From: Michael Beck <beck@ipd.info.uni-karlsruhe.de>
Date: Thu, 6 Sep 2007 15:42:13 +0000 (+0000)
Subject: fixed conversion of NAN's
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=0bb43c316272b3a0e325a4c6eed92fed8f6e3bee;p=libfirm

fixed conversion of NAN's

[r15701]
---

diff --git a/ir/tv/fltcalc.c b/ir/tv/fltcalc.c
index db427a0e7..b38d5b916 100644
--- a/ir/tv/fltcalc.c
+++ b/ir/tv/fltcalc.c
@@ -1210,6 +1210,13 @@ fp_value *fc_cast(const fp_value *value, char exp_size, char mant_size, fp_value
 		return result;
 	}
 
+	if (value->desc.clss == NAN) {
+		if (sc_get_highest_set_bit(_mant(value)) == value->desc.mantissa_size + 1)
+			return fc_get_qnan(exp_size, mant_size, result);
+		else
+			return fc_get_snan(exp_size, mant_size, result);
+	}
+
 	/* set the descriptor of the new value */
 	result->desc.exponent_size = exp_size;
 	result->desc.mantissa_size = mant_size;