OpenE2K
/
rust
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

fmt: use the minimum parts array size 

The comments for flt2dec::to_shortest_str says that we only need a slice
of length 5 for the parts array.  Initializing a 16-part array is just
wasted effort and wasted stack space.  Other functions in the flt2dec
module have similar comments, so we adjust the parts arrays passed to
those functions accordingly.
This commit is contained in:
Nathan Froyd 2017-04-13 16:24:30 -04:00
parent a21f61685d
commit 2499d819d4
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/libcore/fmt/float.rs
View File

@ -19,7 +19,7 @@ fn float_to_decimal_common_exact<T>(fmt: &mut Formatter, num: &T,
where T: flt2dec::DecodableFloat
{
let mut buf = [0; 1024]; // enough for f32 and f64
let mut parts = [flt2dec::Part::Zero(0); 16];
let mut parts = [flt2dec::Part::Zero(0); 5];
let formatted = flt2dec::to_exact_fixed_str(flt2dec::strategy::grisu::format_exact,
*num, sign, precision,
false, &mut buf, &mut parts);
@ -34,7 +34,7 @@ fn float_to_decimal_common_shortest<T>(fmt: &mut Formatter,
where T: flt2dec::DecodableFloat
{
let mut buf = [0; flt2dec::MAX_SIG_DIGITS]; // enough for f32 and f64
let mut parts = [flt2dec::Part::Zero(0); 16];
let mut parts = [flt2dec::Part::Zero(0); 5];
let formatted = flt2dec::to_shortest_str(flt2dec::strategy::grisu::format_shortest,
*num, sign, 0, false, &mut buf, &mut parts);
fmt.pad_formatted_parts(&formatted)
@ -68,7 +68,7 @@ fn float_to_exponential_common_exact<T>(fmt: &mut Formatter, num: &T,
where T: flt2dec::DecodableFloat
{
let mut buf = [0; 1024]; // enough for f32 and f64
let mut parts = [flt2dec::Part::Zero(0); 16];
let mut parts = [flt2dec::Part::Zero(0); 7];
let formatted = flt2dec::to_exact_exp_str(flt2dec::strategy::grisu::format_exact,
*num, sign, precision,
upper, &mut buf, &mut parts);
@ -84,7 +84,7 @@ fn float_to_exponential_common_shortest<T>(fmt: &mut Formatter,
where T: flt2dec::DecodableFloat
{
let mut buf = [0; flt2dec::MAX_SIG_DIGITS]; // enough for f32 and f64
let mut parts = [flt2dec::Part::Zero(0); 16];
let mut parts = [flt2dec::Part::Zero(0); 7];
let formatted = flt2dec::to_shortest_exp_str(flt2dec::strategy::grisu::format_shortest, *num,
sign, (0, 0), upper, &mut buf, &mut parts);
fmt.pad_formatted_parts(&formatted)