diff options
Diffstat (limited to 'libtellurian_gaussian_radius.c')
| -rw-r--r-- | libtellurian_gaussian_radius.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libtellurian_gaussian_radius.c b/libtellurian_gaussian_radius.c index 24c9b54..3c1c96b 100644 --- a/libtellurian_gaussian_radius.c +++ b/libtellurian_gaussian_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_gaussian_radius(double latitude) latitude = radians(latitude); return libtellurian_gaussian_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_gaussian_radius(0) == libtellurian_gaussian_radius_radians(0)); + ASSERT(approx(libtellurian_gaussian_radius(180), libtellurian_gaussian_radius_radians(0))); + ASSERT(approx(libtellurian_gaussian_radius(360), libtellurian_gaussian_radius_radians(0))); + ASSERT(approx(libtellurian_gaussian_radius(90), libtellurian_gaussian_radius(-90))); + ASSERT(approx(libtellurian_gaussian_radius(90), libtellurian_gaussian_radius(270))); + ASSERT(approx(libtellurian_gaussian_radius(45), libtellurian_gaussian_radius(-45))); + ASSERT(approx(libtellurian_gaussian_radius(135), libtellurian_gaussian_radius(45))); + ASSERT(approx(libtellurian_gaussian_radius(-135), libtellurian_gaussian_radius(135))); + ASSERT(libtellurian_gaussian_radius(90) == libtellurian_gaussian_radius_radians(D90)); + ASSERT(libtellurian_gaussian_radius(45) == libtellurian_gaussian_radius_radians(D45)); + ASSERT(libtellurian_gaussian_radius(30) == libtellurian_gaussian_radius_radians(D30)); + return 0; +} + + +#endif |