From 5cd8d2b93fad2011fdf8f49a263d77697af35b32 Mon Sep 17 00:00:00 2001
From: Andrew Waterman <andrew@sifive.com>
Date: Wed, 11 Jul 2018 01:16:28 -0700
Subject: Upgrade to SoftFloat 3e

---
 softfloat/f128M_to_ui64_r_minMag.c | 114 +++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 softfloat/f128M_to_ui64_r_minMag.c

(limited to 'softfloat/f128M_to_ui64_r_minMag.c')

diff --git a/softfloat/f128M_to_ui64_r_minMag.c b/softfloat/f128M_to_ui64_r_minMag.c
new file mode 100644
index 0000000..dc7e543
--- /dev/null
+++ b/softfloat/f128M_to_ui64_r_minMag.c
@@ -0,0 +1,114 @@
+
+/*============================================================================
+
+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 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
+
+uint_fast64_t f128M_to_ui64_r_minMag( const float128_t *aPtr, bool exact )
+{
+
+    return f128_to_ui64_r_minMag( *aPtr, exact );
+
+}
+
+#else
+
+uint_fast64_t f128M_to_ui64_r_minMag( const float128_t *aPtr, bool exact )
+{
+    const uint32_t *aWPtr;
+    uint32_t uiA96;
+    bool sign;
+    int32_t exp;
+    uint32_t sig96;
+    int32_t shiftDist;
+    uint32_t sig[4];
+    uint64_t z;
+
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    aWPtr = (const uint32_t *) aPtr;
+    uiA96 = aWPtr[indexWordHi( 4 )];
+    sign  = signF128UI96( uiA96 );
+    exp   = expF128UI96( uiA96 );
+    sig96 = fracF128UI96( uiA96 );
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    shiftDist = 0x403E - exp;
+    if ( shiftDist < 0 ) goto invalid;
+    if ( exact ) {
+        if ( exp ) sig96 |= 0x00010000;
+        sig[indexWord( 4, 3 )] = sig96;
+        sig[indexWord( 4, 2 )] = aWPtr[indexWord( 4, 2 )];
+        sig[indexWord( 4, 1 )] = aWPtr[indexWord( 4, 1 )];
+        sig[indexWord( 4, 0 )] = aWPtr[indexWord( 4, 0 )];
+        softfloat_shiftRightJam128M( sig, shiftDist + 17, sig );
+        z = (uint64_t) sig[indexWord( 4, 2 )]<<32 | sig[indexWord( 4, 1 )];
+        if ( sign && z ) goto invalid;
+        if ( sig[indexWordLo( 4 )] ) {
+            softfloat_raiseFlags( softfloat_flag_inexact );
+        }
+    } else {
+        if ( 64 <= shiftDist ) return 0;
+        if ( sign ) goto invalid;
+        z =   UINT64_C( 0x8000000000000000 )
+            | (uint64_t) sig96<<47
+            | (uint64_t) aWPtr[indexWord( 4, 2 )]<<15
+            | aWPtr[indexWord( 4, 1 )]>>17;
+        z >>= shiftDist;
+    }
+    return z;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    return
+        (exp == 0x7FFF)
+            && (sig96
+                    || (aWPtr[indexWord( 4, 2 )] | aWPtr[indexWord( 4, 1 )]
+                            | aWPtr[indexWord( 4, 0 )]))
+            ? ui64_fromNaN
+            : sign ? ui64_fromNegOverflow : ui64_fromPosOverflow;
+
+}
+
+#endif
+
-- 
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