Josh Stone bbbc2bd1d7 impl 128-bit numeric casts ... This includes new conditional methods `ToPrimitive::{to_i128,to_u128}` and `FromPrimitive::{from_i128,from_u128}`. Since features can only be additive, these methods must not cause a breaking change to anyone when enabled -- thus they have a default implementation that converts through 64-bit values. Types that can do better with a full 128-bit integer, like bigint or floating-point, will probably want to override these.		2018-05-07 12:28:53 -07:00
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cast.rs	impl 128-bit numeric casts	2018-05-07 12:28:53 -07:00