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LibJS: Add Math.exp()

This commit is contained in:
Linus Groh 2020-05-18 15:11:15 +01:00 committed by Andreas Kling
parent b27834cf16
commit e375766f98
5 changed files with 48 additions and 12 deletions

View file

@ -1,17 +1,14 @@
load("test-common.js");
// Borrowed from LibM/TestMath.cpp :^)
function expectClose(a, b) { assert(Math.abs(a - b) < 0.000001); }
try {
expectClose(Math.E, 2.718281);
expectClose(Math.LN2, 0.693147);
expectClose(Math.LN10, 2.302585);
expectClose(Math.LOG2E, 1.442695);
expectClose(Math.LOG10E, 0.434294);
expectClose(Math.PI, 3.1415926);
expectClose(Math.SQRT1_2, 0.707106);
expectClose(Math.SQRT2, 1.414213);
assert(isClose(Math.E, 2.718281));
assert(isClose(Math.LN2, 0.693147));
assert(isClose(Math.LN10, 2.302585));
assert(isClose(Math.LOG2E, 1.442695));
assert(isClose(Math.LOG10E, 0.434294));
assert(isClose(Math.PI, 3.1415926));
assert(isClose(Math.SQRT1_2, 0.707106));
assert(isClose(Math.SQRT2, 1.414213));
console.log("PASS");
} catch (e) {

View file

@ -0,0 +1,19 @@
load("test-common.js");
try {
assert(Math.exp.length === 1);
assert(Math.exp(0) === 1);
assert(isClose(Math.exp(-2), 0.135335));
assert(isClose(Math.exp(-1), 0.367879));
assert(isClose(Math.exp(1), 2.718281));
assert(isClose(Math.exp(2), 7.389056));
assert(isNaN(Math.exp()));
assert(isNaN(Math.exp(undefined)));
assert(isNaN(Math.exp("foo")));
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e);
}

View file

@ -50,3 +50,11 @@ function assertThrowsError(testFunction, options) {
}
}
/**
* Check whether the difference between two numbers is less than 0.000001.
* @param {Number} a First number
* @param {Number} b Second number
*/
function isClose(a, b) {
return Math.abs(a - b) < 0.000001;
}