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