4-337 Detailed Explanation of Functions
4MELFA-BASIC IV
Sqr
[Function]
Calculates the square root of an equation value.
[Format]
[Reference Program]
1 M1=Sqr(2) ' 1.414214 is assigned to M1.
[Explanation]
(1) Calculates the square root of the value to which the given equation evaluates.
(2) An error will be generated if the equation given by the argument evaluates to a negative value.
Strpos
[Function]
Searches for a specified string in a string.
[Format]
[Reference Program]
1 M1=Strpos("ABCDEFG","DEF") ' 4 is assigned to M1.
[Explanation]
(1) Returns the position of the first occurrence of the string specified by argument 2 from the string specified
by argument 1.
(2) An error will be generated if the length of the argument 2 is 0.
(3) For instance, if argument 1 is "ABCDEFG" and argument 2 is "DEF", 4 will be returned.
(4) If the search string could not be found, 0 will be returned.
(5) It is not possible to describe a function that contains an argument in <Character String 1> and <Charac-
ter String 2>. If such a function is described, an error will be generated during execution.
<Numeric Variable>=Sqr(<Equation>)
<Numeric Variable>=Strpos(<Character String 1>, <Character String 2>)
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