I was looking at the number of complaints about the Math object, especially regarding the lack of required precision (refer to the thread "Re: ES6 accuracy of special functions" for a lengthy discussion on this). Because of this, I propose that a new object, StrictMath, should be added. This would be analogous to java.lang.Math (performance) vs java.util.StrictMath (accuracy). People could still define their own implementations if needed, though.
Basic specs would be similar to the Math object, but with the following caveats: 1. Fixed-size integer methods such as Math.imul() don't need a StrictMath variant. 2. The input precision must be no more than a Float64 in size (depends on how this is spec'd, may not be necessary). 3. The output should have an error no greater than 1 ulp (the space between two adjacent, distinct floating point values, identical to the Java spec of an ulp). I don't see #2 staying if this is spec'd well, but the rest remain. Java's java.lang.StrictMath actually requires the fdlibm semantics and algorithm to be used for that class's implementations. java.lang.Math is closer to this spec in its own specification. -- Isiah Meadows
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