{ - a.high ^= 0x8000000000000000LL; - return a; -} - -static inline int float128_is_infinity(float128 a) -{ - return (a.high & 0x7fffffffffffffffLL) == 0x7fff000000000000LL && a.low == 0; -} - -static inline int float128_is_neg(float128 a) -{ - return a.high >> 63; -} - -static inline int float128_is_zero(float128 a) -{ - return (a.high & 0x7fffffffffffffffLL) == 0 && a.low == 0; -} - -static inline int float128_is_zero_or_denormal(float128 a) -{ - return (a.high & 0x7fff000000000000LL) == 0; -} - -static inline int float128_is_any_nan(float128 a) -{ - return ((a.high >> 48) & 0x7fff) == 0x7fff && - ((a.low != 0) || ((a.high & 0xffffffffffffLL) != 0)); -} - -#define float128_zero make_float128(0, 0) - -/*---------------------------------------------------------------------------- -| The pattern for a default generated quadruple-precision NaN. -*----------------------------------------------------------------------------*/ -extern const float128 float128_default_nan; - -#endif /* !SOFTFLOAT_H */ |