Guyou and Pierce Quincuncial projections broken in Chrome 33

[mbostock]

Guyou and Pierce Quincuncial projections broken in Chrome 33

[mbostock]

Related thread https://code.google.com/p/v8/issues/detail?id=3006 and possibly-related comment:

There is a serious problem with the new sin function's behavior on very small negative values. In Dart, we have a test that sin(x) = x for very small numbers, since the derivative of sin at 0 is 1. The new sin function works correctly for 0 < x < 1E-17, but for -1E17 < x < 0, sin(x) == 0 according to V8. This is wrong, and is probably happening because the algorithm is computing sin(x + 2pi), or something.