class Libmpc < Formula
  desc "C library for the arithmetic of high precision complex numbers"
  homepage "http://multiprecision.org"
  url "https://ftp.gnu.org/gnu/mpc/mpc-1.0.3.tar.gz"
  mirror "http://multiprecision.org/mpc/download/mpc-1.0.3.tar.gz"
  sha256 "617decc6ea09889fb08ede330917a00b16809b8db88c29c31bfbb49cbf88ecc3"
  revision 1

  bottle do
    cellar :any
    sha256 "94016748ba9688fa05324d6bd1a0fbfc5e4924a4715d9611cfde464f85bb25cd" => :high_sierra
    sha256 "16ddbf6cf6c187a58f932cc907cf9c545b5a7f056282d5c01df849db7490e53e" => :sierra
    sha256 "5527bea12285c11434ba29cd94de47d693ac5f9400d9e1ab161907604dcecfb4" => :el_capitan
    sha256 "fa1789c2694894febb26850ef356689e7bfc19251f6f84f77b65c2ba677fb2a1" => :yosemite
  end

  depends_on "gmp"
  depends_on "mpfr"

  def install
    args = %W[
      --prefix=#{prefix}
      --disable-dependency-tracking
      --with-gmp=#{Formula["gmp"].opt_prefix}
      --with-mpfr=#{Formula["mpfr"].opt_prefix}
    ]

    system "./configure", *args
    system "make"
    system "make", "check"
    system "make", "install"
  end

  test do
    (testpath/"test.c").write <<~EOS
      #include <mpc.h>
      #include <assert.h>
      #include <math.h>

      int main() {
        mpc_t x;
        mpc_init2 (x, 256);
        mpc_set_d_d (x, 1., INFINITY, MPC_RNDNN);
        mpc_tanh (x, x, MPC_RNDNN);
        assert (mpfr_nan_p (mpc_realref (x)) && mpfr_nan_p (mpc_imagref (x)));
        mpc_clear (x);
        return 0;
      }
    EOS
    system ENV.cc, "test.c", "-L#{lib}", "-L#{Formula["mpfr"].opt_lib}",
                   "-L#{Formula["gmp"].opt_lib}", "-lmpc", "-lmpfr",
                   "-lgmp", "-o", "test"
    system "./test"
  end
end