242 lines
10 KiB
C
242 lines
10 KiB
C
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/*============================================================================
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This C header file is part of the SoftFloat IEEE Floating-Point Arithmetic
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Package, Release 3e, by John R. Hauser.
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Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2017 The Regents of the
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University of California. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions, and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions, and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the University nor the names of its contributors may
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be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
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DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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=============================================================================*/
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#ifndef internals_h
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#define internals_h 1
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#include "primitives.h"
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#include "softfloat_types.h"
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#include <stdbool.h>
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#include <stdint.h>
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union ui16_f16 {
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uint16_t ui;
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float16_t f;
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};
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union ui32_f32 {
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uint32_t ui;
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float32_t f;
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};
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union ui64_f64 {
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uint64_t ui;
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float64_t f;
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};
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#ifdef SOFTFLOAT_FAST_INT64
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union extF80M_extF80 {
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struct extFloat80M fM;
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extFloat80_t f;
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};
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union ui128_f128 {
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struct uint128 ui;
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float128_t f;
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};
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#endif
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enum { softfloat_mulAdd_subC = 1, softfloat_mulAdd_subProd = 2 };
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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uint_fast32_t softfloat_roundToUI32(bool, uint_fast64_t, uint_fast8_t, bool);
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#ifdef SOFTFLOAT_FAST_INT64
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uint_fast64_t softfloat_roundToUI64(bool, uint_fast64_t, uint_fast64_t, uint_fast8_t, bool);
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#else
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uint_fast64_t softfloat_roundMToUI64(bool, uint32_t*, uint_fast8_t, bool);
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#endif
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int_fast32_t softfloat_roundToI32(bool, uint_fast64_t, uint_fast8_t, bool);
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#ifdef SOFTFLOAT_FAST_INT64
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int_fast64_t softfloat_roundToI64(bool, uint_fast64_t, uint_fast64_t, uint_fast8_t, bool);
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#else
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int_fast64_t softfloat_roundMToI64(bool, uint32_t*, uint_fast8_t, bool);
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#endif
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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#define signF16UI(a) ((bool)((uint16_t)(a) >> 15))
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#define expF16UI(a) ((int_fast8_t)((a) >> 10) & 0x1F)
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#define fracF16UI(a) ((a)&0x03FF)
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#define packToF16UI(sign, exp, sig) (((uint16_t)(sign) << 15) + ((uint16_t)(exp) << 10) + (sig))
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#define isNaNF16UI(a) (((~(a)&0x7C00) == 0) && ((a)&0x03FF))
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struct exp8_sig16 {
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int_fast8_t exp;
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uint_fast16_t sig;
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};
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struct exp8_sig16 softfloat_normSubnormalF16Sig(uint_fast16_t);
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float16_t softfloat_roundPackToF16(bool, int_fast16_t, uint_fast16_t);
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float16_t softfloat_normRoundPackToF16(bool, int_fast16_t, uint_fast16_t);
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float16_t softfloat_addMagsF16(uint_fast16_t, uint_fast16_t);
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float16_t softfloat_subMagsF16(uint_fast16_t, uint_fast16_t);
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float16_t softfloat_mulAddF16(uint_fast16_t, uint_fast16_t, uint_fast16_t, uint_fast8_t);
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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#define signF32UI(a) ((bool)((uint32_t)(a) >> 31))
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#define expF32UI(a) ((int_fast16_t)((a) >> 23) & 0xFF)
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#define fracF32UI(a) ((a)&0x007FFFFF)
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#define packToF32UI(sign, exp, sig) (((uint32_t)(sign) << 31) + ((uint32_t)(exp) << 23) + (sig))
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#define isNaNF32UI(a) (((~(a)&0x7F800000) == 0) && ((a)&0x007FFFFF))
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struct exp16_sig32 {
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int_fast16_t exp;
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uint_fast32_t sig;
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};
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struct exp16_sig32 softfloat_normSubnormalF32Sig(uint_fast32_t);
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float32_t softfloat_roundPackToF32(bool, int_fast16_t, uint_fast32_t);
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float32_t softfloat_normRoundPackToF32(bool, int_fast16_t, uint_fast32_t);
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float32_t softfloat_addMagsF32(uint_fast32_t, uint_fast32_t);
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float32_t softfloat_subMagsF32(uint_fast32_t, uint_fast32_t);
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float32_t softfloat_mulAddF32(uint_fast32_t, uint_fast32_t, uint_fast32_t, uint_fast8_t);
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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#define signF64UI(a) ((bool)((uint64_t)(a) >> 63))
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#define expF64UI(a) ((int_fast16_t)((a) >> 52) & 0x7FF)
