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authorJoseph Myers <joseph@codesourcery.com>2012-10-31 13:01:17 +0000
committerJoseph Myers <joseph@codesourcery.com>2012-10-31 13:01:17 +0000
commitef82f4da79332e504e17729536d501add283719b (patch)
tree02fa059ea66f20f529767cedbcb25a8be3d2fd8b /ChangeLog
parent954ef0d98d1fd8cc7a16a7289f286e885db36690 (diff)
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Fix fma underflow exceptions in after-rounding edge cases.
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+2012-10-31  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/ieee754/dbl-64/s_fma.c: Include <tininess.h>.
+	(__fma): Do not extract and scale down low bits on after-rounding
+	systems when result rounded to normal precision would have normal
+	exponent.
+	* sysdeps/ieee754/ldbl-128/s_fmal.c: Include <tininess.h>.
+	(__fmal): Do not extract and scale down low bits on after-rounding
+	systems when result rounded to normal precision would have normal
+	exponent.
+	* sysdeps/ieee754/ldbl-96/s_fmal.c: Include <tininess.h>.
+	(__fmal): Do not extract and scale down low bits on after-rounding
+	systems when result rounded to normal precision would have normal
+	exponent.
+	* math/libm-test.inc (UNDERFLOW_EXCEPTION_BEFORE_ROUNDING): New
+	macro.
+	(fma_test): Add more tests.
+	(fma_test_towardzero): Likewise.
+	(fma_test_downward): Likewise.
+	(fma_test_upward): Likewise.
+
 2012-10-30  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* sysdeps/i386/tininess.h: Renamed to ...