diff options
author | Christopher Faylor <me@cgf.cx> | 2000-02-17 22:39:52 +0300 |
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committer | Christopher Faylor <me@cgf.cx> | 2000-02-17 22:39:52 +0300 |
commit | 8a0efa53e44919bcf5ccb1d3353618a82afdf8bc (patch) | |
tree | 68c3dbf3f2c6fd5d49777def9914d77b5cd4589d /newlib/libc/ctype/toupper.c | |
parent | 1fd5e000ace55b323124c7e556a7a864b972a5c4 (diff) |
import newlib-2000-02-17 snapshot
Diffstat (limited to 'newlib/libc/ctype/toupper.c')
-rw-r--r-- | newlib/libc/ctype/toupper.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/newlib/libc/ctype/toupper.c b/newlib/libc/ctype/toupper.c new file mode 100644 index 000000000..7977beb79 --- /dev/null +++ b/newlib/libc/ctype/toupper.c @@ -0,0 +1,54 @@ +/* +FUNCTION + <<toupper>>---translate characters to upper case + +INDEX + toupper +INDEX + _toupper + +ANSI_SYNOPSIS + #include <ctype.h> + int toupper(int <[c]>); + int _toupper(int <[c]>); + +TRAD_SYNOPSIS + #include <ctype.h> + int toupper(<[c]>); + int _toupper(<[c]>); + + +DESCRIPTION +<<toupper>> is a macro which converts lower-case characters to upper +case, leaving all other characters unchanged. It is only defined when +<[c]> is an integer in the range <<EOF>> to <<255>>. + +You can use a compiled subroutine instead of the macro definition by +undefining this macro using `<<#undef toupper>>'. + +<<_toupper>> performs the same conversion as <<toupper>>, but should +only be used when <[c]> is known to be a lowercase character (<<a>>--<<z>>). + +RETURNS +<<toupper>> returns the upper-case equivalent of <[c]> when it is a +character between <<a>> and <<z>>, and <[c]> otherwise. + +<<_toupper>> returns the upper-case equivalent of <[c]> when it is a +character between <<a>> and <<z>>. If <[c]> is not one of these +characters, the behaviour of <<_toupper>> is undefined. + +PORTABILITY +<<toupper>> is ANSI C. <<_toupper>> is not recommended for portable programs. + +No supporting OS subroutines are required. +*/ + +#include <_ansi.h> +#include <ctype.h> + +#undef toupper +int +_DEFUN(toupper,(c),int c) +{ + return islower(c) ? c - 'a' + 'A' : c; +} |