From 09e6857ae73249bc7433f2971dcf291c70e4c766 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sun, 20 Oct 2024 17:28:46 +0200 Subject: Fourth commit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libtellurian_transverse_radius.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'libtellurian_transverse_radius.c') diff --git a/libtellurian_transverse_radius.c b/libtellurian_transverse_radius.c index d94ca86..15bc2f5 100644 --- a/libtellurian_transverse_radius.c +++ b/libtellurian_transverse_radius.c @@ -1,5 +1,6 @@ /* See LICENSE file for copyright and license details. */ #include "common.h" +#ifndef TEST double @@ -8,3 +9,33 @@ libtellurian_transverse_radius(double latitude) latitude = radians(latitude); return libtellurian_transverse_radius_radians(latitude); } + + +#else + + +static int +approx(double a, double b) +{ + return fabs(a - b) <= 1e-8 * (0.5 * (a + b)); +} + +int +main(void) +{ + ASSERT(libtellurian_transverse_radius(0) == libtellurian_transverse_radius_radians(0)); + ASSERT(approx(libtellurian_transverse_radius(180), libtellurian_transverse_radius_radians(0))); + ASSERT(approx(libtellurian_transverse_radius(360), libtellurian_transverse_radius_radians(0))); + ASSERT(approx(libtellurian_transverse_radius(90), libtellurian_transverse_radius(-90))); + ASSERT(approx(libtellurian_transverse_radius(90), libtellurian_transverse_radius(270))); + ASSERT(approx(libtellurian_transverse_radius(45), libtellurian_transverse_radius(-45))); + ASSERT(approx(libtellurian_transverse_radius(135), libtellurian_transverse_radius(45))); + ASSERT(approx(libtellurian_transverse_radius(-135), libtellurian_transverse_radius(135))); + ASSERT(libtellurian_transverse_radius(90) == libtellurian_transverse_radius_radians(D90)); + ASSERT(libtellurian_transverse_radius(45) == libtellurian_transverse_radius_radians(D45)); + ASSERT(libtellurian_transverse_radius(30) == libtellurian_transverse_radius_radians(D30)); + return 0; +} + + +#endif -- cgit v1.2.3-70-g09d2