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-rw-r--r--src/libs/softfloat-3e/source/s_mulAddF64.c496
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diff --git a/src/libs/softfloat-3e/source/s_mulAddF64.c b/src/libs/softfloat-3e/source/s_mulAddF64.c
new file mode 100644
index 00000000..ae7d6456
--- /dev/null
+++ b/src/libs/softfloat-3e/source/s_mulAddF64.c
@@ -0,0 +1,496 @@
+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3e, by John R. Hauser.
+
+Copyright 2011, 2012, 2013, 2014, 2015, 2016 The Regents of the University of
+California. 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 University 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 REGENTS 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 REGENTS 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.
+
+=============================================================================*/
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+#ifdef SOFTFLOAT_FAST_INT64
+
+float64_t
+ softfloat_mulAddF64(
+ uint_fast64_t uiA, uint_fast64_t uiB, uint_fast64_t uiC, uint_fast8_t op SOFTFLOAT_STATE_DECL_COMMA )
+{
+ bool signA;
+ int_fast16_t expA;
+ uint_fast64_t sigA;
+ bool signB;
+ int_fast16_t expB;
+ uint_fast64_t sigB;
+ bool signC;
+ int_fast16_t expC;
+ uint_fast64_t sigC;
+ bool signZ;
+ uint_fast64_t magBits, uiZ;
+ struct exp16_sig64 normExpSig;
+ int_fast16_t expZ;
+ struct uint128 sig128Z;
+ uint_fast64_t sigZ;
+ int_fast16_t expDiff;
+ struct uint128 sig128C = { 0, 0 }; /* vbox: shut up MSC warning*/
+ int_fast8_t shiftDist;
+ union ui64_f64 uZ;
+
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ signA = signF64UI( uiA );
+ expA = expF64UI( uiA );
+ sigA = fracF64UI( uiA );
+ signB = signF64UI( uiB );
+ expB = expF64UI( uiB );
+ sigB = fracF64UI( uiB );
+ signC = signF64UI( uiC ) ^ (op == softfloat_mulAdd_subC);
+ expC = expF64UI( uiC );
+ sigC = fracF64UI( uiC );
+ signZ = signA ^ signB ^ (op == softfloat_mulAdd_subProd);
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( expA == 0x7FF ) {
+ if ( sigA || ((expB == 0x7FF) && sigB) ) goto propagateNaN_ABC;
+ magBits = expB | sigB;
+ goto infProdArg;
+ }
+ if ( expB == 0x7FF ) {
+ if ( sigB ) goto propagateNaN_ABC;
+ magBits = expA | sigA;
+ goto infProdArg;
+ }
+ if ( expC == 0x7FF ) {
+ if ( sigC ) {
+ uiZ = 0;
+ goto propagateNaN_ZC;
+ }
+ uiZ = uiC;
+ goto uiZ;
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( ! expA ) {
+ if ( ! sigA ) goto zeroProd;
+ normExpSig = softfloat_normSubnormalF64Sig( sigA );
+ expA = normExpSig.exp;
+ sigA = normExpSig.sig;
+ }
+ if ( ! expB ) {
+ if ( ! sigB ) goto zeroProd;
+ normExpSig = softfloat_normSubnormalF64Sig( sigB );
+ expB = normExpSig.exp;
+ sigB = normExpSig.sig;
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ expZ = expA + expB - 0x3FE;
+ sigA = (sigA | UINT64_C( 0x0010000000000000 ))<<10;
+ sigB = (sigB | UINT64_C( 0x0010000000000000 ))<<10;
+ sig128Z = softfloat_mul64To128( sigA, sigB );
+ if ( sig128Z.v64 < UINT64_C( 0x2000000000000000 ) ) {
+ --expZ;
+ sig128Z =
+ softfloat_add128(
+ sig128Z.v64, sig128Z.v0, sig128Z.v64, sig128Z.v0 );
+ }
+ if ( ! expC ) {
+ if ( ! sigC ) {
+ --expZ;
+ sigZ = sig128Z.v64<<1 | (sig128Z.v0 != 0);
+ goto roundPack;
+ }
+ normExpSig = softfloat_normSubnormalF64Sig( sigC );