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#define fracF64UI(a) ((a)&UINT64_C(0x000FFFFFFFFFFFFF))
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#define packToF64UI(sign, exp, sig) ((uint64_t)(((uint_fast64_t)(sign) << 63) + ((uint_fast64_t)(exp) << 52) + (sig)))
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#define isNaNF64UI(a) (((~(a)&UINT64_C(0x7FF0000000000000)) == 0) && ((a)&UINT64_C(0x000FFFFFFFFFFFFF)))
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struct exp16_sig64 {
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int_fast16_t exp;
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uint_fast64_t sig;
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};
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struct exp16_sig64 softfloat_normSubnormalF64Sig(uint_fast64_t);
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float64_t softfloat_roundPackToF64(bool, int_fast16_t, uint_fast64_t);
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float64_t softfloat_normRoundPackToF64(bool, int_fast16_t, uint_fast64_t);
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float64_t softfloat_addMagsF64(uint_fast64_t, uint_fast64_t, bool);
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float64_t softfloat_subMagsF64(uint_fast64_t, uint_fast64_t, bool);
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float64_t softfloat_mulAddF64(uint_fast64_t, uint_fast64_t, uint_fast64_t, uint_fast8_t);
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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#define signExtF80UI64(a64) ((bool)((uint16_t)(a64) >> 15))
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#define expExtF80UI64(a64) ((a64)&0x7FFF)
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#define packToExtF80UI64(sign, exp) ((uint_fast16_t)(sign) << 15 | (exp))
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#define isNaNExtF80UI(a64, a0) ((((a64)&0x7FFF) == 0x7FFF) && ((a0)&UINT64_C(0x7FFFFFFFFFFFFFFF)))
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#ifdef SOFTFLOAT_FAST_INT64
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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struct exp32_sig64 {
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int_fast32_t exp;
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uint64_t sig;
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};
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struct exp32_sig64 softfloat_normSubnormalExtF80Sig(uint_fast64_t);
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extFloat80_t softfloat_roundPackToExtF80(bool, int_fast32_t, uint_fast64_t, uint_fast64_t, uint_fast8_t);
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extFloat80_t softfloat_normRoundPackToExtF80(bool, int_fast32_t, uint_fast64_t, uint_fast64_t, uint_fast8_t);
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extFloat80_t softfloat_addMagsExtF80(uint_fast16_t, uint_fast64_t, uint_fast16_t, uint_fast64_t, bool);
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extFloat80_t softfloat_subMagsExtF80(uint_fast16_t, uint_fast64_t, uint_fast16_t, uint_fast64_t, bool);
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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#define signF128UI64(a64) ((bool)((uint64_t)(a64) >> 63))
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#define expF128UI64(a64) ((int_fast32_t)((a64) >> 48) & 0x7FFF)
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#define fracF128UI64(a64) ((a64)&UINT64_C(0x0000FFFFFFFFFFFF))
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#define packToF128UI64(sign, exp, sig64) (((uint_fast64_t)(sign) << 63) + ((uint_fast64_t)(exp) << 48) + (sig64))
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#define isNaNF128UI(a64, a0) (((~(a64)&UINT64_C(0x7FFF000000000000)) == 0) && (a0 || ((a64)&UINT64_C(0x0000FFFFFFFFFFFF))))
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struct exp32_sig128 {
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int_fast32_t exp;
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struct uint128 sig;
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};
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struct exp32_sig128 softfloat_normSubnormalF128Sig(uint_fast64_t, uint_fast64_t);
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float128_t softfloat_roundPackToF128(bool, int_fast32_t, uint_fast64_t, uint_fast64_t, uint_fast64_t);
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float128_t softfloat_normRoundPackToF128(bool, int_fast32_t, uint_fast64_t, uint_fast64_t);
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float128_t softfloat_addMagsF128(uint_fast64_t, uint_fast64_t, uint_fast64_t, uint_fast64_t, bool);
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float128_t softfloat_subMagsF128(uint_fast64_t, uint_fast64_t, uint_fast64_t, uint_fast64_t, bool);
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float128_t softfloat_mulAddF128(uint_fast64_t, uint_fast64_t, uint_fast64_t, uint_fast64_t, uint_fast64_t, uint_fast64_t, uint_fast8_t);
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#else
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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bool softfloat_tryPropagateNaNExtF80M(const struct extFloat80M*, const struct extFloat80M*, struct extFloat80M*);
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void softfloat_invalidExtF80M(struct extFloat80M*);
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int softfloat_normExtF80SigM(uint64_t*);
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void softfloat_roundPackMToExtF80M(bool, int32_t, uint32_t*, uint_fast8_t, struct extFloat80M*);
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void softfloat_normRoundPackMToExtF80M(bool, int32_t, uint32_t*, uint_fast8_t, struct extFloat80M*);
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void softfloat_addExtF80M(const struct extFloat80M*, const struct extFloat80M*, struct extFloat80M*, bool);
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int softfloat_compareNonnormExtF80M(const struct extFloat80M*, const struct extFloat80M*);
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/*----------------------------------------------------------------------------
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*----------------------------------------------------------------------------*/
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#define signF128UI96(a96) ((bool)((uint32_t)(a96) >> 31))
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#define expF128UI96(a96) ((int32_t)((a96) >> 16) & 0x7FFF)
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#define fracF128UI96(a96) ((a96)&0x0000FFFF)
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#define packToF128UI96(sign, exp, sig96) (((uint32_t)(sign) << 31) + ((uint32_t)(exp) << 16) + (sig96))
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bool softfloat_isNaNF128M(const uint32_t*);
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bool softfloat_tryPropagateNaNF128M(const uint32_t*, const uint32_t*, uint32_t*);
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void softfloat_invalidF128M(uint32_t*);
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int softfloat_shiftNormSigF128M(const uint32_t*, uint_fast8_t, uint32_t*);
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void softfloat_roundPackMToF128M(bool, int32_t, uint32_t*, uint32_t*);
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void softfloat_normRoundPackMToF128M(bool, int32_t, uint32_t*, uint32_t*);
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void softfloat_addF128M(const uint32_t*, const uint32_t*, uint32_t*, bool);
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void softfloat_mulAddF128M(const uint32_t*, const uint32_t*, const uint32_t*, uint32_t*, uint_fast8_t);
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#endif
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#endif
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