The BigInt.asIntN static method clamps a BigInt value to a signed integer value, and returns that value.
BigInt.asIntN()
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Syntax
BigInt.asIntN(bits, bigint);
Parameters
-
bits -
The amount of bits available for the integer size.
-
bigint -
The BigInt value to clamp to fit into the supplied bits.
Returns
The value of bigint modulo 2^bits, as a signed integer.
Examples
Staying in 64-bit ranges
The BigInt.asIntN() method can be useful to stay in the range of 64-bit arithmetic.
const max = 2n ** (64n - 1n) - 1n; BigInt.asIntN(64, max); // ↪ 9223372036854775807n BigInt.asIntN(64, max + 1n); // ↪ -9223372036854775808n // negative because of overflow
Specifications
| Specification |
|---|
| ECMAScript Language Specification # sec-bigint.asintn |
Browser compatibility
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
asIntN |
67
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79
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68
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No
|
54
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14
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67
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67
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68
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48
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14
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9.0
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1.0
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10.4.0
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See also
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt/asIntN
