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libcore: use unboxed closures in float_to_str_bytes_common

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This commit is contained in:
Jorge Aparicio 2014-12-06 12:05:38 -05:00
parent 5579692ce7
commit c7b6eb38ff
1 changed files with 6 additions and 3 deletions
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9
src/libcore/fmt/float.rs
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@ -20,6 +20,7 @@ use fmt;
use iter::{range, DoubleEndedIteratorExt};
use num::{Float, FPNaN, FPInfinite, ToPrimitive};
use num::cast;
use ops::FnOnce;
use result::Result::Ok;
use slice::{mod, SlicePrelude};
use str::StrPrelude;
@ -84,7 +85,7 @@ static DIGIT_E_RADIX: uint = ('e' as uint) - ('a' as uint) + 11u;
/// between digit and exponent sign `'e'`.
/// - Panics if `radix` > 25 and `exp_format` is `ExpBin` due to conflict
/// between digit and exponent sign `'p'`.
pub fn float_to_str_bytes_common<T: Float, U>(
pub fn float_to_str_bytes_common<T: Float, U, F>(
num: T,
radix: uint,
negative_zero: bool,
@ -92,8 +93,10 @@ pub fn float_to_str_bytes_common<T: Float, U>(
digits: SignificantDigits,
exp_format: ExponentFormat,
exp_upper: bool,
f: |&[u8]| -> U
) -> U {
f: F
) -> U where
F: FnOnce(&[u8]) -> U,
{
assert!(2 <= radix && radix <= 36);
match exp_format {
ExpDec if radix >= DIGIT_E_RADIX // decimal exponent 'e'