[sim] integrated SoftFloat-3 with ISA sim; removed SoftFloat-2b

[riscv-isa-sim.git] / softfloat / SoftFloat-3 / source / f64_rem.c

diff --git a/softfloat/SoftFloat-3/source/f64_rem.c b/softfloat/SoftFloat-3/source/f64_rem.c
deleted file mode 100755 (executable)
index 08fcd78..0000000
--- a/softfloat/SoftFloat-3/source/f64_rem.c
+++ /dev/null
@@ -1,113 +0,0 @@
-
-#include <stdbool.h>
-#include <stdint.h>
-#include "platform.h"
-#include "primitives.h"
-#include "internals.h"
-#include "specialize.h"
-#include "softfloat.h"
-
-float64_t f64_rem( float64_t a, float64_t b )
-{
-    union ui64_f64 uA;
-    uint_fast64_t uiA;
-    bool signA;
-    int_fast16_t expA;
-    uint_fast64_t sigA;
-    union ui64_f64 uB;
-    uint_fast64_t uiB;
-    bool signB;
-    int_fast16_t expB;
-    uint_fast64_t sigB;
-    struct exp16_sig64 normExpSig;
-    int_fast16_t expDiff;
-    uint_fast64_t q, alternateSigA;
-    uint64_t sigMean;
-    bool signZ;
-    uint_fast64_t uiZ;
-    union ui64_f64 uZ;
-
-    uA.f = a;
-    uiA = uA.ui;
-    signA = signF64UI( uiA );
-    expA = expF64UI( uiA );
-    sigA = fracF64UI( uiA );
-    uB.f = b;
-    uiB = uB.ui;
-    signB = signF64UI( uiB );
-    expB = expF64UI( uiB );
-    sigB = fracF64UI( uiB );
-    if ( expA == 0x7FF ) {
-        if ( sigA || ( ( expB == 0x7FF ) && sigB ) ) goto propagateNaN;
-        goto invalid;
-    }
-    if ( expB == 0x7FF ) {
-        if ( sigB ) goto propagateNaN;
-        return a;
-    }
-    if ( ! expB ) {
-        if ( ! sigB ) goto invalid;
-        normExpSig = softfloat_normSubnormalF64Sig( sigB );
-        expB = normExpSig.exp;
-        sigB = normExpSig.sig;
-    }
-    if ( ! expA ) {
-        if ( ! sigA ) return a;
-        normExpSig = softfloat_normSubnormalF64Sig( sigA );
-        expA = normExpSig.exp;
-        sigA = normExpSig.sig;
-    }
-    expDiff = expA - expB;
-    sigA = ( sigA | UINT64_C( 0x0010000000000000 ) )<<11;
-    sigB = ( sigB | UINT64_C( 0x0010000000000000 ) )<<11;
-    if ( expDiff < 0 ) {
-        if ( expDiff < -1 ) return a;
-        sigA >>= 1;
-    }
-    q = ( sigB <= sigA );
-    if ( q ) sigA -= sigB;
-    expDiff -= 64;
-    while ( 0 < expDiff ) {
-        q = softfloat_estimateDiv128To64( sigA, 0, sigB );
-        q = ( 2 < q ) ? q - 2 : 0;
-        sigA = - ( ( sigB>>2 ) * q );
-        expDiff -= 62;
-    }
-    expDiff += 64;
-    if ( 0 < expDiff ) {
-        q = softfloat_estimateDiv128To64( sigA, 0, sigB );
-        q = ( 2 < q ) ? q - 2 : 0;
-        q >>= 64 - expDiff;
-        sigB >>= 2;
-        sigA = ( ( sigA>>1 )<<( expDiff - 1 ) ) - sigB * q;
-    } else {
-        sigA >>= 2;
-        sigB >>= 2;
-    }
-    do {
-        alternateSigA = sigA;
-        ++q;
-        sigA -= sigB;
-    } while ( sigA < UINT64_C( 0x8000000000000000 ) );
-    sigMean = sigA + alternateSigA;
-    if (
-        ( UINT64_C( 0x8000000000000000 ) <= sigMean )
-            || ( ! sigMean && ( q & 1 ) )
-    ) {
-        sigA = alternateSigA;
-    }
-    signZ = ( UINT64_C( 0x8000000000000000 ) <= sigA );
-    if ( signZ ) sigA = - sigA;
-    return softfloat_normRoundPackToF64( signA ^ signZ, expB, sigA );
- propagateNaN:
-    uiZ = softfloat_propagateNaNF64UI( uiA, uiB );
-    goto uiZ;
- invalid:
-    softfloat_raiseFlags( softfloat_flag_invalid );
-    uiZ = defaultNaNF64UI;
- uiZ:
-    uZ.ui = uiZ;
-    return uZ.f;
-
-}
-