pitrou commented on code in PR #40960:
URL: https://github.com/apache/arrow/pull/40960#discussion_r1551343433
##########
js/test/generate-test-data.ts:
##########
@@ -750,32 +747,23 @@ function createDate32(length: number, nullBitmap:
Uint8Array, values: (number |
}
function createDate64(length: number, nullBitmap: Uint8Array, values: (number
| null)[] = []) {
- const data = new Int32Array(length * 2).fill(0);
+ const data = new BigInt64Array(length).fill(0n);
const data32 = createDate32(length, nullBitmap, values);
iterateBitmap(length, nullBitmap, (i, valid) => {
if (valid) {
- const value = data32[i] * 86400000;
- const hi = Math.trunc(value / 4294967296);
- const lo = Math.trunc(value - 4294967296 * hi);
- values[i] = value;
- data[i * 2 + 0] = lo;
- data[i * 2 + 1] = hi;
+ data[i] = BigInt(data32[i] * 86400000);
}
});
return data;
}
function createTimestamp(length: number, nullBitmap: Uint8Array, multiple:
number, values: (number | null)[] = []) {
const mult = 86400 * multiple;
- const data = new Int32Array(length * 2).fill(0);
+ const data = new BigInt64Array(length).fill(0n);
const data32 = createDate32(length, nullBitmap, values);
Review Comment:
This is a bit weird, don't you want to create timestamp data that does not
represent whole days?
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