1 files changed, 84 insertions, 0 deletions
diff --git a/src/libs/softfloat-3e/source/8086/s_propagateNaNF16UI.c b/src/libs/softfloat-3e/source/8086/s_propagateNaNF16UI.c
new file mode 100644
index 00000000..f6f82b01
--- /dev/null
+++ b/src/libs/softfloat-3e/source/8086/s_propagateNaNF16UI.c
@@ -0,0 +1,84 @@
+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3e, by John R. Hauser.
+
+Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2018 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"
+
+/*----------------------------------------------------------------------------
+| Interpreting 'uiA' and 'uiB' as the bit patterns of two 16-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_fast16_t
+ softfloat_propagateNaNF16UI( uint_fast16_t uiA, uint_fast16_t uiB SOFTFLOAT_STATE_DECL_COMMA )
+{
+    bool isSigNaNA, isSigNaNB;
+    uint_fast16_t uiNonsigA, uiNonsigB, uiMagA, uiMagB;
+
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    isSigNaNA = softfloat_isSigNaNF16UI( uiA );
+    isSigNaNB = softfloat_isSigNaNF16UI( uiB );
+    /*------------------------------------------------------------------------
+    | Make NaNs non-signaling.
+    *------------------------------------------------------------------------*/
+    uiNonsigA = uiA | 0x0200;
+    uiNonsigB = uiB | 0x0200;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    if ( isSigNaNA | isSigNaNB ) {
+        softfloat_raiseFlags( softfloat_flag_invalid SOFTFLOAT_STATE_ARG_COMMA );
+        if ( isSigNaNA ) {
+            if ( isSigNaNB ) goto returnLargerMag;
+            return isNaNF16UI( uiB ) ? uiNonsigB : uiNonsigA;
+        } else {
+            return isNaNF16UI( uiA ) ? uiNonsigA : uiNonsigB;
+        }
+    }
+ returnLargerMag:
+    uiMagA = uiA & 0x7FFF;
+    uiMagB = uiB & 0x7FFF;
+    if ( uiMagA < uiMagB ) return uiNonsigB;
+    if ( uiMagB < uiMagA ) return uiNonsigA;
+    return (uiNonsigA < uiNonsigB) ? uiNonsigA : uiNonsigB;
+
+}
+