# almost-equal

Test if two floats are almost equal

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almost-equal
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almost-equal ============ Checks when two floats are almost equal. Use === First install using npm:
``npm install almost-equal``
Then use as follows: ```javascript var almostEqual = require("almost-equal") var a = 100 , b = 100 + 1e-12 //Check if a == b up to float precision console.log(almostEqual(a, b, almostEqual.FLTEPSILON, almostEqual.FLTEPSILON)) //Check if a == b up to double precision console.log(almostEqual(a, b, almostEqual.DBLEPSILON, almostEqual.DBLEPSILON)) ```

### `almostEqual(a, b[, absoluteTolerance [, relativeTolerance]])`

Checks if two floats are within the given tolerances of one another using the formula:
``|a - b| < max(absoluteTolerance, min(|a|, |b|) * relativeTolerance)``
• `a` and `b` are the two numbers to comapre
• `absoluteTolerance` is a fixed minimal tolerance (set to 0 to ignore)
• `relativeTolerance` is a tolerance that scales with a/b (set to 0 to ignore)
Returns `true` if `a` and `b` are approximately equal. If tolerance argument is omitted, `almostEqual.DBL_EPSILON` value is used by default.

### `almostEqual.FLT_EPSILON`

Floating point (32-bit) epsilon

### `almostEqual.DBL_EPSILON`

Double precision (64-bit) epsilon Credits ======= (c) 2013 Mikola Lysenko. MIT License