DATETIME and INTERVAL library functions

You must use the following library functions for the datetime and interval data types to perform all operations on those types of values. The following C functions are available in to handle datetime and interval host variables.

Function name	Description	See
dtaddinv()	Adds an interval value to a datetime value	The dtaddinv() function
dtcurrent()	Gets the current date and time	The dtcurrent() function
dtcvasc()	Converts an ANSI-compliant character string to a datetime value	The dtcvasc() function
dtcvfmtasc()	Converts a character string with a specified format to a datetime value	The dtcvfmtasc() function
dtextend()	Changes the qualifier of a datetime value	The dtextend() function
dtsub()	Subtracts one datetime value from another	The dtsub() function
dtsubinv()	Subtracts an interval value from a datetime value	The dtsubinv() function
dttoasc()	Converts a datetime value to an ANSI-compliant character string	The dttoasc() function
dttofmtasc()	Converts a datetime value to a character string with a specified format	The dttofmtasc() function
incvasc()	Converts an ANSI-compliant character string to an interval value	The incvasc() function
incvfmtasc()	Converts a character string with a specified format to an interval value	The incvfmtasc() function
intoasc()	Converts an interval value to an ANSI-compliant character string	The intoasc() function
intofmtasc()	Converts an interval value to a character string with a specified format	The intoasc() function
invdivdbl()	Divides an interval value by a numeric value	The intofmtasc() function
invdivinv()	Divides an interval value by another interval value	The invdivdbl() function
invextend()	Extends an interval value to a different interval qualifier	The invdivinv() function
invmuldbl()	Multiplies an interval value by a numeric value	The invextend() function