Type:
Class

mathn

mathn is a library for changing the way Ruby does math. If you need more precise rounding with multiple division or exponentiation operations, then mathn is the right tool.

Without mathn:

3 / 2 => 1 # Integer

With mathn:

3 / 2 => 3/2 # Rational

mathn features late rounding and lacks truncation of intermediate results:

Without mathn:

20 / 9 * 3 * 14 / 7 * 3 / 2 # => 18

With mathn:

20 / 9 * 3 * 14 / 7 * 3 / 2 # => 20

When you require 'mathn', the libraries for Prime, CMath, Matrix and Vector are also loaded.

Copyright

Author: Keiju ISHITSUKA (SHL Japan Inc.)

Document-class: FloatDomainError

Raised when attempting to convert special float values (in particular infinite or NaN) to numerical classes which don't support them.

Float::INFINITY.to_r

raises the exception:

FloatDomainError: Infinity
div

num.div(numeric) â integer Instance Public methods Uses / to

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magnitude

num.magnitude â numeric Instance Public methods Returns the absolute value

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%

num.modulo(numeric) â real Instance Public methods

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real

num.real â self Instance Public methods Returns self.

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i

num.i â Complex(0,num) Instance Public methods Returns the corresponding

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coerce

num.coerce(numeric) â array Instance Public methods If aNumeric

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imag

num.imag â 0num.imaginary â 0 Instance Public methods Returns

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numerator

num.numerator â integer Instance Public methods Returns the numerator.

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step

num.step(limit[, step]) {|i| block } â selfnum.step(limit[, step]) â an_enumerator Instance

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angle

num.angle â 0 or float Instance Public methods Returns 0 if the value is positive

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