c_ldtoastr 55 maint/gnulib/lib/ftoastr.h int c_ldtoastr (char *buf, size_t bufsize, int flags, int width, long double x); c_ldtoastr 53 maint/gnulib/tests/test-c-ldtoastr.c c_ldtoastr (buf, sizeof buf, 0, 0, 0.1L);