ed/Odin
1
0
Fork 0
mirror of https://github.com/Ed94/Odin.git synced 2026-08-06 15:48:51 +00:00
Code Issues Packages Projects Releases Wiki Activity

Update fixed.odin

Browse Source
This commit is contained in:
Justin Snyder
2023-07-15 23:43:14 -06:00
committed by GitHub
parent 204c0fa4d8
commit d4194962b0
1 changed files with 7 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
core/math/fixed/fixed.odin
+7 -5
View File
@@ -29,13 +29,13 @@ Fixed52_12 :: distinct Fixed(i64, 12)
init_from_f64 :: proc(x: ^$T/Fixed($Backing, $Fraction_Width), val: f64) { init_from_f64 :: proc(x: ^$T/Fixed($Backing, $Fraction_Width), val: f64) {
i, f := math.modf(val) i, f := math.modf(math.abs(val))
x.i = Backing(f * (1<<Fraction_Width)) x.i = Backing(f * (1<<Fraction_Width))
x.i &= 1<<Fraction_Width - 1 x.i &= 1<<Fraction_Width - 1
x.i |= Backing(i) << Fraction_Width x.i |= Backing(i) << Fraction_Width
if val < 0 do x.i *= -1
} }
init_from_parts :: proc(x: ^$T/Fixed($Backing, $Fraction_Width), integer, fraction: Backing) { init_from_parts :: proc(x: ^$T/Fixed($Backing, $Fraction_Width), integer, fraction: Backing) {
i, f := math.modf(val) i, f := math.modf(val)
x.i = fraction x.i = fraction
@@ -44,9 +44,11 @@ init_from_parts :: proc(x: ^$T/Fixed($Backing, $Fraction_Width), integer, fracti
} }
to_f64 :: proc(x: $T/Fixed($Backing, $Fraction_Width)) -> f64 { to_f64 :: proc(x: $T/Fixed($Backing, $Fraction_Width)) -> f64 {
res := f64(x.i >> Fraction_Width) sign := -1.0 if x.i < 0 else 1.0
res += f64(x.i & (1<<Fraction_Width-1)) / f64(1<<Fraction_Width) num := math.abs(x.i)
return res res := f64(num >> Fraction_Width)
res += f64(num & (1<<Fraction_Width-1)) / f64(1<<Fraction_Width)
return res * sign
} }