1 files changed, 147 insertions, 0 deletions
diff --git a/lib/libutils/isoc/arch/arm/softfloat/source/extF80_roundToInt.c b/lib/libutils/isoc/arch/arm/softfloat/source/extF80_roundToInt.c
new file mode 100644
index 0000000..b1fa901
--- /dev/null
+++ b/lib/libutils/isoc/arch/arm/softfloat/source/extF80_roundToInt.c
@@ -0,0 +1,147 @@
+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3a, 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"
+
+extFloat80_t
+ extF80_roundToInt( extFloat80_t a, uint_fast8_t roundingMode, bool exact )
+{
+    union { struct extFloat80M s; extFloat80_t f; } uA;
+    uint_fast16_t uiA64, signUI64;
+    int_fast32_t exp;
+    uint_fast64_t sigA;
+    uint_fast16_t uiZ64;
+    uint_fast64_t sigZ;
+    struct exp32_sig64 normExpSig;
+    struct uint128 uiZ;
+    uint_fast64_t lastBitMask, roundBitsMask;
+    union { struct extFloat80M s; extFloat80_t f; } uZ;
+
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    uA.f = a;
+    uiA64 = uA.s.signExp;
+    signUI64 = uiA64 & packToExtF80UI64( 1, 0 );
+    exp = expExtF80UI64( uiA64 );
+    sigA = uA.s.signif;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    if ( ! (sigA & UINT64_C( 0x8000000000000000 )) && (exp != 0x7FFF) ) {
+        if ( ! sigA ) {
+            uiZ64 = signUI64;
+            sigZ = 0;
+            goto uiZ;
+        }
+        normExpSig = softfloat_normSubnormalExtF80Sig( sigA );
+        exp += normExpSig.exp;
+        sigA = normExpSig.sig;
+    }
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    if ( 0x403E <= exp ) {
+        if ( exp == 0x7FFF ) {
+            if ( sigA & UINT64_C( 0x7FFFFFFFFFFFFFFF ) ) {
+                uiZ = softfloat_propagateNaNExtF80UI( uiA64, sigA, 0, 0 );
+                uiZ64 = uiZ.v64;
+                sigZ  = uiZ.v0;
+                goto uiZ;
+            }
+            sigZ = UINT64_C( 0x8000000000000000 );
+        } else {
+            sigZ = sigA;
+        }
+        uiZ64 = signUI64 | exp;
+        goto uiZ;
+    }
+    if ( exp <= 0x3FFE ) {
+        if ( exact ) softfloat_exceptionFlags |= softfloat_flag_inexact;
+        switch ( roundingMode ) {
+         case softfloat_round_near_even:
+            if ( ! (sigA & UINT64_C( 0x7FFFFFFFFFFFFFFF )) ) break;
+         case softfloat_round_near_maxMag:
+            if ( exp == 0x3FFE ) goto mag1;
+            break;
+         case softfloat_round_min:
+            if ( signUI64 ) goto mag1;
+            break;
+         case softfloat_round_max:
+            if ( ! signUI64 ) goto mag1;
+            break;
+        }
+        uiZ64 = signUI64;
+        sigZ  = 0;
+        goto uiZ;
+     mag1:
+        uiZ64 = signUI64 | 0x3FFF;
+        sigZ  = UINT64_C( 0x8000000000000000 );
+        goto uiZ;
+    }
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    uiZ64 = signUI64 | exp;
+    lastBitMask = (uint_fast64_t) 1<<(0x403E - exp);
+    roundBitsMask = lastBitMask - 1;
+    sigZ = sigA;
+    if ( roundingMode == softfloat_round_near_maxMag ) {
+        sigZ += lastBitMask>>1;
+    } else if ( roundingMode == softfloat_round_near_even ) {
+        sigZ += lastBitMask>>1;
+        if ( ! (sigZ & roundBitsMask) ) sigZ &= ~lastBitMask;
+    } else if ( roundingMode != softfloat_round_minMag ) {
+        if ( (signUI64 != 0) ^ (roundingMode == softfloat_round_max) ) {
+            sigZ += roundBitsMask;
+        }
+    }
+    sigZ &= ~roundBitsMask;
+    if ( ! sigZ ) {
+        ++uiZ64;
+        sigZ = UINT64_C( 0x8000000000000000 );
+    }
+    if ( exact && (sigZ != sigA) ) {
+        softfloat_exceptionFlags |= softfloat_flag_inexact;
+    }
+ uiZ:
+    uZ.s.signExp = uiZ64;
+    uZ.s.signif = sigZ;
+    return uZ.f;
+
+}
+