PHP BC Math (Binary Calculator)
Introduction
The Binary Calculator can be used to calculate with numbers of any size and precision up to 2147483647-1 decimals, in string format. The Binary Calculator is more precise than the float calculation of PHP.
Syntax
- string bcadd ( string $left_operand , string $right_operand [, int $scale = 0 ] )
- int bccomp ( string $left_operand , string $right_operand [, int $scale = 0 ] )
- string bcdiv ( string $left_operand , string $right_operand [, int $scale = 0 ] )
- string bcmod ( string $left_operand , string $modulus )
- string bcmul ( string $left_operand , string $right_operand [, int $scale = 0 ] )
- string bcpowmod ( string $left_operand , string $right_operand , string $modulus [, int $scale = 0 ] )
- bool bcscale ( int $scale )
- string bcsqrt ( string $operand [, int $scale = 0 ] )
- string bcsub ( string $left_operand , string $right_operand [, int $scale = 0 ] )
Parameters
| bcadd | Add two arbitrary precision numbers. |
|---|---|
left_operand | The left operand, as a string. |
right_operand | The right operand, as a string. |
scale | A optional parameter to set the number of digits after the decimal place in the result. |
| bccomp | Compare two arbitrary precision numbers. |
left_operand | The left operand, as a string. |
right_operand | The right operand, as a string. |
scale | A optional parameter to set the number of digits after the decimal place which will be used in the comparison. |
| bcdiv | Divide two arbitrary precision numbers. |
left_operand | The left operand, as a string. |
right_operand | The right operand, as a string. |
scale | A optional parameter to set the number of digits after the decimal place in the result. |
| bcmod | Get modulus of an arbitrary precision number. |
left_operand | The left operand, as a string. |
modulus | The modulus, as a string. |
| bcmul | Multiply two arbitrary precision numbers. |
left_operand | The left operand, as a string. |
right_operand | The right operand, as a string. |
scale | A optional parameter to set the number of digits after the decimal place in the result. |
| bcpow | Raise an arbitrary precision number to another. |
left_operand | The left operand, as a string. |
right_operand | The right operand, as a string. |
scale | A optional parameter to set the number of digits after the decimal place in the result. |
| bcpowmod | Raise an arbitrary precision number to another, reduced by a specified modulus. |
left_operand | The left operand, as a string. |
right_operand | The right operand, as a string. |
modulus | The modulus, as a string. |
scale | A optional parameter to set the number of digits after the decimal place in the result. |
| bcscale | Set default scale parameter for all bc math functions. |
scale | The scale factor. |
| bcsqrt | Get the square root of an arbitrary precision number. |
operand | The operand, as a string. |
scale | A optional parameter to set the number of digits after the decimal place in the result. |
| bcsub | Subtract one arbitrary precision number from another. |
left_operand | The left operand, as a string. |
right_operand | The right operand, as a string. |
scale | A optional parameter to set the number of digits after the decimal place in the result. |
Remarks
For all BC functions, if the scale parameter is not set, it defaults to 0, which will make all operations integer operations.
