What does the bc prefix refer to in php bccomp
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The bc prefix in php bccomp indicates that the function belongs to the BC library of high-precision operations, while the bccomp function compares two numbers of arbitrary precision with the syntax "bccomp(string $num1, string $num2,): int".
Operating environment: Windows 7, PHP 7.1, Dell G3
What does the bc prefix mean in php bccomp?
PHP BC library for high-precision operations.
bccomp
bccomp -Compare two numbers of arbitrary precision
description
bccomp(string $num1, string $num2, ? int $scale = null): int
Compares num1 and num2 and returns the result as an integer number.
parameters
num1
The operand on the left is a string.
num2
The operand on the right is a string.
scale
The optional scale parameter is used to set the indicator number in the decimal point used for comparison.
return value
Returns 0 if two numbers are equal; 1 if num1 is greater than num2;-1 otherwise.
Related Introduction:
BC mathematical functions include:
bcadd -Addition of two numbers of arbitrary precision
bccomp -Compare two numbers of arbitrary precision
bcdiv -Two arbitrary precision numerical division calculations
bcmod -arbitrary precision digital modulo
bcmul -Multiplication of two arbitrary precision numbers
bcpow -Power of an arbitrary precision number
bcpowmod - Raise an arbitrary precision number to another, reduced by a specified modulus
bcscale -sets/gets the default decimal places reserved for all bc math functions
bcsqrt -the square root of an arbitrary precision number
bcsub -Subtraction of two arbitrary precision numbers
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