bccomp(3) [php man page]

BCCOMP(3)								 1								 BCCOMP(3)

bccomp - Compare two arbitrary precision numbers

SYNOPSIS

       int bccomp (string  $left_operand, string  $right_operand, [int	$scale = int])

DESCRIPTION

	Compares the $left_operand to the $right_operand and returns the result as an integer.

PARAMETERS

	      o $left_operand
		- The left operand, as a string.

	      o $right_operand
		- The right operand, as a string.

	      o $scale
		- The optional $scale parameter is used to set the number of digits after the decimal place which will be used in the comparison.

RETURN VALUES

	Returns 0 if the two operands are equal, 1 if the $left_operand is larger than the $right_operand, -1 otherwise.

EXAMPLES

       Example #1

	      bccomp(3) example

	      <?php

	      echo bccomp('1', '2') . "
";   // -1
	      echo bccomp('1.00001', '1', 3); // 0
	      echo bccomp('1.00001', '1', 5); // 1

	      ?>

PHP Documentation Group 														 BCCOMP(3)

BCPOW(3)								 1								  BCPOW(3)

bcpow - Raise an arbitrary precision number to another

SYNOPSIS

       string bcpow (string  $left_operand, string  $right_operand, [int  $scale])

DESCRIPTION

	Raise $left_operand to the power $right_operand.

PARAMETERS

	      o $left_operand
		- The left operand, as a string.

	      o $right_operand
		- The right operand, as a string.

	      o $
		scale  -This  optional	parameter  is used to set the number of digits after the decimal place in the result. You can also set the
		global default scale for all functions by using bcscale(3).

RETURN VALUES

	Returns the result as a string.

EXAMPLES

       Example #1

	      bcpow(3) example

	      <?php

	      echo bcpow('4.2', '3', 2); // 74.08

	      ?>

NOTES

       Note

	      bcpow(3) may return a result with fewer digits after the decimal point than the $scale parameter would indicate.	This  only  occurs
	      when the result doesn't require all of the precision allowed by the $scale. For example:

	      Example #2

		     bcpow(3) scale example

		     <?php
		     echo bcpow('5', '2', 2);	  // prints "25", not "25.00"
		     ?>

SEE ALSO

       bcpowmod(3), bcsqrt(3).

PHP Documentation Group 														  BCPOW(3)