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author | Christopher Faylor <cgf@redhat.com> | 2000-02-17 19:39:46 +0000 |
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committer | Christopher Faylor <cgf@redhat.com> | 2000-02-17 19:39:46 +0000 |
commit | 6d491d8ad9122891d1a48447e8c49702eb678921 (patch) | |
tree | 45619a131b9f211ceca9fce7a866328344bf00ec /newlib/libc/ctype/isupper.c | |
parent | bd592806f45307757c24ec3f75bdefe13abfd51f (diff) | |
download | gdb-6d491d8ad9122891d1a48447e8c49702eb678921.tar.gz |
import newlib-2000-02-17 snapshotcvs/SNAPSHOT
Diffstat (limited to 'newlib/libc/ctype/isupper.c')
-rw-r--r-- | newlib/libc/ctype/isupper.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/newlib/libc/ctype/isupper.c b/newlib/libc/ctype/isupper.c new file mode 100644 index 00000000000..8127e25dabc --- /dev/null +++ b/newlib/libc/ctype/isupper.c @@ -0,0 +1,43 @@ + +/* +FUNCTION +<<isupper>>---uppercase character predicate + +INDEX +isupper + +ANSI_SYNOPSIS +#include <ctype.h> +int isupper(int <[c]>); + +TRAD_SYNOPSIS +#include <ctype.h> +int isupper(<[c]>); + +DESCRIPTION +<<isupper>> is a macro which classifies ASCII integer values by table +lookup. It is a predicate returning non-zero for upper-case letters +(<<A>>--<<Z>>), and 0 for other characters. It is defined only when +<<isascii>>(<[c]>) is true or <[c]> is EOF. + +You can use a compiled subroutine instead of the macro definition by +undefining the macro using `<<#undef isupper>>'. + +RETURNS +<<isupper>> returns non-zero if <[c]> is a upper case letter (A-Z). + +PORTABILITY +<<isupper>> is ANSI C. + +No supporting OS subroutines are required. +*/ +#include <_ansi.h> +#include <ctype.h> + +#undef isupper +int +_DEFUN(isupper,(c),int c) +{ + return((_ctype_ + 1)[c] & _U); +} + |