Q44389: Only Certain C Library Functions Have an Intrinsic Form

Article: Q44389
Product(s): See article
Version(s): 5.10   | 5.10
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | | mspl13_c
Last Modified: 30-MAY-1989

The /Oi compiler option generates intrinsic functions instead of
function calls only for specified run-time library functions. It does
not generate intrinsic functions for all run-time library functions or
for application program functions.

To approximate intrinsic functions with application code, use the
#define directive or the /D compiler option to define a macro.

For more information on the /Oi option and the list of functions
having intrinsic forms, refer to the "Microsoft C 5.1 Optimizing
Compiler User's Guide," Pages 93-94, and the C 5.10 README.DOC, "Part
2: Notes for the 'Microsoft C Optimizing Compiler User's Guide.'"

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