1 files changed, 93 insertions, 47 deletions
diff --git a/softfloat/f64_to_ui64_r_minMag.c b/softfloat/f64_to_ui64_r_minMag.c
index cb5d448..be30f88 100755..100644
--- a/softfloat/f64_to_ui64_r_minMag.c
+++ b/softfloat/f64_to_ui64_r_minMag.c
@@ -1,47 +1,93 @@
-// See LICENSE.SoftFloat for license details.
-
-
-#include <stdbool.h>
-#include <stdint.h>
-#include "platform.h"
-#include "internals.h"
-#include "softfloat.h"
-
-uint_fast64_t f64_to_ui64_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 shiftCount;
-    uint_fast64_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;
-    }
-    if ( signF64UI( uiA ) ) goto invalid;
-    shiftCount = exp - 0x433;
-    if ( 0 <= shiftCount ) {
-        if ( 0x43E < exp ) goto invalid;
-        z = ( sig | UINT64_C( 0x0010000000000000 ) )<<shiftCount;
-    } else {
-        sig |= UINT64_C( 0x0010000000000000 );
-        z = sig>>( - shiftCount );
-        if ( exact && (uint64_t) ( sig<<( shiftCount & 63 ) ) ) {
-            softfloat_raiseFlags( softfloat_flag_inexact );
-        }
-    }
-    return z;
- invalid:
-    softfloat_raiseFlags( softfloat_flag_invalid );
-    return UINT64_C( 0xFFFFFFFFFFFFFFFF );
-
-}
-
+
+/*============================================================================
+
+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_fast64_t f64_to_ui64_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;
+    uint_fast64_t z;
+
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    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 ( sign ) goto invalid;
+    if ( shiftDist <= 0 ) {
+        if ( shiftDist < -11 ) goto invalid;
+        z = (sig | UINT64_C( 0x0010000000000000 ))<<-shiftDist;
+    } else {
+        sig |= UINT64_C( 0x0010000000000000 );
+        z = sig>>shiftDist;
+        if ( exact && (uint64_t) (sig<<(-shiftDist & 63)) ) {
+            softfloat_raiseFlags( softfloat_flag_inexact );
+        }
+    }
+    return z;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    return
+        (exp == 0x7FF) && sig ? ui64_fromNaN
+            : sign ? ui64_fromNegOverflow : ui64_fromPosOverflow;
+
+}
+