* @author Michael Beck
* @version $Id$
*/
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include "config.h"
#include "firmstat_t.h"
#include "tv_t.h"
ir_mode *mode = get_tarval_mode(tv);
if (tv == get_mode_null(mode))
- return STAT_FC_1;
+ return STAT_FC_0;
else if (tv == get_mode_one(mode))
return STAT_FC_1;
-
+ else if (tarval_is_finite(tv) && tarval_ieee754_zero_mantissa(tv)) {
+ int exp = tarval_ieee754_get_exponent(tv);
+
+ if (! tarval_is_negative(tv)) {
+ if (exp == 1)
+ return STAT_FC_2;
+ else if (exp == -1)
+ return STAT_FC_0_5;
+ }
+ return STAT_FC_POWER_OF_TWO;
+ }
return STAT_FC_OTHER;
}
/* return a human readable name for an float classification */
const char *stat_fc_name(float_classify_t classification) {
switch (classification) {
- case STAT_FC_0: return "0.0";
- case STAT_FC_1: return "1.0";
- case STAT_FC_2: return "2.0";
- case STAT_FC_0_5: return "0.5";
- case STAT_FC_EXACT: return "exact";
- case STAT_FC_OTHER: return "other";
- default: return "<UNKNOWN>";
+ case STAT_FC_0: return "0.0";
+ case STAT_FC_1: return "1.0";
+ case STAT_FC_2: return "2.0";
+ case STAT_FC_0_5: return "0.5";
+ case STAT_FC_POWER_OF_TWO: return "2.0^x";
+ case STAT_FC_OTHER: return "other";
+ default: return "<UNKNOWN>";
}
}