This crate provides fast functions for printing integer primitives to an
io::Write or a
fmt::Write. The implementation comes straight from
libcore but avoids the performance penalty of going through
dtoa for printing floating point primitives.
Version requirement: rustc 1.0+
 = "0.4"
Performance (lower is better)
The function signatures are:
itoa::Integer is implemented for i8, u8, i16, u16, i32, u32, i64, u64,
i128, u128, isize and usize. 128-bit integer support requires rustc 1.26+ and
i128 feature of this crate enabled.
write function is only available when the
std feature is enabled
(default is enabled). The return value gives the number of bytes written.