QB64/qbjs
QB64/qbjs
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Code Issues Releases Wiki Activity

Debugged RND.

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This commit is contained in:
William Barnes 2022-05-30 16:06:18 -04:00
parent 530b53c224
commit fdfbf2816f
1 changed files with 12 additions and 17 deletions
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27
qb.js
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@ -1635,8 +1635,8 @@ var QB = new function() {
const buffer = new ArrayBuffer(8);
const view = new DataView(buffer);
var m;
if (n == undefined) { // TODO: implement prompt
view.setFloat64(0, 0, false); // assumes n=0
if (n == undefined) { // TODO: implement user prompt case
view.setFloat64(0, 0, false); // assumes n=0 for now
m = view.getUint32(0);
m ^= (m >> 16);
_rndSeed = ((m & 0xffff)<<8) | (_rndSeed & 0xff);
@ -1653,21 +1653,16 @@ var QB = new function() {
}
this.func_Rnd = function(n) {
if (n == undefined) { // Normal use.
if (n == undefined) {n = 1;}
if (n != 0) {
if (n < 0) {
const buffer = new ArrayBuffer(8);
const view = new DataView(buffer);
view.setFloat32(0, n, false);
var m = view.getUint32(0);
_rndSeed = (m & 0xFFFFFF) + ((m & 0xFF000000) >>> 24);
}
_rndSeed = (_rndSeed * 16598013 + 12820163) & 0xFFFFFF;
} else if (n > 0) { // Identical to above?
_rndSeed = (_rndSeed * 16598013 + 12820163) & 0xFFFFFF;
//} else if (n == 0) { // Repeat last value, so change nothing.
} else if (n < 0) { // buggy
/*
m=*((uint32*)&n);
rnd_seed=(m&0xFFFFFF)+((m&0xFF000000)>>24);
*/
const buffer = new ArrayBuffer(8);
const view = new DataView(buffer);
view.setFloat64(0, n, false);
var m = view.getUint32(0);
_rndSeed = (m & 0xFFFFFF) + ((m & 0xFF000000)>>24);
}
return _rndSeed / 0x1000000;
}