2
# Determine if the printf() functions have the %a format character.
3
# This is modified from:
4
# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_slist.html
5
AC_DEFUN([AC_C_PRINTF_A],
6
[AC_CACHE_CHECK([if printf has the %a format character],[llvm_cv_c_printf_a],
17
sprintf(Buffer, "%a", A);
21
if (A != 0x1.999999999999ap-4)
24
llvm_cv_c_printf_a=yes,
25
llvmac_cv_c_printf_a=no,
26
llvmac_cv_c_printf_a=no)
28
if test "$llvm_cv_c_printf_a" = "yes"; then
29
AC_DEFINE([HAVE_PRINTF_A],[1],[Define to have the %a format string])