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std: explicitly cast indices to usize

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This is needed for platforms where usize=u16, eg. MSP430.
This commit is contained in:
LemonBoy 2020-12-09 16:48:41 +01:00
parent afd491c07e
commit 6f220bb7ca
1 changed files with 3 additions and 3 deletions
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6
lib/std/math/exp2.zig
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@ -95,7 +95,7 @@ fn exp2_32(x: f32) f32 {
uf -= redux; uf -= redux;
const z: f64 = x - uf; const z: f64 = x - uf;
var r: f64 = exp2ft[i_0]; var r: f64 = exp2ft[@intCast(usize, i_0)];
const t: f64 = r * z; const t: f64 = r * z;
r = r + t * (P1 + z * P2) + t * (z * z) * (P3 + z * P4); r = r + t * (P1 + z * P2) + t * (z * z) * (P3 + z * P4);
return @floatCast(f32, r * uk); return @floatCast(f32, r * uk);
@ -418,8 +418,8 @@ fn exp2_64(x: f64) f64 {
// r = exp2(y) = exp2t[i_0] * p(z - eps[i]) // r = exp2(y) = exp2t[i_0] * p(z - eps[i])
var z = x - uf; var z = x - uf;
const t = exp2dt[2 * i_0]; const t = exp2dt[@intCast(usize, 2 * i_0)];
z -= exp2dt[2 * i_0 + 1]; z -= exp2dt[@intCast(usize, 2 * i_0 + 1)];
const r = t + t * z * (P1 + z * (P2 + z * (P3 + z * (P4 + z * P5)))); const r = t + t * z * (P1 + z * (P2 + z * (P3 + z * (P4 + z * P5))));
return math.scalbn(r, ik); return math.scalbn(r, ik);