Support debug system bus access.

[riscv-isa-sim.git] / softfloat / s_propagateNaNF64UI.c

diff --git a/softfloat/s_propagateNaNF64UI.c b/softfloat/s_propagateNaNF64UI.c
old mode 100755 (executable)
new mode 100644 (file)
index 871989d..9c2d359
--- a/softfloat/s_propagateNaNF64UI.c
+++ b/softfloat/s_propagateNaNF64UI.c
@@ -1,25 +1,58 @@
 
-/*** UPDATE COMMENTS. ***/
+/*============================================================================
+
+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"
 
 /*----------------------------------------------------------------------------
-| Takes two double-precision floating-point values `a' and `b', one of which
-| is a NaN, and returns the appropriate NaN result.  If either `a' or `b' is a
+| Interpreting `uiA' and `uiB' as the bit patterns of two 64-bit floating-
+| point values, at least one of which is a NaN, returns the bit pattern of
+| the combined NaN result.  If either `uiA' or `uiB' has the pattern of a
 | signaling NaN, the invalid exception is raised.
 *----------------------------------------------------------------------------*/
-
 uint_fast64_t
  softfloat_propagateNaNF64UI( uint_fast64_t uiA, uint_fast64_t uiB )
 {
-    if ( softfloat_isSigNaNF64UI( uiA ) | softfloat_isSigNaNF64UI( uiB ) ) {
+
+    if ( softfloat_isSigNaNF64UI( uiA ) || softfloat_isSigNaNF64UI( uiB ) ) {
         softfloat_raiseFlags( softfloat_flag_invalid );
     }
     return defaultNaNF64UI;
+
 }