Set tval to 0 on traps with no specified tval

[riscv-isa-sim.git] / softfloat / ui32_to_f32.c

diff --git a/softfloat/ui32_to_f32.c b/softfloat/ui32_to_f32.c
old mode 100755 (executable)
new mode 100644 (file)
index ba0fc1a..7e5ece6
--- a/softfloat/ui32_to_f32.c
+++ b/softfloat/ui32_to_f32.c
@@ -1,25 +1,57 @@
-\r
-#include <stdint.h>\r
-#include "platform.h"\r
-#include "primitives.h"\r
-#include "internals.h"\r
-#include "softfloat.h"\r
-\r
-float32_t ui32_to_f32( uint_fast32_t a )\r
-{\r
-    union ui32_f32 uZ;\r
-\r
-    if ( ! a ) {\r
-        uZ.ui = 0;\r
-        return uZ.f;\r
-    }\r
-    if ( a & 0x80000000 ) {\r
-        return\r
-            softfloat_roundPackToF32(\r
-                0, 0x9D, softfloat_shortShift32Right1Jam( a ) );\r
-    } else {\r
-        return softfloat_normRoundPackToF32( 0, 0x9C, a );\r
-    }\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 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 <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+float32_t ui32_to_f32( uint32_t a )
+{
+    union ui32_f32 uZ;
+
+    if ( ! a ) {
+        uZ.ui = 0;
+        return uZ.f;
+    }
+    if ( a & 0x80000000 ) {
+        return softfloat_roundPackToF32( 0, 0x9D, a>>1 | (a & 1) );
+    } else {
+        return softfloat_normRoundPackToF32( 0, 0x9C, a );
+    }
+
+}
+