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IV. BCMath Arbitrary Precision Mathematics Functions

Introduction

For arbitrary precision mathematics PHP offers the Binary Calculator which supports numbers of any size and precision, represented as strings.

Requirements

Since PHP 4.0.4, libbcmath is bundled with PHP. You don't need any external libraries for this extension.

Installation

In PHP 4, these functions are only available if PHP was configured with --enable-bcmath. In PHP 3, these functions are only available if PHP was not configured with --disable-bcmath.

Runtime Configuration

This extension does not define any configuration directives.

Resource Types

This extension does not define any resource types.

Predefined Constants

This extension does not define any constants.

Table of Contents
bcadd -- Add two arbitrary precision numbers
bccomp -- Compare two arbitrary precision numbers
bcdiv -- Divide two arbitrary precision numbers
bcmod --  Get modulus of an arbitrary precision number
bcmul -- Multiply two arbitrary precision number
bcpow --  Raise an arbitrary precision number to another
bcscale --  Set default scale parameter for all bc math functions
bcsqrt --  Get the square root of an arbitrary precision number
bcsub --  Subtract one arbitrary precision number from another
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