moving trunk for module inkscape

(bzr r1)

1 files changed, 70 insertions, 0 deletions

diff --git a/src/mod360-test.cpp b/src/mod360-test.cpp
new file mode 100644
index 000000000..83f0feba7
--- /dev/null
+++ b/src/mod360-test.cpp
@@ -0,0 +1,70 @@
+#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 :