C51: Reentrant Stack Needed for Reentrant Library Functions?

Information in this article applies to:

• C51 All Versions

QUESTION

I am using library functions such as memcpy and memcmp in my application. According to the manual, these library functions are reentrant. Does this mean that I have to set up a reentrant stack in the STARTUP.A51 module?

ANSWER

No, it is not necessary to set up a reentrant stack for these library functions. These functions are reentrant because they hold all local variables in registers and do not store them in memory.

MORE INFORMATION

• Refer to Routines By Category in the Cx51 User's Guide.

SEE ALSO

• C51: Functions That Are Reentrant

Last Reviewed: Thursday, February 25, 2021