+ expC = normExpSig.exp;
+ sigC = normExpSig.sig;
+ }
+ sigC = (sigC | UINT64_C( 0x0010000000000000 ))<<9;
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ expDiff = expZ - expC;
+ if ( expDiff < 0 ) {
+ expZ = expC;
+ if ( (signZ == signC) || (expDiff < -1) ) {
+ sig128Z.v64 = softfloat_shiftRightJam64( sig128Z.v64, -expDiff );
+ } else {
+ sig128Z =
+ softfloat_shortShiftRightJam128( sig128Z.v64, sig128Z.v0, 1 );
+ }
+ } else if ( expDiff ) {
+ sig128C = softfloat_shiftRightJam128( sigC, 0, expDiff );
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( signZ == signC ) {
+ /*--------------------------------------------------------------------
+ *--------------------------------------------------------------------*/
+ if ( expDiff <= 0 ) {
+ sigZ = (sigC + sig128Z.v64) | (sig128Z.v0 != 0);
+ } else {
+ sig128Z =
+ softfloat_add128(
+ sig128Z.v64, sig128Z.v0, sig128C.v64, sig128C.v0 );
+ sigZ = sig128Z.v64 | (sig128Z.v0 != 0);
+ }
+ if ( sigZ < UINT64_C( 0x4000000000000000 ) ) {
+ --expZ;
+ sigZ <<= 1;
+ }
+ } else {
+ /*--------------------------------------------------------------------
+ *--------------------------------------------------------------------*/
+ if ( expDiff < 0 ) {
+ signZ = signC;
+ sig128Z = softfloat_sub128( sigC, 0, sig128Z.v64, sig128Z.v0 );
+ } else if ( ! expDiff ) {
+ sig128Z.v64 = sig128Z.v64 - sigC;
+ if ( ! (sig128Z.v64 | sig128Z.v0) ) goto completeCancellation;
+ if ( sig128Z.v64 & UINT64_C( 0x8000000000000000 ) ) {
+ signZ = ! signZ;
+ sig128Z = softfloat_sub128( 0, 0, sig128Z.v64, sig128Z.v0 );
+ }
+ } else {
+ sig128Z =
+ softfloat_sub128(
+ sig128Z.v64, sig128Z.v0, sig128C.v64, sig128C.v0 );
+ }
+ /*--------------------------------------------------------------------
+ *--------------------------------------------------------------------*/
+ if ( ! sig128Z.v64 ) {
+ expZ -= 64;
+ sig128Z.v64 = sig128Z.v0;
+ sig128Z.v0 = 0;
+ }
+ shiftDist = softfloat_countLeadingZeros64( sig128Z.v64 ) - 1;
+ expZ -= shiftDist;
+ if ( shiftDist < 0 ) {
+ sigZ = softfloat_shortShiftRightJam64( sig128Z.v64, -shiftDist );
+ } else {
+ sig128Z =
+ softfloat_shortShiftLeft128(
+ sig128Z.v64, sig128Z.v0, shiftDist );
+ sigZ = sig128Z.v64;
+ }
+ sigZ |= (sig128Z.v0 != 0);
+ }
+ roundPack:
+ return softfloat_roundPackToF64( signZ, expZ, sigZ SOFTFLOAT_STATE_ARG_COMMA );
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ propagateNaN_ABC:
+ uiZ = softfloat_propagateNaNF64UI( uiA, uiB SOFTFLOAT_STATE_ARG_COMMA );
+ goto propagateNaN_ZC;
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ infProdArg:
+ if ( magBits ) {
+ uiZ = packToF64UI( signZ, 0x7FF, 0 );
+ if ( expC != 0x7FF ) goto uiZ;
+ if ( sigC ) goto propagateNaN_ZC;
+ if ( signZ == signC ) goto uiZ;
+ }
+ softfloat_raiseFlags( softfloat_flag_invalid SOFTFLOAT_STATE_ARG_COMMA );
+ uiZ = defaultNaNF64UI;
+ propagateNaN_ZC:
+ uiZ = softfloat_propagateNaNF64UI( uiZ, uiC SOFTFLOAT_STATE_ARG_COMMA );
+ goto uiZ;
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ zeroProd:
+ uiZ = uiC;
+ if ( ! (expC | sigC) && (signZ != signC) ) {
+ completeCancellation:
+ uiZ =
+ packToF64UI(
+ (softfloat_roundingMode == softfloat_round_min), 0, 0 );
+ }
+ uiZ:
+ uZ.ui = uiZ;
+ return uZ.f;
+
+}
+
+#else
+
+float64_t
+ softfloat_mulAddF64(
