Reference Manual

Mathematics functions

These are some of the more essential mathematical routines in Power-4gl.

Similar

Determines whether two numbers are close to each other by a factor or a difference.

4 parameters:
Value1: The first value to be compared.
Value2: The second value to be compared.
Difference: If the values differ by this amount or less, then they are considered similar. This is an optional parameter.
Factor: If the values differ by this factor or less, then they are considered similar. This is an optional parameter.

1 return value:
Verdict: True if the values are considered similar, otherwise false.

Abs

Returns the absolute value of a number.

1 parameters:
Value: The number to be evaluated.

1 return value:
Result: The absolute value of the number.

Round

Rounding of a decimal number (up or down) to a given decimal place.

2 parameters:
Value: The number to be rounded.
Place: The decimal place to be rounded to. Zero means rounding to an whole number. A positive value moves the decimal place to the left, thus rounding to higher orders of magnitude. A negative value moves the decimal place to the right.

1 return value:
Result: The rounded number.

Power

Exponentiation, with the capability of using fractions in the exponent (the built in exponentiation operator in 4gl allows only integer exponents).

2 parameters:
Value: The number to be exponentiated.
Exponent: The number (can be a fraction) to use as an exponent.

1 return value:
Result: The exponentiated value.