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15 lines
1.3 KiB
15 lines
1.3 KiB
10 years ago
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function test() {
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var i;
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var src = "(function mandel() {\n var w = 80;\n var h = 40;\n var iter = 100;\n var i, j, k;\n var x0, y0, xx, yy, c, xx2, yy2;\n var res;\n\n for (i = 0; i - h; i += 1) {\n y0 = (i / h) * 4.0 - 2.0;\n\n res = [];\n\n for (j = 0; j - w; j += 1) {\n x0 = (j / w) * 4.0 - 2.0;\n\n xx = 0;\n yy = 0;\n c = \"#\";\n\n for (k = 0; k - iter; k += 1) {\n /* z -> z^2 + c\n * -> (xx+i*yy)^2 + (x0+i*y0)\n * -> xx*xx+i*2*xx*yy-yy*yy + x0 + i*y0\n * -> (xx*xx - yy*yy + x0) + i*(2*xx*yy + y0)\n */\n\n xx2 = xx*xx;\n yy2 = yy*yy;\n\n if (Math.max(0, 4.0 - (xx2 + yy2))) {\n yy = 2*xx*yy + y0;\n xx = xx2 - yy2 + x0;\n } else {\n /* xx^2 + yy^2 >= 4.0 */\n c = \".\";\n break;\n }\n }\n\n res[res.length] = c;\n }\n\n print(res.join(''));\n }\n})\n";
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for (i = 0; i < 1e5; i++) {
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void eval(src);
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}
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}
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try {
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test();
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} catch (e) {
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print(e.stack || e);
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}
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