Guarantee a definition of NAN. * lib/math.in.h (NAN): Define if missing. * tests/test-math.c (main): Test it. * doc/posix-headers/math.texi (math.h): Document this. * lib/isnan.c (rpl_isnand): Use it. * tests/test-ceilf1.c (NaN): Delete, and use NAN instead. * tests/test-floorf1.c (NaN): Likewise. * tests/test-frexp.c (NaN): Likewise. * tests/test-isnand.c (NaN): Likewise. * tests/test-isnanf.c (NaN): Likewise. * tests/test-round1.c (NaN): Likewise. * tests/test-roundf1.c (NaN): Likewise. * tests/test-snprintf-posix.h (NaN): Likewise. * tests/test-sprintf-posix.h (NaN): Likewise. * tests/test-trunc1.c (NaN): Likewise. * tests/test-truncf1.c (NaN): Likewise. * tests/test-vasnprintf-posix.c (NaN): Likewise. * tests/test-vasprintf-posix.c (NaN): Likewise. * modules/isnand-nolibm (Depends-on): Add math. * modules/isnanf-nolibm (Depends-on): Likewise. * modules/isnanl (Depends-on): Likewise. * modules/isnanl-nolibm (Depends-on): Likewise. * modules/snprintf-posix-tests (Depends-on): Likewise. * modules/sprintf-posix-tests (Depends-on): Likewise. * modules/vsnprintf-posix-tests (Depends-on): Likewise. * modules/vsprintf-posix-tests (Depends-on): Likewise. * modules/vasnprintf-posix-tests (Depends-on): Likewise. * modules/vasprintf-posix-tests (Depends-on): Likewise. Signed-off-by: Eric Blake <ebb9@byu.net>

Files:
tests/test-vasnprintf-posix.c
tests/test-vasnprintf-posix2.sh
tests/test-vasnprintf-posix2.c
m4/locale-fr.m4

Depends-on:
math
stdint

configure.ac:
gt_LOCALE_FR
gt_LOCALE_FR_UTF8

Makefile.am:
TESTS += test-vasnprintf-posix test-vasnprintf-posix2.sh
TESTS_ENVIRONMENT += EXEEXT='@EXEEXT@' LOCALE_FR='@LOCALE_FR@' LOCALE_FR_UTF8='@LOCALE_FR_UTF8@'
check_PROGRAMS += test-vasnprintf-posix test-vasnprintf-posix2