Operating system services are offered through system calls. System calls are “gates” into the kernel implemented with software interrupts. Software interrupts are interrupts produced by a program and ...

Portable functions are documented in SAS Language Reference: Dictionary. This chapter includes detailed information about the SAS functions and CALL routines that are specific to OS/390 or that have ...

For example, when reading a file, use the open system call to create a file descriptor for inputting and outputting the file, and then call the read system call to read the file data from the file ...

SAS Functions under OS/2 SAS functions and Call routines return a value from a computation or system operation. Most functions and Call routines use arguments that are supplied by the user as input.