@node ax_check_awk_atan2
@unnumberedsec ax_check_awk_atan2

@majorheading Synopsis

@smallexample
AX_CHECK_AWK_ATAN2([ACTION-IF-SUCCESS],[ACTION-IF-FAILURE])
@end smallexample

@majorheading Description

Check if AWK supports atan2() function. If successful execute
ACTION-IF-SUCCESS otherwise ACTION-IF-FAILURE.

This work is heavily based upon testawk.sh script by Heiner Steven. You
should find his script (and related works) at
<http://www.shelldorado.com/articles/awkcompat.html>. Thanks to
Alessandro Massignan for his suggestions and extensive nawk tests on
FreeBSD.

@majorheading Source Code

Download the
@uref{http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=blob_plain;f=m4/ax_check_awk_atan2.m4,latest
version of @file{ax_check_awk_atan2.m4}} or browse
@uref{http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=history;f=m4/ax_check_awk_atan2.m4,the
macro's revision history}.

@majorheading License

@w{Copyright @copyright{} 2009 Francesco Salvestrini @email{salvestrini@@users.sourceforge.net}}

Copying and distribution of this file, with or without modification, are
permitted in any medium without royalty provided the copyright notice
and this notice are preserved. This file is offered as-is, without any
warranty.