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ax_cxx_have_complex_math1.m4
# ============================================================================== # https://www.gnu.org/software/autoconf-archive/ax_cxx_have_complex_math1.html # ============================================================================== # # SYNOPSIS # # AX_CXX_HAVE_COMPLEX_MATH1 # # DESCRIPTION # # If the compiler has the complex math functions cos, cosh, exp, log, pow, # sin, sinh, sqrt, tan and tanh, define HAVE_COMPLEX_MATH1. # # LICENSE # # Copyright (c) 2008 Todd Veldhuizen # Copyright (c) 2008 Luc Maisonobe <luc@spaceroots.org> # # 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. #serial 7 AU_ALIAS([AC_CXX_HAVE_COMPLEX_MATH1], [AX_CXX_HAVE_COMPLEX_MATH1]) AC_DEFUN([AX_CXX_HAVE_COMPLEX_MATH1], [AC_CACHE_CHECK(whether the compiler has complex math functions, ax_cv_cxx_have_complex_math1, [AC_REQUIRE([AX_CXX_NAMESPACES]) AC_LANG_SAVE AC_LANG_CPLUSPLUS ac_save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_TRY_LINK([#include <complex> #ifdef HAVE_NAMESPACES using namespace std; #endif],[complex<double> x(1.0, 1.0), y(1.0, 1.0); cos(x); cosh(x); exp(x); log(x); pow(x,1); pow(x,double(2.0)); pow(x, y); pow(double(2.0), x); sin(x); sinh(x); sqrt(x); tan(x); tanh(x); return 0;], ax_cv_cxx_have_complex_math1=yes, ax_cv_cxx_have_complex_math1=no) LIBS="$ac_save_LIBS" AC_LANG_RESTORE ]) if test "$ax_cv_cxx_have_complex_math1" = yes; then AC_DEFINE(HAVE_COMPLEX_MATH1,,[define if the compiler has complex math functions]) fi ])