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Factor handbook > The language > Numbers > Arithmetic > Number protocol

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Vocabulary
math

Inputs and outputs
xa number
ya number
za number


Word description
Subtracts y from x.
Subtraction of fixnums may overflow and convert the result to a bignum.
Subtraction of bignums always yields a bignum.
Subtraction of floats always yields a float.
Subtraction of ratios and complex numbers proceeds using the relevant mathematical rules.


Definition


Methods