From 9946e7a949d3b0f2795d930aa2f2ce7bda5e4f8a Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Wed, 8 Jun 2016 21:32:57 +0000 Subject: Fix ldexp, scalbn, scalbln for sNaN input (bug 20225). The wrapper implementations of ldexp / scalbn / scalbln (architecture-independent), and their float / long double variants, return sNaN for sNaN input. This patch fixes them to add relevant arguments to themselves so that qNaN is returned in this case. Tested for x86_64 and x86. [BZ #20225] * math/s_ldexp.c (__ldexp): Add non-finite or zero argument to itself. * math/s_ldexpf.c (__ldexpf): Likewise. * math/s_ldexpl.c (__ldexpl): Likewise. * math/w_scalbln.c (__w_scalbln): Likewise. * math/w_scalblnf.c (__w_scalblnf): Likewise. * math/w_scalblnl.c (__w_scalblnl): Likewise. * math/libm-test.inc (scalbn_test_data): Add sNaN tests. (scalbln_test_data): Likewise. --- ChangeLog | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index 201516873b..cf5e480bbf 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,16 @@ 2016-06-08 Joseph Myers + [BZ #20225] + * math/s_ldexp.c (__ldexp): Add non-finite or zero argument to + itself. + * math/s_ldexpf.c (__ldexpf): Likewise. + * math/s_ldexpl.c (__ldexpl): Likewise. + * math/w_scalbln.c (__w_scalbln): Likewise. + * math/w_scalblnf.c (__w_scalblnf): Likewise. + * math/w_scalblnl.c (__w_scalblnl): Likewise. + * math/libm-test.inc (scalbn_test_data): Add sNaN tests. + (scalbln_test_data): Likewise. + [BZ #20224] * sysdeps/i386/fpu/s_cbrtl.S (__cbrtl): Add non-finite or zero argument to itself. -- cgit 1.4.1