Upgrade to SoftFloat 3e

1 files changed, 88 insertions, 43 deletions

diff --git a/softfloat/f32_to_ui32_r_minMag.c b/softfloat/f32_to_ui32_r_minMag.c
index 7d993de..437d3bf 100755..100644
--- a/softfloat/f32_to_ui32_r_minMag.c
+++ b/softfloat/f32_to_ui32_r_minMag.c
@@ -1,43 +1,88 @@
-// See LICENSE.SoftFloat for license details.
-
-

-#include <stdbool.h>

-#include <stdint.h>

-#include "platform.h"

-#include "internals.h"

-#include "softfloat.h"

-

-uint_fast32_t f32_to_ui32_r_minMag( float32_t a, bool exact )

-{

-    union ui32_f32 uA;

-    uint_fast32_t uiA;

-    int_fast16_t exp;

-    uint_fast32_t sig;

-    int_fast16_t shiftCount;

-    uint_fast32_t z;

-

-    uA.f = a;

-    uiA = uA.ui;

-    exp = expF32UI( uiA );

-    sig = fracF32UI( uiA );

-    if ( exp < 0x7F ) {

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

-            softfloat_raiseFlags( softfloat_flag_inexact );

-        }

-        return 0;

-    }

-    if ( signF32UI( uiA ) ) goto invalid;

-    shiftCount = 0x9E - exp;

-    if ( shiftCount < 0 ) goto invalid;

-    sig = ( sig | 0x00800000 )<<8;

-    z = sig>>shiftCount;

-    if ( exact && ( sig & ( ( (uint_fast32_t) 1<<shiftCount ) - 1 ) ) ) {

-        softfloat_raiseFlags( softfloat_flag_inexact );

-    }

-    return z;

- invalid:

-    softfloat_raiseFlags( softfloat_flag_invalid );

-    return 0xFFFFFFFF;

-

-}

-

+
+/*============================================================================
+
+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"
+
+uint_fast32_t f32_to_ui32_r_minMag( float32_t a, bool exact )
+{
+    union ui32_f32 uA;
+    uint_fast32_t uiA;
+    int_fast16_t exp;
+    uint_fast32_t sig;
+    int_fast16_t shiftDist;
+    bool sign;
+    uint_fast32_t z;
+
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    uA.f = a;
+    uiA = uA.ui;
+    exp = expF32UI( uiA );
+    sig = fracF32UI( uiA );
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    shiftDist = 0x9E - exp;
+    if ( 32 <= shiftDist ) {
+        if ( exact && (exp | sig) ) {
+            softfloat_raiseFlags( softfloat_flag_inexact );
+        }
+        return 0;
+    }
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    sign = signF32UI( uiA );
+    if ( sign || (shiftDist < 0) ) {
+        softfloat_raiseFlags( softfloat_flag_invalid );
+        return
+            (exp == 0xFF) && sig ? ui32_fromNaN
+                : sign ? ui32_fromNegOverflow : ui32_fromPosOverflow;
+    }
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    sig = (sig | 0x00800000)<<8;
+    z = sig>>shiftDist;
+    if ( exact && (z<<shiftDist != sig) ) {
+        softfloat_raiseFlags( softfloat_flag_inexact );
+    }
+    return z;
+
+}
+