Some methods of handling floating-point numbers in PHP are recorded

Some methods of handling floating-point numbers in PHP are recorded

Do not use the equal sign, greater than, plus, minus, multiply, divide, etc in the program to operate floating-point numbers, and if you need to do this, use the following BC series functions. To ensure accuracy and accuracy.

Two high-precision number comparison sizes

$left_operand$right_operand$scale ] )

• l e f t = Right returns 0
• l e f t < Right Returns-1
• l e f t > Right returns 1
• $scale the precision to compare, that is, how many digits after the decimal point

Two high-precision numbers added

$left_operand$right_operand$scale ] )

• Returns several decimals after the $scale is added

Subtract two high-precision numbers

$left_operand$right_operand$scale ] )

• Returns a few decimals after $scale subtraction

Two high-precision numbers for redundancy/modulus

$left_operand$modulus )

Divide two high-precision numbers

$left_operand$right_operand$scale ] )

• After dividing $scale, return several decimals

Multiply two high-precision numbers

$left_operand$right_operand$scale ] )

• Returns several decimals after the $scale is multiplied

The quadratic value of two high-precision numbers

$left_operand$right_operand$scale ] )

• $scale time, return several decimals

The square root of high precision number

$operand$scale ] )

• $scale return several decimals

Set the number of decimal places for the BC function

$scale )

• $scale several decimals

Some methods of handling floating-point numbers in PHP are recorded