dnl Check whether it's declared.
dnl MacOS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>.
AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [#include <math.h>])
dnl Check whether it's declared.
dnl MacOS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>.
AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [#include <math.h>])