add some trivial emscripten test cases

emscripten-testcases/fizzbuzz.c

@@ -0,0 +1,18 @@
+/*
+ *  Fizzbuzz test case.
+ */
+
+#include <stdio.h>
+
+int main(int argc, char *argv[]) {
+	int i;
+
+	for (i = 1; i <= 100; i++) {
+		if ((i % 3) == 0) { printf("Fizz"); }
+		if ((i % 5) == 0) { printf("Buzz"); }
+		if ((i % 3) && (i % 5)) { printf("%d", i); }
+		printf("\n");
+	}
+
+	return 0;
+}

emscripten-testcases/helloworld.c

@@ -0,0 +1,11 @@
+/*
+ *  Hello World test case.
+ */
+
+#include <stdio.h>
+
+int main(int argc, char *argv[]) {
+	printf("Hello world!\n");
+	return 0;
+}
+

emscripten-testcases/mandelbrot.c

@@ -0,0 +1,52 @@
+/*
+ *  Mandelbrot test case.
+ */
+
+#include <stdio.h>
+
+int main(int argc, char *argv[]) {
+	int w = 80;
+	int h = 40;
+	int iter = 100;
+	int i, j, k;
+	double x0, y0, xx, yy, xx2, yy2;
+	char row[80+1];
+	char c;
+
+	for (i = 0; i < h; i++) {
+		y0 = (double) i / (double) h * 4.0 - 2.0;
+
+		for (j = 0; j < w; j++) {
+			x0 = (double) j / (double) w * 4.0 - 2.0;
+			xx = 0.0;
+			yy = 0.0;
+			c = '#';
+
+			for (k = 0; k < iter; k++) {
+				/* z -> z^2 + c
+				 *   -> (xx+i*yy)^2 + (x0+i*y0)
+				 *   -> xx*xx+i*2*xx*yy-yy*yy + x0 + i*y0
+				 *   -> (xx*xx - yy*yy + x0) + i*(2*xx*yy + y0)
+				 */
+
+				xx2 = xx * xx;
+				yy2 = yy * yy;
+				if (xx2 + yy2 < 4.0) {
+					yy = 2 * xx * yy + y0;
+					xx = xx2 - yy2 + x0;
+				} else {
+					c = '.';
+					break;
+				}
+			}
+
+			row[j] = c;
+		}
+
+		row[j] = (char) 0;
+
+		printf("%s\n", row);
+	}
+
+	return 0;
+}