Upgrade to SoftFloat 3e

1 files changed, 96 insertions, 52 deletions

diff --git a/softfloat/f64_to_i32_r_minMag.c b/softfloat/f64_to_i32_r_minMag.c
index 00b270b..126e068 100755..100644
--- a/softfloat/f64_to_i32_r_minMag.c
+++ b/softfloat/f64_to_i32_r_minMag.c
@@ -1,52 +1,96 @@
-// See LICENSE.SoftFloat for license details.
-
-

-#include <stdbool.h>

-#include <stdint.h>

-#include "platform.h"

-#include "internals.h"

-#include "softfloat.h"

-

-int_fast32_t f64_to_i32_r_minMag( float64_t a, bool exact )

-{

-    union ui64_f64 uA;

-    uint_fast64_t uiA;

-    int_fast16_t exp;

-    uint_fast64_t sig;

-    bool sign;

-    int_fast16_t shiftCount;

-    uint_fast32_t absZ;

-    union { uint32_t ui; int32_t i; } uZ;

-    int_fast32_t z;

-

-    uA.f = a;

-    uiA = uA.ui;

-    exp = expF64UI( uiA );

-    sig = fracF64UI( uiA );

-    if ( exp < 0x3FF ) {

-        if ( exact && ( exp | sig ) ) {

-            softfloat_raiseFlags( softfloat_flag_inexact );

-        }

-        return 0;

-    }

-    sign = signF64UI( uiA );

-    if ( 0x41E < exp ) {

-        if ( ( exp == 0x7FF ) && sig ) sign = 0;

-        goto invalid;

-    }

-    sig |= UINT64_C( 0x0010000000000000 );

-    shiftCount = 0x433 - exp;

-    absZ = sig>>shiftCount;

-    uZ.ui = sign ? - absZ : absZ;

-    z = uZ.i;

-    if ( ( z < 0 ) != sign ) goto invalid;

-    if ( exact && ( (uint_fast64_t) absZ<<shiftCount != sig ) ) {

-        softfloat_raiseFlags( softfloat_flag_inexact );

-    }

-    return z;

- invalid:

-    softfloat_raiseFlags( softfloat_flag_invalid );

-    return sign ? -0x7FFFFFFF - 1 : 0x7FFFFFFF;

-

-}

-

+
+/*============================================================================
+
+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"
+
+int_fast32_t f64_to_i32_r_minMag( float64_t a, bool exact )
+{
+    union ui64_f64 uA;
+    uint_fast64_t uiA;
+    int_fast16_t exp;
+    uint_fast64_t sig;
+    int_fast16_t shiftDist;
+    bool sign;
+    int_fast32_t absZ;
+
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    uA.f = a;
+    uiA = uA.ui;
+    exp = expF64UI( uiA );
+    sig = fracF64UI( uiA );
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    shiftDist = 0x433 - exp;
+    if ( 53 <= shiftDist ) {
+        if ( exact && (exp | sig) ) {
+            softfloat_raiseFlags( softfloat_flag_inexact );
+        }
+        return 0;
+    }
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    sign = signF64UI( uiA );
+    if ( shiftDist < 22 ) {
+        if (
+            sign && (exp == 0x41E) && (sig < UINT64_C( 0x0000000000200000 ))
+        ) {
+            if ( exact && sig ) {
+                softfloat_raiseFlags( softfloat_flag_inexact );
+            }
+            return -0x7FFFFFFF - 1;
+        }
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        return
+            (exp == 0x7FF) && sig ? i32_fromNaN
+                : sign ? i32_fromNegOverflow : i32_fromPosOverflow;
+    }
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    sig |= UINT64_C( 0x0010000000000000 );
+    absZ = sig>>shiftDist;
+    if ( exact && ((uint_fast64_t) (uint_fast32_t) absZ<<shiftDist != sig) ) {
+        softfloat_raiseFlags( softfloat_flag_inexact );
+    }
+    return sign ? -absZ : absZ;
+
+}
+