From 1e163c715550e20e239976a22e00869884713e54 Mon Sep 17 00:00:00 2001
From: Andrew Waterman <waterman@s141.Millennium.Berkeley.EDU>
Date: Sun, 19 Jun 2011 21:45:58 -0700
Subject: fixed build after repo split

---
 softfloat/s_mulAddF64.c | 188 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 188 insertions(+)
 create mode 100755 softfloat/s_mulAddF64.c

(limited to 'softfloat/s_mulAddF64.c')

diff --git a/softfloat/s_mulAddF64.c b/softfloat/s_mulAddF64.c
new file mode 100755
index 0000000..01ba3b4
--- /dev/null
+++ b/softfloat/s_mulAddF64.c
@@ -0,0 +1,188 @@
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "primitives.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float64_t
+ softfloat_mulAddF64(
+     int op, uint_fast64_t uiA, uint_fast64_t uiB, uint_fast64_t uiC )
+{
+    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 signProd;
+    uint_fast64_t magBits, uiZ;
+    struct exp16_sig64 normExpSig;
+    int_fast16_t expProd;
+    struct uint128 sigProd;
+    bool signZ;
+    int_fast16_t expZ;
+    uint_fast64_t sigZ;
+    int_fast16_t expDiff;
+    struct uint128 sigC128, sigZ128;
+    int shiftCount;
+    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 );
+    signProd = 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;
+    }
+    expProd = expA + expB - 0x3FE;
+    sigA = ( sigA | UINT64_C( 0x0010000000000000 ) )<<10;
+    sigB = ( sigB | UINT64_C( 0x0010000000000000 ) )<<10;
+    sigProd = softfloat_mul64To128( sigA, sigB );
+    if ( sigProd.v64 < UINT64_C( 0x2000000000000000 ) ) {
+        --expProd;
+        sigProd = softfloat_shortShift128Left( sigProd.v64, sigProd.v0, 1 );
+    }
+    signZ = signProd;
+    if ( ! expC ) {
+        if ( ! sigC ) {
+            expZ = expProd - 1;
+            sigZ = sigProd.v64<<1 | ( sigProd.v0 != 0 );
+            goto roundPack;
+        }
+        normExpSig = softfloat_normSubnormalF64Sig( sigC );
+        expC = normExpSig.exp;
+        sigC = normExpSig.sig;
+    }
+    sigC = ( sigC | UINT64_C( 0x0010000000000000 ) )<<9;
+    expDiff = expProd - expC;
+    if ( signProd == signC ) {
+        if ( expDiff <= 0 ) {
+            expZ = expC;
+            if ( expDiff ) {
+                sigProd.v64 =
+                    softfloat_shift64RightJam( sigProd.v64, - expDiff );
+            }
+            sigZ = ( sigC + sigProd.v64 ) | ( sigProd.v0 != 0 );
+        } else {
+            expZ = expProd;
+            sigC128 = softfloat_shift128RightJam( sigC, 0, expDiff );
+            sigZ128 =
+                softfloat_add128(
+                    sigProd.v64, sigProd.v0, sigC128.v64, sigC128.v0 );
+            sigZ = sigZ128.v64 | ( sigZ128.v0 != 0 );
+        }
+        if ( sigZ < UINT64_C( 0x4000000000000000 ) ) {
+            --expZ;
+            sigZ <<= 1;
+        }
+    } else {
+/*** OPTIMIZE BETTER? ***/
+        if ( expDiff < 0 ) {
+            signZ = signC;
+            expZ = expC;
+            sigProd =
+                softfloat_shift128RightJam(
+                    sigProd.v64, sigProd.v0, - expDiff );
+            sigZ128 = softfloat_sub128( sigC, 0, sigProd.v64, sigProd.v0 );
+        } else if ( ! expDiff ) {
+            expZ = expProd;
+            sigZ128 = softfloat_sub128( sigProd.v64, sigProd.v0, sigC, 0 );
+            if ( ! ( sigZ128.v64 | sigZ128.v0 ) ) goto completeCancellation;
+            if ( sigZ128.v64 & UINT64_C( 0x8000000000000000 ) ) {
+                signZ ^= 1;
+                sigZ128 = softfloat_sub128( 0, 0, sigZ128.v64, sigZ128.v0 );
+            }
+        } else {
+            expZ = expProd;
+            sigC128 = softfloat_shift128RightJam( sigC, 0, expDiff );
+            sigZ128 =
+                softfloat_sub128(
+                    sigProd.v64, sigProd.v0, sigC128.v64, sigC128.v0 );
+        }
+        if ( ! sigZ128.v64 ) {
+            expZ -= 64;
+            sigZ128.v64 = sigZ128.v0;
+            sigZ128.v0 = 0;
+        }
+        shiftCount = softfloat_countLeadingZeros64( sigZ128.v64 ) - 1;
+        expZ -= shiftCount;
+        if ( shiftCount < 0 ) {
+            sigZ = softfloat_shortShift64RightJam( sigZ128.v64, - shiftCount );
+        } else {
+            sigZ128 =
+                softfloat_shortShift128Left(
+                    sigZ128.v64, sigZ128.v0, shiftCount );
+            sigZ = sigZ128.v64;
+        }
+        sigZ |= ( sigZ128.v0 != 0 );
+    }
+ roundPack:
+    return softfloat_roundPackToF64( signZ, expZ, sigZ );
+ propagateNaN_ABC:
+    uiZ = softfloat_propagateNaNF64UI( uiA, uiB );
+    goto propagateNaN_ZC;
+ infProdArg:
+    if ( magBits ) {
+        uiZ = packToF64UI( signProd, 0x7FF, 0 );
+        if ( expC != 0x7FF ) goto uiZ;
+        if ( sigC ) goto propagateNaN_ZC;
+        if ( signProd == signC ) goto uiZ;
+    }
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    uiZ = defaultNaNF64UI;
+ propagateNaN_ZC:
+    uiZ = softfloat_propagateNaNF64UI( uiZ, uiC );
+    goto uiZ;
+ zeroProd:
+    uiZ = uiC;
+    if ( ! ( expC | sigC ) && ( signProd != signC ) ) {
+ completeCancellation:
+        uiZ =
+            packToF64UI( softfloat_roundingMode == softfloat_round_min, 0, 0 );
+    }
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
-- 
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