1 files changed, 85 insertions, 0 deletions
diff --git a/source/f128_to_ui64_r_minMag.c b/source/f128_to_ui64_r_minMag.c
new file mode 100644
index 0000000..87e59e3
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+++ b/source/f128_to_ui64_r_minMag.c
@@ -0,0 +1,85 @@
+
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3, by John R. Hauser.
+
+Copyright 2011, 2012, 2013, 2014 The Regents of the University of California
+(Regents).  All Rights Reserved.  Redistribution and use in source and binary
+forms, with or without modification, are permitted provided that the following
+conditions are met:
+
+Redistributions of source code must retain the above copyright notice,
+this list of conditions, and the following two paragraphs of disclaimer.
+Redistributions in binary form must reproduce the above copyright notice,
+this list of conditions, and the following two paragraphs of disclaimer in the
+documentation and/or other materials provided with the distribution.  Neither
+the name of the Regents nor the names of its contributors may be used to
+endorse or promote products derived from this software without specific prior
+written permission.
+
+IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
+SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING
+OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
+BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
+HEREUNDER IS PROVIDED "AS IS".  REGENTS HAS NO OBLIGATION TO PROVIDE
+MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+
+=============================================================================*/
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "platform.h"
+#include "internals.h"
+#include "softfloat.h"
+
+uint_fast64_t f128_to_ui64_r_minMag( float128_t a, bool exact )
+{
+    union ui128_f128 uA;
+    uint_fast64_t uiA64, uiA0;
+    int_fast32_t exp, shiftCount;
+    uint_fast64_t sig64, sig0;
+    int_fast16_t negShiftCount;
+    uint_fast64_t z;
+
+    uA.f = a;
+    uiA64 = uA.ui.v64;
+    uiA0  = uA.ui.v0;
+    exp = expF128UI64( uiA64 );
+    shiftCount = 0x402F - exp;
+    if ( shiftCount < 0 ) {
+        if ( signF128UI64( uiA64 ) || (shiftCount < -15) ) goto invalid;
+        sig64 = fracF128UI64( uiA64 ) | UINT64_C( 0x0001000000000000 );
+        sig0  = uiA0;
+        negShiftCount = -shiftCount;
+        z = sig64<<negShiftCount | sig0>>(shiftCount & 63);
+        if ( exact && (uint64_t) (sig0<<negShiftCount) ) {
+            softfloat_exceptionFlags |= softfloat_flag_inexact;
+        }
+    } else {
+        sig64 = fracF128UI64( uiA64 );
+        sig0  = uiA0;
+        if ( 49 <= shiftCount ) {
+            if ( exact && (exp | sig64 | sig0) ) {
+                softfloat_exceptionFlags |= softfloat_flag_inexact;
+            }
+            return 0;
+        }
+        if ( signF128UI64( uiA64 ) ) goto invalid;
+        sig64 |= UINT64_C( 0x0001000000000000 );
+        z = sig64>>shiftCount;
+        if ( exact && (sig0 || (z<<shiftCount != sig64)) ) {
+            softfloat_exceptionFlags |= softfloat_flag_inexact;
+        }
+    }
+    return z;
+ invalid:
+    softfloat_raiseFlags( softfloat_flag_invalid );
+    return UINT64_C( 0xFFFFFFFFFFFFFFFF );
+
+}
+