+ uint_fast64_t uiA, uint_fast64_t uiB, uint_fast64_t uiC, uint_fast8_t op SOFTFLOAT_STATE_DECL_COMMA )
+{
+ bool signA;
+ int_fast16_t expA;
+ uint64_t sigA;
+ bool signB;
+ int_fast16_t expB;
+ uint64_t sigB;
+ bool signC;
+ int_fast16_t expC;
+ uint64_t sigC;
+ bool signZ;
+ uint64_t magBits, uiZ;
+ struct exp16_sig64 normExpSig;
+ int_fast16_t expZ;
+ uint32_t sig128Z[4];
+ uint64_t sigZ;
+ int_fast16_t shiftDist, expDiff;
+ uint32_t sig128C[4];
+ union ui64_f64 uZ;
+
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ signA = signF64UI( uiA );
+ expA = expF64UI( uiA );
+ sigA = fracF64UI( uiA );
+ signB = signF64UI( uiB );
+ expB = expF64UI( uiB );
+ sigB = fracF64UI( uiB );
+ signC = signF64UI( uiC ) ^ (op == softfloat_mulAdd_subC);
+ expC = expF64UI( uiC );
+ sigC = fracF64UI( uiC );
+ signZ = signA ^ signB ^ (op == softfloat_mulAdd_subProd);
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( expA == 0x7FF ) {
+ if ( sigA || ((expB == 0x7FF) && sigB) ) goto propagateNaN_ABC;
+ magBits = expB | sigB;
+ goto infProdArg;
+ }
+ if ( expB == 0x7FF ) {
+ if ( sigB ) goto propagateNaN_ABC;
+ magBits = expA | sigA;
+ goto infProdArg;
+ }
+ if ( expC == 0x7FF ) {
+ if ( sigC ) {
+ uiZ = 0;
+ goto propagateNaN_ZC;
+ }
+ uiZ = uiC;
+ goto uiZ;
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( ! expA ) {
+ if ( ! sigA ) goto zeroProd;
+ normExpSig = softfloat_normSubnormalF64Sig( sigA );
+ expA = normExpSig.exp;
+ sigA = normExpSig.sig;
+ }
+ if ( ! expB ) {
+ if ( ! sigB ) goto zeroProd;
+ normExpSig = softfloat_normSubnormalF64Sig( sigB );
+ expB = normExpSig.exp;
+ sigB = normExpSig.sig;
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ expZ = expA + expB - 0x3FE;
+ sigA = (sigA | UINT64_C( 0x0010000000000000 ))<<10;
+ sigB = (sigB | UINT64_C( 0x0010000000000000 ))<<11;
+ softfloat_mul64To128M( sigA, sigB, sig128Z );
+ sigZ =
+ (uint64_t) sig128Z[indexWord( 4, 3 )]<<32 | sig128Z[indexWord( 4, 2 )];
+ shiftDist = 0;
+ if ( ! (sigZ & UINT64_C( 0x4000000000000000 )) ) {
+ --expZ;
+ shiftDist = -1;
+ }
+ if ( ! expC ) {
+ if ( ! sigC ) {
+ if ( shiftDist ) sigZ <<= 1;
+ goto sigZ;
+ }
+ normExpSig = softfloat_normSubnormalF64Sig( sigC );
+ expC = normExpSig.exp;
+ sigC = normExpSig.sig;
+ }
+ sigC = (sigC | UINT64_C( 0x0010000000000000 ))<<10;
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ expDiff = expZ - expC;
+ if ( expDiff < 0 ) {
+ expZ = expC;
+ if ( (signZ == signC) || (expDiff < -1) ) {
+ shiftDist -= expDiff;
+ if ( shiftDist) {
+ sigZ = softfloat_shiftRightJam64( sigZ, shiftDist );
+ }
+ } else {
+ if ( ! shiftDist ) {
+ softfloat_shortShiftRight128M( sig128Z, 1, sig128Z );
+ }
+ }
+ } else {
+ if ( shiftDist ) softfloat_add128M( sig128Z, sig128Z, sig128Z );
+ if ( ! expDiff ) {
+ sigZ =
+ (uint64_t) sig128Z[indexWord( 4, 3 )]<<32
+ | sig128Z[indexWord( 4, 2 )];
+ } else {
+ sig128C[indexWord( 4, 3 )] = sigC>>32;
+ sig128C[indexWord( 4, 2 )] = sigC;
+ sig128C[indexWord( 4, 1 )] = 0;
+ sig128C[indexWord( 4, 0 )] = 0;
+ softfloat_shiftRightJam128M( sig128C, expDiff, sig128C );
+ }
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( signZ == signC ) {
+ /*--------------------------------------------------------------------
+ *--------------------------------------------------------------------*/
+ if ( expDiff <= 0 ) {
+ sigZ += sigC;
+ } else {
