2 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_FUNC_ATAN],
9 dnl Determine ATAN_LIBM.
10 gl_COMMON_DOUBLE_MATHFUNC([atan])