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#include <utest/utest.h>
#include "mod360.h"
#include <glib.h>
#include <math.h>
/** Note: doesn't distinguish between 0.0 and -0.0. */
static bool same_double(double const x, double const y)
{
return ( ( isnan(x) && isnan(y) )
|| ( x == y ) );
}
int main(int argc, char **argv)
{
double const inf = 1e400;
double const nan = inf - inf;
utest_start("mod360.cpp");
UTEST_TEST("same_double") {
double const sd_cases[] = {inf, -inf, nan, 0.0, -1.0, 1.0, 8.0};
for (unsigned i = 0; i < G_N_ELEMENTS(sd_cases); ++i) {
for (unsigned j = 0; j < G_N_ELEMENTS(sd_cases); ++j) {
UTEST_ASSERT( same_double(sd_cases[i], sd_cases[j])
== ( i == j ) );
}
}
}
UTEST_TEST("mod360") {
struct Case {
double x;
double y;
} const cases[] = {
{0, 0},
{10, 10},
{360, 0},
{361, 1},
{-1, 359},
{-359, 1},
{-360, -0},
{-361, 359},
{inf, 0},
{-inf, 0},
{nan, 0},
{720, 0},
{-721, 359},
{-1000, 80}
};
for(unsigned i = 0; i < G_N_ELEMENTS(cases); ++i) {
Case const &c = cases[i];
UTEST_ASSERT(same_double(mod360(c.x), c.y));
}
}
return ( utest_end()
? EXIT_SUCCESS
: EXIT_FAILURE );
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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