+ softfloat_add128M( sig128Z, sig128C, sig128Z );
+ sigZ =
+ (uint64_t) sig128Z[indexWord( 4, 3 )]<<32
+ | sig128Z[indexWord( 4, 2 )];
+ }
+ if ( sigZ & UINT64_C( 0x8000000000000000 ) ) {
+ ++expZ;
+ sigZ = softfloat_shortShiftRightJam64( sigZ, 1 );
+ }
+ } else {
+ /*--------------------------------------------------------------------
+ *--------------------------------------------------------------------*/
+ if ( expDiff < 0 ) {
+ signZ = signC;
+ if ( expDiff < -1 ) {
+ sigZ = sigC - sigZ;
+ if (
+ sig128Z[indexWord( 4, 1 )] || sig128Z[indexWord( 4, 0 )]
+ ) {
+ sigZ = (sigZ - 1) | 1;
+ }
+ if ( ! (sigZ & UINT64_C( 0x4000000000000000 )) ) {
+ --expZ;
+ sigZ <<= 1;
+ }
+ goto roundPack;
+ } else {
+ sig128C[indexWord( 4, 3 )] = sigC>>32;
+ sig128C[indexWord( 4, 2 )] = sigC;
+ sig128C[indexWord( 4, 1 )] = 0;
+ sig128C[indexWord( 4, 0 )] = 0;
+ softfloat_sub128M( sig128C, sig128Z, sig128Z );
+ }
+ } else if ( ! expDiff ) {
+ sigZ -= sigC;
+ if (
+ ! sigZ && ! sig128Z[indexWord( 4, 1 )]
+ && ! sig128Z[indexWord( 4, 0 )]
+ ) {
+ goto completeCancellation;
+ }
+ sig128Z[indexWord( 4, 3 )] = sigZ>>32;
+ sig128Z[indexWord( 4, 2 )] = sigZ;
+ if ( sigZ & UINT64_C( 0x8000000000000000 ) ) {
+ signZ = ! signZ;
+ softfloat_negX128M( sig128Z );
+ }
+ } else {
+ softfloat_sub128M( sig128Z, sig128C, sig128Z );
+ if ( 1 < expDiff ) {
+ sigZ =
+ (uint64_t) sig128Z[indexWord( 4, 3 )]<<32
+ | sig128Z[indexWord( 4, 2 )];
+ if ( ! (sigZ & UINT64_C( 0x4000000000000000 )) ) {
+ --expZ;
+ sigZ <<= 1;
+ }
+ goto sigZ;
+ }
+ }
+ /*--------------------------------------------------------------------
+ *--------------------------------------------------------------------*/
+ shiftDist = 0;
+ sigZ =
+ (uint64_t) sig128Z[indexWord( 4, 3 )]<<32
+ | sig128Z[indexWord( 4, 2 )];
+ if ( ! sigZ ) {
+ shiftDist = 64;
+ sigZ =
+ (uint64_t) sig128Z[indexWord( 4, 1 )]<<32
+ | sig128Z[indexWord( 4, 0 )];
+ }
+ shiftDist += softfloat_countLeadingZeros64( sigZ ) - 1;
+ if ( shiftDist ) {
+ expZ -= shiftDist;
+ softfloat_shiftLeft128M( sig128Z, shiftDist, sig128Z );
+ sigZ =
+ (uint64_t) sig128Z[indexWord( 4, 3 )]<<32
+ | sig128Z[indexWord( 4, 2 )];
+ }
+ }
+ sigZ:
+ if ( sig128Z[indexWord( 4, 1 )] || sig128Z[indexWord( 4, 0 )] ) sigZ |= 1;
+ roundPack:
+ return softfloat_roundPackToF64( signZ, expZ - 1, sigZ SOFTFLOAT_STATE_ARG_COMMA );
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ propagateNaN_ABC:
+ uiZ = softfloat_propagateNaNF64UI( uiA, uiB SOFTFLOAT_STATE_ARG_COMMA );
+ goto propagateNaN_ZC;
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ infProdArg:
+ if ( magBits ) {
+ uiZ = packToF64UI( signZ, 0x7FF, 0 );
+ if ( expC != 0x7FF ) goto uiZ;
+ if ( sigC ) goto propagateNaN_ZC;
+ if ( signZ == signC ) goto uiZ;
+ }
+ softfloat_raiseFlags( softfloat_flag_invalid SOFTFLOAT_STATE_ARG_COMMA );
+ uiZ = defaultNaNF64UI;
+ propagateNaN_ZC:
+ uiZ = softfloat_propagateNaNF64UI( uiZ, uiC SOFTFLOAT_STATE_ARG_COMMA );
+ goto uiZ;
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ zeroProd:
+ uiZ = uiC;
+ if ( ! (expC | sigC) && (signZ != signC) ) {
+ completeCancellation:
+ uiZ =
+ packToF64UI(
+ (softfloat_roundingMode == softfloat_round_min), 0, 0 );
+ }
+ uiZ:
+ uZ.ui = uiZ;
+ return uZ.f;
+
+}
+
+#endif
+
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