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Minor remquof improvemnts (#306)

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This commit is contained in:
Max Graey
2018-10-27 19:27:54 +03:00
committed by Daniel Wirtz
parent 83fa12164f
commit e58582e9e9
3 changed files with 252 additions and 305 deletions
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21
std/assembly/math.ts
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@ -1137,7 +1137,6 @@ export namespace NativeMath {
var ex = <i64>(ux >> 52 & 0x7FF);
var ey = <i64>(uy >> 52 & 0x7FF);
var sx = <i32>(ux >> 63);
var sy = <i32>(uy >> 63);
if (uy << 1 == 0 || ex == 0x7FF || isNaN(y)) return (x * y) / (x * y);
if (ux << 1 == 0) return x;
var uxi = ux;
@ -1162,7 +1161,7 @@ export namespace NativeMath {
return x;
}
let i: u64;
for (; ex > ey; ex--) {
for (; ex > ey; --ex) {
i = uxi - uy;
if (i >> 63 == 0) {
uxi = i;
@ -1192,7 +1191,7 @@ export namespace NativeMath {
uxi >>= -ex + 1;
}
x = reinterpret<f64>(uxi);
if (sy) y = -y;
y = builtin_abs<f64>(y);
var x2 = x + x;
if (ex == ey || (ex + 1 == ey && (x2 > y || (x2 == y && <bool>(q & 1))))) {
x -= y;
@ -2191,7 +2190,6 @@ export namespace NativeMathf {
var ex = <i32>(ux >> 23 & 0xFF);
var ey = <i32>(uy >> 23 & 0xFF);
var sx = <i32>(ux >> 31);
var sy = <i32>(uy >> 31);
var uxi = ux;
if (uy << 1 == 0 || ex == 0xFF || isNaN(y)) return (x * y) / (x * y);
if (ux << 1 == 0) return x;
@ -2216,11 +2214,11 @@ export namespace NativeMathf {
return x;
}
let i: u32;
for (; ex > ey; ex--) {
for (; ex > ey; --ex) {
i = uxi - uy;
if (i >> 31 == 0) {
uxi = i;
q++;
++q;
}
uxi <<= 1;
q <<= 1;
@ -2228,11 +2226,11 @@ export namespace NativeMathf {
i = uxi - uy;
if (i >> 31 == 0) {
uxi = i;
q++;
++q;
}
if (uxi == 0) ex = -30;
else {
let shift = <i32>builtin_clz<u32>(uxi << 8);
let shift = builtin_clz<i32>(uxi << 8);
ex -= shift;
uxi <<= shift;
}
@ -2246,10 +2244,11 @@ export namespace NativeMathf {
uxi >>= -ex + 1;
}
x = reinterpret<f32>(uxi);
if (sy) y = -y;
if (ex == ey || (ex + 1 == ey && (<f32>2 * x > y || (<f32>2 * x == y && <bool>(q & 1))))) {
y = builtin_abs<f32>(y);
var x2 = x + x;
if (ex == ey || (ex + 1 == ey && (<f32>x2 > y || (<f32>x2 == y && <bool>(q & 1))))) {
x -= y;
q++;
// q++;
}
return sx ? -x : x;
}