60 lines
1.5 KiB
Markdown
60 lines
1.5 KiB
Markdown
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<!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. -->
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# Function isZero
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Test whether a value is zero.
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The function can check for zero for types `number`, `BigNumber`, `Fraction`,
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`Complex`, and `Unit`.
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The function is evaluated element-wise in case of Array or Matrix input.
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## Syntax
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```js
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math.isZero(x)
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```
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### Parameters
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Parameter | Type | Description
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--------- | ---- | -----------
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`x` | number | BigNumber | Complex | Fraction | Unit | Array | Matrix | Value to be tested
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### Returns
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Type | Description
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---- | -----------
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boolean | Returns true when `x` is zero. Throws an error in case of an unknown data type.
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### Throws
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Type | Description
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---- | -----------
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## Examples
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```js
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math.isZero(0) // returns true
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math.isZero(2) // returns false
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math.isZero(0.5) // returns false
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math.isZero(math.bignumber(0)) // returns true
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math.isZero(math.fraction(0)) // returns true
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math.isZero(math.fraction(1,3)) // returns false
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math.isZero(math.complex('2 - 4i') // returns false
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math.isZero(math.complex('0i') // returns true
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math.isZero('0') // returns true
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math.isZero('2') // returns false
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math.isZero([2, 0, -3]') // returns [false, true, false]
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```
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## See also
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[isNumeric](isNumeric.md),
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[isPositive](isPositive.md),
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[isNegative](isNegative.md),
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[isInteger](isInteger.md)
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