AC_DEFUN([gl_FUNC_TRUNC],
[
AC_REQUIRE([gl_MATH_H_DEFAULTS])
- dnl Persuade glibc <math.h> to declare truncl().
+ dnl Persuade glibc <math.h> to declare trunc().
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
dnl Test whether trunc() is declared.
AC_CHECK_DECLS([trunc], , , [#include <math.h>])