Number Functions

XPath includes five functions that operate on numbers:

• floor(number) returns the greatest integer smaller than the number

• ceiling(number) returns the smallest integer greater than the number

• round(number) rounds the number to the nearest integer

• sum(number) returns the sum of its arguments

• format-number(number, format-string) returns the string form of a number formatted according to the specified format-string as if by Java 1.1's java.text.DecimalFormat class