1 files changed, 99 insertions, 0 deletions
diff --git a/lib/libutils/isoc/arch/arm/softfloat/source/f128M_to_f32.c b/lib/libutils/isoc/arch/arm/softfloat/source/f128M_to_f32.c
new file mode 100644
index 0000000..104e53e
--- /dev/null
+++ b/lib/libutils/isoc/arch/arm/softfloat/source/f128M_to_f32.c
@@ -0,0 +1,99 @@
+
+/*============================================================================
+
+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"
+
+#ifdef SOFTFLOAT_FAST_INT64
+
+float32_t f128M_to_f32( const float128_t *aPtr )
+{
+
+    return f128_to_f32( *aPtr );
+
+}
+
+#else
+
+float32_t f128M_to_f32( const float128_t *aPtr )
+{
+    const uint32_t *aWPtr;
+    uint32_t uiA96;
+    bool sign;
+    int32_t exp;
+    uint64_t sig64;
+    struct commonNaN commonNaN;
+    uint32_t uiZ, sig32;
+    union ui32_f32 uZ;
+
+    aWPtr = (const uint32_t *) aPtr;
+    uiA96 = aWPtr[indexWordHi( 4 )];
+    sign = signF128UI96( uiA96 );
+    exp  = expF128UI96( uiA96 );
+    sig64 =
+        (uint64_t) fracF128UI96( uiA96 )<<32 | aWPtr[indexWord( 4, 2 )]
+            | ((aWPtr[indexWord( 4, 1 )] | aWPtr[indexWord( 4, 0 )]) != 0);
+    if ( exp == 0x7FFF ) {
+        if ( sig64 ) {
+            softfloat_f128MToCommonNaN( aWPtr, &commonNaN );
+            uiZ = softfloat_commonNaNToF32UI( &commonNaN );
+        } else {
+            uiZ = packToF32UI( sign, 0xFF, 0 );
+        }
+        goto uiZ;
+    }
+    sig32 = softfloat_shortShiftRightJam64( sig64, 18 );
+    if ( ! (exp | sig32) ) {
+        uiZ = packToF32UI( sign, 0, 0 );
+        goto uiZ;
+    }
+    exp -= 0x3F81;
+    if ( sizeof (int_fast16_t) < sizeof (int32_t) ) {
+        if ( exp < -0x1000 ) exp = -0x1000;
+    }
+    return softfloat_roundPackToF32( sign, exp, sig32 | 0x40000000 );
+ uiZ:
+    uZ.ui = uiZ;
+    return uZ.f;
+
+}
+
+#endif
+