use strict;
use POSIX;
-use Test::More tests => 14;
+use Test::More;
# These tests are mainly to make sure that these arithmetic functions
# exist and are accessible. They are not meant to be an exhaustive
# test for the interface.
+sub between {
+ my ($low, $have, $high, $desc) = @_;
+ local $Test::Builder::Level = $Test::Builder::Level + 1;
+
+ cmp_ok($have, '>=', $low, $desc);
+ cmp_ok($have, '<=', $high, $desc);
+}
+
is(acos(1), 0, "Basic acos(1) test");
+between(3.14, acos(-1), 3.15, 'acos(-1)');
+between(1.57, acos(0), 1.58, 'acos(0)');
is(asin(0), 0, "Basic asin(0) test");
+cmp_ok(asin(1), '>', 1.57, "Basic asin(1) test");
+cmp_ok(asin(-1), '<', -1.57, "Basic asin(-1) test");
+cmp_ok(asin(1), '==', -asin(-1), 'asin(1) == -asin(-1)');
is(atan(0), 0, "Basic atan(0) test");
+between(0.785, atan(1), 0.786, 'atan(1)');
+between(-0.786, atan(-1), -0.785, 'atan(-1)');
+cmp_ok(atan(1), '==', -atan(-1), 'atan(1) == -atan(-1)');
is(cosh(0), 1, "Basic cosh(0) test");
+between(1.54, cosh(1), 1.55, 'cosh(1)');
+between(1.54, cosh(-1), 1.55, 'cosh(-1)');
+is(cosh(1), cosh(-1), 'cosh(1) == cosh(-1)');
is(floor(1.23441242), 1, "Basic floor(1.23441242) test");
+is(floor(-1.23441242), -2, "Basic floor(-1.23441242) test");
is(fmod(3.5, 2.0), 1.5, "Basic fmod(3.5, 2.0) test");
is(join(" ", frexp(1)), "0.5 1", "Basic frexp(1) test");
is(ldexp(0,1), 0, "Basic ldexp(0,1) test");
is(log10(10), 1, "Basic log10(10) test");
is(join(" ", modf(1.76)), "0.76 1", "Basic modf(1.76) test");
is(sinh(0), 0, "Basic sinh(0) test");
+between(1.17, sinh(1), 1.18, 'sinh(1)');
+between(-1.18, sinh(-1), -1.17, 'sinh(-1)');
is(tan(0), 0, "Basic tan(0) test");
+between(1.55, tan(1), 1.56, 'tan(1)');
+between(1.55, tan(1), 1.56, 'tan(-1)');
+cmp_ok(tan(1), '==', -tan(-1), 'tan(1) == -tan(-1)');
is(tanh(0), 0, "Basic tanh(0) test");
+between(0.76, tanh(1), 0.77, 'tanh(1)');
+between(-0.77, tanh(-1), -0.76, 'tanh(-1)');
+cmp_ok(tanh(1), '==', -tanh(-1), 'tanh(1) == -tanh(-1)');
+
+done_testing();