Variable Name
Size
Description
xval
double
An input variable for the AKISPL function.
- Generally, this variable is time or a function that returns a real number.
zval
double
An input variable for the AKISPL function.
- The second variable is necessary for three dimensional spline functions.
- This variable must be a function that returns a real number. Otherwise, 0 is applied.
identity
int
The id of spline.
order
int
The interpolation method for the functions (return the value if 0, return calculation for 1st order differential equation if 1)
1) order = 0
2) order = 1
array
double
error
logical / int
If an error is encountered in invoking Predefined subroutine, this variable becomes true. This variable must be declared as a logical variable.