Syntax, linkage and programming considerations

Programming language definitions are provided in the following languages:

In C (HWICIC) in data set SYS1.SIEAHDRV.H. Miscellaneous C constants are defined in HWIZHAPI in the same data set.
In REXX (HWICIREX) in data set SYS1.MACLIB. Miscellaneous REXX constants are defined in HWIC2REX in the same data set.
Note:
1. If the REXX exec is running under System REXX using the TSO=YES environment, these include files may be read in at the time of execution by the REXX exec. A simple programming example that reads the values into the REXX exec through the use of the EXECIO function is provided in the IBM-supplied REXX samples. See Programming Examples for further information.
2. If the REXX exec is running under System REXX using the TSO=NO environment, the definitions in these include files may be copied into the REXX exec.
In assembler (HWICIASM) in data set SYS1.MACLIB. Miscellaneous assembler constants are defined in HWIC2ASM in the same data set.