Support dtor sections on Mach-O.

[libfirm] / ir / tv / fltcalc.c

diff --git a/ir/tv/fltcalc.c b/ir/tv/fltcalc.c
index a11c6f8..d6105a8 100644 (file)
--- a/ir/tv/fltcalc.c
+++ b/ir/tv/fltcalc.c
@@ -24,21 +24,18 @@
  * @author   Mathias Heil
  * @version  $Id$
  */
-
 #include "config.h"
 
 #include "fltcalc.h"
 #include "strcalc.h"
 
-#include <math.h>    /* need isnan() and isinf() (will be changed)*/
+#include <math.h>
 /* undef some reused constants defined by math.h */
 #ifdef NAN
 #  undef NAN
 #endif
 
-#ifdef HAVE_INTTYPES_H
-# include <inttypes.h>
-#endif
+#include <inttypes.h>
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -1228,6 +1225,12 @@ fp_value *fc_cast(const fp_value *value, const ieee_descriptor_t *desc, fp_value
                else
                        return fc_get_snan(desc, result);
        }
+       else if(value->desc.clss == INF) {
+               if (value->sign == 0)
+                       return fc_get_plusinf(desc, result);
+               else
+                       return fc_get_minusinf(desc, result);
+       }
 
        /* set the descriptor of the new value */
        result->desc.exponent_size = desc->exponent_size;
@@ -1329,7 +1332,10 @@ fp_value *fc_get_qnan(const ieee_descriptor_t *desc, fp_value *result) {
        return result;
 }
 
-fp_value *fc_get_plusinf(const ieee_descriptor_t *desc, fp_value *result) {
+fp_value *fc_get_plusinf(const ieee_descriptor_t *desc, fp_value *result)
+{
+       char *mant;
+
        if (result == NULL) result = calc_buffer;
 
        result->desc.exponent_size = desc->exponent_size;
@@ -1341,7 +1347,11 @@ fp_value *fc_get_plusinf(const ieee_descriptor_t *desc, fp_value *result) {
 
        sc_val_from_ulong((1 << desc->exponent_size) - 1, _exp(result));
 
-       sc_val_from_ulong(0, _mant(result));
+       mant = _mant(result);
+       sc_val_from_ulong(0, mant);
+       if (desc->explicit_one) {
+               sc_set_bit_at(mant, result->desc.mantissa_size + ROUNDING_BITS);
+       }
 
        return result;
 }