RSC/MP Programming Manual

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Application Development Formatting and Converting Data
Formatting and Converting Data
The integer byte order for data on NonStop systems does not always match the byte
order of data on workstations. Figure 6-1 shows the byte order of the integers on the
NonStop host and on PC workstations.
Figure 6-1. Integer Byte Order
NonS t op Host I BM-compatible PC
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CDT007
RSC/MP provides these API functions to swap integer data between workstation and
host formats:
The RscSwapShort function converts 2-byte data.
The RscSwapLong function converts 4-byte data.
For UNIX workstations that have the same data format as the NonStop host, these API
functions do not change the data.
RSC/MP does not support these types of data conversion; applications must convert
these data types before calling RSC/MP:
COBOL string to C language string — Trailing spaces versus terminating NULL.
Floating point — NonStop system format versus IEEE format.
Data alignment within structures.
Ranges of values — C language signed integer up to 32767 and COBOL ―PIC
S9(4) COMP‖ up to 9999.
National language support — 7-bit substitution.
See Appendix B, Language Conversion for RSC/MP Function Calls, for more
information about syntax equivalents.
HP NonStop Remote Server Call (RSC/MP) Programming Manual — 522360-006
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