1 files changed, 180 insertions, 0 deletions
diff --git a/src/libs/softfloat-3e/source/f32_div.c b/src/libs/softfloat-3e/source/f32_div.c
new file mode 100644
index 00000000..400f8088
--- /dev/null
+++ b/src/libs/softfloat-3e/source/f32_div.c
@@ -0,0 +1,180 @@
+
+/*============================================================================
+
+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 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"
+
+float32_t f32_div( float32_t a, float32_t b SOFTFLOAT_STATE_DECL_COMMA )
+{
+    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;
+    struct exp16_sig32 normExpSig;
+    int_fast16_t expZ;
+#ifdef SOFTFLOAT_FAST_DIV64TO32
+    uint_fast64_t sig64A;
+    uint_fast32_t sigZ;
+#else
+    uint_fast32_t sigZ;
+    uint_fast64_t rem;
+#endif
+    uint_fast32_t 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 ) goto propagateNaN;
+        if ( expB == 0xFF ) {
+            if ( sigB ) goto propagateNaN;
+            goto invalid;
+        }
+        goto infinity;
+    }
+    if ( expB == 0xFF ) {
+        if ( sigB ) goto propagateNaN;
+        goto zero;
+    }
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    if ( ! expB ) {
+        if ( ! sigB ) {
+            if ( ! (expA | sigA) ) goto invalid;
+            softfloat_raiseFlags( softfloat_flag_infinite SOFTFLOAT_STATE_ARG_COMMA );
+            goto infinity;
+        }
+        normExpSig = softfloat_normSubnormalF32Sig( sigB );
+        expB = normExpSig.exp;
+        sigB = normExpSig.sig;
+    }
+    if ( ! expA ) {
+        if ( ! sigA ) goto zero;
+        normExpSig = softfloat_normSubnormalF32Sig( sigA );
+        expA = normExpSig.exp;
+        sigA = normExpSig.sig;
+    }
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    expZ = expA - expB + 0x7E;
+    sigA |= 0x00800000;
+    sigB |= 0x00800000;
+#ifdef SOFTFLOAT_FAST_DIV64TO32
+    if ( sigA < sigB ) {
+        --expZ;
+        sig64A = (uint_fast64_t) sigA<<31;
+    } else {
+        sig64A = (uint_fast64_t) sigA<<30;
+    }
+    sigZ = sig64A / sigB;
+    if ( ! (sigZ & 0x3F) ) sigZ |= ((uint_fast64_t) sigB * sigZ != sig64A);
+#else
+    if ( sigA < sigB ) {
+        --expZ;
+        sigA <<= 8;
+    } else {
+        sigA <<= 7;
+    }
+    sigB <<= 8;
+    sigZ = ((uint_fast64_t) sigA * softfloat_approxRecip32_1( sigB ))>>32;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    sigZ += 2;
+    if ( (sigZ & 0x3F) < 2 ) {
+        sigZ &= ~3;
+#ifdef SOFTFLOAT_FAST_INT64
+        rem = ((uint_fast64_t) sigA<<31) - (uint_fast64_t) sigZ * sigB;
+#else
+        rem = ((uint_fast64_t) sigA<<32) - (uint_fast64_t) (sigZ<<1) * sigB;
+#endif
+        if ( rem & UINT64_C( 0x8000000000000000 ) ) {
+            sigZ -= 4;
+        } else {
+            if ( rem ) sigZ |= 1;
+        }
+    }
+#endif
+    return softfloat_roundPackToF32( signZ, expZ, sigZ SOFTFLOAT_STATE_ARG_COMMA );
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+ propagateNaN:
+    uiZ = softfloat_propagateNaNF32UI( uiA, uiB SOFTFLOAT_STATE_ARG_COMMA );
+    goto uiZ;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid SOFTFLOAT_STATE_ARG_COMMA );
+    uiZ = defaultNaNF32UI;
+    goto uiZ;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+ infinity:
+    uiZ = packToF32UI( signZ, 0xFF, 0 );
+    goto uiZ;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+ zero:
+    uiZ = packToF32UI( signZ, 0, 0 );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+