In the following table,popular mathematical functions are summarized.Also note that certain functions do not require the Math. prefix.
A D V E R T I S E M E N T
Function
Use
Math.Abs()
Returns the absolute value.
Math.Abs(-10) returns 10.
Math.Ceiling()
Returns an integer that is greater than or equal to a number.
Math.Ceiling(5.333) returns
6.
Fix()
Returns the integer portion of a number.
Fix(5.3333) returns 5.
Math.Floor()
Returns an integer that is less than or equal to a number.
Fix(5.3333) returns 5.
Int()
Returns the integer portion of a number.
Int(5.3333) returns 5.
Math.Max()
Returns the larger of two numbers.
Math.Max(5,7) returns 7.
Math.Min()
Returns the smaller of two numbers.
Math.Min(5,7) returns 5.
Math.Pow()
Returns a number raised to a power.
Math.Pow(12,2) returns 144.
Rnd()
Returns a random number between 0 and 1. Used in conjunction with
Randomizestatement to initialize the random
number generator.
Math.Round()
Rounds a number to a specified number of decimal places. Rounds up
on .5.
Math.Round(1.1234567,5) returns
1.12346.
Math.Sign()
Returns the sign of a number. Returns -1
if negative and 1 if positive.
Math.Sign(-5) returns -1.
Math.Sqrt()
Returns the square root of a positive number.
Math.Sqrt(144) returns 12.
Several built-in string functions perform string manipulations to augment simple concatenation
with the "&" operator and these functions are summarized in the following table.
Function
Use
Asc()
Returns the character code of the first character of a string.
Asc("A") returns 65.
Chr()
Returns the display character of a character code.
Chr(65) returns "A".
GetChar()
Returns the character at a specified position in a string, counting
from 1.
GetChar("This is a string", 7) returns
"s".
InStr()
Returns the starting position in a string of a substring, counting
from 1.
InStr("This is a string", "string") returns
11.
InStrRev()
Returns the starting position in a string of a substring, searching
from the end of the string.
InStr("This is a string", "string") returns
11.
LCase()
Returns the lower-case conversion of a string.
LCase("THIS IS A STRING") returns
"this is a string".
Left()
Returns the left-most specified number of characters of a string.
Left("This is a string", 4) returns
"This".
Len()
Returns the length of a string.
Len("This is a string") returns
16.
LTrim()
Removes any leading spaces from a string.
LTrim(" This is a string") returns
"This is a string".
Mid()
Returns a substring from a string, specified as the starting
position (counting from 1) and the number of characters.
Mid("This is a string", 6, 4) returns
"is a".
Replace()
Replaces all occurences of a substring in a string.
Replace("This is a string", " s", " longer s")
returns "This are a longer string" (replaces
an "s" preceded by a blank space).
Right()
Returns the right-most specified number of characters of a string.
Right("This is a string", 6) returns
"string".
RTrim()
Removes any trailing spaces from a string.
RTrim("This is a string ") returns
"This is a string".
Str()
Returns the string equivalent of a number.
Str(100) returns "100".
Space()
Fills a string with a given number of spaces.
"This" & Space(5) & "string" returns
"This string".
StrComp()
Compares two strings. Return values are 0 (strings are equal), 1
(first string has the greater value), or -1 (second string has the
greater value) based on sorting sequence.
StrComp("This is a string", "This string")
returns -1.
StrReverse()
Reverses the characters in a string.
StrReverse("This is a string") returns
"gnirts a si sihT".
Trim()
Removes any leading and trailing spaces from a string.
Trim(" This is a string ") returns
"This is a string".
UCase()
Returns the upper-case conversion of a string.
UCase("This is a string") returns
"THIS IS A STRING".
Val()
Converts a numeric expression to a number.
Val( (1 + 2 + 3)^2 ) returns
36.
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