* libc/stdlib/strtod.c (_strtod_r): Add NaN support. * (strtof): Ditto. * libc/stdio/vfscanf.c (__svfscanf_r): Ditto. * Makefile.am (MATHOBJS_IN_LIBC): Add s_nan and sf_nan functions for use by strtod and strtof. * Makefile.in: Regenerated.