-\r
-#include <stdbool.h>\r
-#include <stdint.h>\r
-#include "platform.h"\r
-#include "internals.h"\r
-#include "specialize.h"\r
-#include "softfloat.h"\r
-\r
-float64_t f32_to_f64( float32_t a )\r
-{\r
- union ui32_f32 uA;\r
- uint_fast32_t uiA;\r
- bool sign;\r
- int_fast16_t exp;\r
- uint_fast32_t sig;\r
- uint_fast64_t uiZ;\r
- struct exp16_sig32 normExpSig;\r
- union ui64_f64 uZ;\r
-\r
- uA.f = a;\r
- uiA = uA.ui;\r
- sign = signF32UI( uiA );\r
- exp = expF32UI( uiA );\r
- sig = fracF32UI( uiA );\r
- if ( exp == 0xFF ) {\r
- uiZ =\r
- sig ? softfloat_commonNaNToF64UI(\r
- softfloat_f32UIToCommonNaN( uiA ) )\r
- : packToF64UI( sign, 0x7FF, 0 );\r
- goto uiZ;\r
- }\r
- if ( ! exp ) {\r
- if ( ! sig ) {\r
- uiZ = packToF64UI( sign, 0, 0 );\r
- goto uiZ;\r
- }\r
- normExpSig = softfloat_normSubnormalF32Sig( sig );\r
- exp = normExpSig.exp - 1;\r
- sig = normExpSig.sig;\r
- }\r
- uiZ = packToF64UI( sign, exp + 0x380, (uint_fast64_t) sig<<29 );\r
- uiZ:\r
- uZ.ui = uiZ;\r
- return uZ.f;\r
-\r
-}\r
-\r
+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3d, by John R. Hauser.
+
+Copyright 2011, 2012, 2013, 2014, 2015 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"
+
+float64_t f32_to_f64( float32_t a )
+{
+ union ui32_f32 uA;
+ uint_fast32_t uiA;
+ bool sign;
+ int_fast16_t exp;
+ uint_fast32_t frac;
+ struct commonNaN commonNaN;
+ uint_fast64_t uiZ;
+ struct exp16_sig32 normExpSig;
+ union ui64_f64 uZ;
+
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ uA.f = a;
+ uiA = uA.ui;
+ sign = signF32UI( uiA );
+ exp = expF32UI( uiA );
+ frac = fracF32UI( uiA );
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( exp == 0xFF ) {
+ if ( frac ) {
+ softfloat_f32UIToCommonNaN( uiA, &commonNaN );
+ uiZ = softfloat_commonNaNToF64UI( &commonNaN );
+ } else {
+ uiZ = packToF64UI( sign, 0x7FF, 0 );
+ }
+ goto uiZ;
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ if ( ! exp ) {
+ if ( ! frac ) {
+ uiZ = packToF64UI( sign, 0, 0 );
+ goto uiZ;
+ }
+ normExpSig = softfloat_normSubnormalF32Sig( frac );
+ exp = normExpSig.exp - 1;
+ frac = normExpSig.sig;
+ }
+ /*------------------------------------------------------------------------
+ *------------------------------------------------------------------------*/
+ uiZ = packToF64UI( sign, exp + 0x380, (uint_fast64_t) frac<<29 );
+ uiZ:
+ uZ.ui = uiZ;
+ return uZ.f;
+
+}
+