ToFloatPower (Float function)

Raise number to a floating point power (Float class)

The ToFloatPower intrinsic function returns a number that is the method object value "raised to the float power" specified by the method argument.

Syntax

%number = float:ToFloatPower( exponent)

Syntax terms

%number	A numeric variable to contain the method result.
float	A Float value.
exponent	A Float value.

Usage notes

• If float is equal to 0, and float is less than or equal to 0, the request is cancelled.
• If float is less than 0, and float is not 0, the request is cancelled. This is so because, unlike ToIntegerPower, the computation algorithm involves the log of float.
• ToFloatPower uses good-fit techniques that sometimes produce slightly different results from ToIntegerPower with the same inputs.
• ToFloatPower is available as of "Sirius Mods" Version 7.3.

Examples

1. For example:

   begin printText {~} = {3:toFloatPower(6)} printText {~} = {3:toIntegerPower(6)} printText {~} = {10:toFloatPower(7)} printText {~} = {10:toIntegerPower(7)} end

   displays

   3:toFloatPower(6) = 728.999999999999 3:toIntegerPower(6) = 729 10:toFloatPower(7) = 9999999.99999997 10:toIntegerPower(7) = 10000000

   Consequently, you should generally use ToIntegerPowerunless you really are working with non-integer powers.

See also

• ToFloatPower is an object-oriented version of the $RXPR function.

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