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'\" te .\" Copyright (c) 2002, 2021, Oracle and/or its affiliates. .TH towupper 3C "11 May 2021" "Oracle Solaris 11.4" "Standard C Library Functions" .SH NAME towupper, towupper_l \- transliterate lowercase wide-character code to uppercase .SH SYNOPSIS .LP .nf #include <wchar.h> \fBwint_t\fR \fBtowupper\fR(\fBwint_t\fR \fIwc\fR); \fBwint_t\fR \fBtowupper_l\fR(\fBwint_t\fR \fIwc\fR, \fBlocale_t locale\fR); .fi .SH DESCRIPTION .sp .LP The \fBtowupper()\fR function has as a domain a type \fBwint_t\fR, the value of which must be a character representable as a \fBwchar_t\fR, and must be a wide-character code corresponding to a valid character in the current locale or the value of \fBWEOF\fR. If the argument has any other value, the argument is returned unchanged. If the argument of \fBtowupper()\fR represents a lowercase wide-character code (as defined by character type information in the program locale category \fBLC_CTYPE\fR), the result is the corresponding uppercase wide-character code. All other arguments in the domain are returned unchanged. .sp .LP The \fBtowupper_l()\fR function is equivalent to the \fBtowupper()\fR function, except that the locale data used is from the locale represented by locale. .sp .LP The behavior is undefined if the locale argument to \fBtowupper_l()\fR is the special locale object \fBLC_GLOBAL_LOCALE\fR or is not a valid locale object handle. .SH RETURN VALUES .sp .LP Upon successful completion, \fBtowupper()\fR and \fBtowupper_l()\fR return the uppercase letter corresponding to the argument passed. Otherwise, they return the argument unchanged. .SH ERRORS .sp .LP No errors are defined. .SH ATTRIBUTES .sp .LP See \fBattributes\fR(7) for descriptions of the following attributes: .sp .TS tab( ) box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPE ATTRIBUTE VALUE _ CSI Enabled _ Interface Stability Standard _ MT-Level MT-Safe .TE .sp .SH SEE ALSO .sp .LP \fBduplocale\fR(3C), \fBfreelocale\fR(3C), \fBiswalpha\fR(3C), \fBnewlocale\fR(3C), \fBsetlocale\fR(3C), \fBtowlower\fR(3C), \fBuselocale\fR(3C), \fBattributes\fR(7), \fBstandards\fR(7)