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javascripter/abs.js

Created November 3, 2009 14:25
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abs.js
function abs(n) {
return n >= 0 ? 0+n : -n;
}
Raw
abs_tests.js
function run_tests() {
console.assert(abs(0) == 0, "abs(0) == 0");
console.assert(abs(1) == 1, "abs(1) == 1");
console.assert(abs(-1) == 1, "abs(-1) == 1");
console.assert(1/0 == 1/abs(-0), "1/0 == 1/abs(-0)");
console.assert(1/-0 != 1/abs(-0), "1/-0 != 1/abs(-0)");
}
run_tests();
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