1 files changed, 120 insertions, 0 deletions
diff --git a/source/f32_mul.c b/source/f32_mul.c
new file mode 100644
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+++ b/source/f32_mul.c
@@ -0,0 +1,120 @@
+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3, by John R. Hauser.
+
+Copyright 2011, 2012, 2013, 2014 The Regents of the University of California
+(Regents).  All Rights Reserved.  Redistribution and use in source and binary
+forms, with or without modification, are permitted provided that the following
+conditions are met:
+
+Redistributions of source code must retain the above copyright notice,
+this list of conditions, and the following two paragraphs of disclaimer.
+Redistributions in binary form must reproduce the above copyright notice,
+this list of conditions, and the following two paragraphs of disclaimer in the
+documentation and/or other materials provided with the distribution.  Neither
+the name of the Regents nor the names of its contributors may be used to
+endorse or promote products derived from this software without specific prior
+written permission.
+
+IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
+SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING
+OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
+BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
+HEREUNDER IS PROVIDED "AS IS".  REGENTS HAS NO OBLIGATION TO PROVIDE
+MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+
+=============================================================================*/
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+float32_t f32_mul( float32_t a, float32_t b )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    bool signA;
+    int_fast16_t expA;
+    uint_fast32_t sigA;
+    union ui32_f32 uB;
+    uint_fast32_t uiB;
+    bool signB;
+    int_fast16_t expB;
+    uint_fast32_t sigB;
+    bool signZ;
+    uint_fast32_t magBits;
+    struct exp16_sig32 normExpSig;
+    int_fast16_t expZ;
+    uint_fast32_t sigZ, uiZ;
+    union ui32_f32 uZ;
+
+    uA.f = a;
+    uiA = uA.ui;
+    signA = signF32UI( uiA );
+    expA  = expF32UI( uiA );
+    sigA  = fracF32UI( uiA );
+    uB.f = b;
+    uiB = uB.ui;
+    signB = signF32UI( uiB );
+    expB  = expF32UI( uiB );
+    sigB  = fracF32UI( uiB );
+    signZ = signA ^ signB;
+    if ( expA == 0xFF ) {
+        if ( sigA || ((expB == 0xFF) && sigB) ) goto propagateNaN;
+        magBits = expB | sigB;
+        goto infArg;
+    }
+    if ( expB == 0xFF ) {
+        if ( sigB ) goto propagateNaN;
+        magBits = expA | sigA;
+        goto infArg;
+    }
+    if ( ! expA ) {
+        if ( ! sigA ) goto zero;
+        normExpSig = softfloat_normSubnormalF32Sig( sigA );
+        expA = normExpSig.exp;
+        sigA = normExpSig.sig;
+    }
+    if ( ! expB ) {
+        if ( ! sigB ) goto zero;
+        normExpSig = softfloat_normSubnormalF32Sig( sigB );
+        expB = normExpSig.exp;
+        sigB = normExpSig.sig;
+    }
+    expZ = expA + expB - 0x7F;
+    sigA = (sigA | 0x00800000)<<7;
+    sigB = (sigB | 0x00800000)<<8;
+    sigZ = softfloat_shortShiftRightJam64( (uint_fast64_t) sigA * sigB, 32 );
+    if ( sigZ < 0x40000000 ) {
+        --expZ;
+        sigZ <<= 1;
+    }
+    return softfloat_roundPackToF32( signZ, expZ, sigZ );
+ propagateNaN:
+    uiZ = softfloat_propagateNaNF32UI( uiA, uiB );
+    goto uiZ;
+ infArg:
+    if ( ! magBits ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        uiZ = defaultNaNF32UI;
+    } else {
+        uiZ = packToF32UI( signZ, 0xFF, 0 );
+    }
+    goto uiZ;
+ zero:
+    uiZ = packToF32UI( signZ, 0, 0 );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+