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Description of problem:
The man page of log2 says:

"The log2() function returns the natural logarithm of x."

This is obviously wrong: the log2 function returns the 2-logarithm of x, not the e-logarithm.

Also, I wonder (but don't know) whether the CONFORMING TO section is correct.  log2 seems to only be available when compiling in C99 mode, so I wonder if it was already available in the other Unix versions mentioned.  (log2 is vertainly not available when compiling without -std=XXX option, even when math.h is included.)

Version-Release number of selected component (if applicable):
man-pages-1.67-7

How reproducible:
Always

Steps to Reproduce:
1. man log2
2.
3.
  

Actual Results:  "The log2() function returns the natural logarithm of x."

Expected Results:  "The log2() function returns the base-2 logarithm of x."

Additional info: