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(sunos section 3c)
man page for _tolower

_tolower(3C)						   Standard C Library Functions 					      _tolower(3C)

_tolower - transliterate upper-case characters to lower-case SYNOPSIS
#include <ctype.h> int _tolower(int c); DESCRIPTION
The _tolower() macro is equivalent to tolower(3C) except that the argument c must be an upper-case letter. RETURN VALUES
On successful completion, _tolower() returns the lower-case letter corresponding to the argument passed. ERRORS
No errors are defined. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
isupper(3C), tolower(3C), attributes(5), standards(5) SunOS 5.10 24 Jul 2002 _tolower(3C)

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