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author | Christopher Faylor <me+cygwin@cgf.cx> | 2000-02-17 19:39:46 +0000 |
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committer | Christopher Faylor <me+cygwin@cgf.cx> | 2000-02-17 19:39:46 +0000 |
commit | 43b55bace5fad27af5da7a99784667363b92c45d (patch) | |
tree | 17fe82f6ba0d93b76d10dd73d4945ab81b69db40 /newlib/libc/ctype/islower.c | |
parent | 8dabd7496a9eeaca2a7180c0a176059ba9229bb2 (diff) | |
download | gdb-SNAPSHOT.tar.gz |
import newlib-2000-02-17 snapshotnewlib-2000-02-17SNAPSHOT
Diffstat (limited to 'newlib/libc/ctype/islower.c')
-rw-r--r-- | newlib/libc/ctype/islower.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/newlib/libc/ctype/islower.c b/newlib/libc/ctype/islower.c new file mode 100644 index 00000000000..81ad0bb276e --- /dev/null +++ b/newlib/libc/ctype/islower.c @@ -0,0 +1,43 @@ + +/* +FUNCTION +<<islower>>---lower-case character predicate + +INDEX +islower + +ANSI_SYNOPSIS +#include <ctype.h> +int islower(int <[c]>); + +TRAD_SYNOPSIS +#include <ctype.h> +int islower(<[c]>); + +DESCRIPTION +<<islower>> is a macro which classifies ASCII integer values by table +lookup. It is a predicate returning non-zero for minuscules +(lower-case alphabetic characters), 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 islower>>'. + +RETURNS +<<islower>> returns non-zero if <[c]> is a lower case letter (<<a>>--<<z>>). + +PORTABILITY +<<islower>> is ANSI C. + +No supporting OS subroutines are required. +*/ +#include <_ansi.h> +#include <ctype.h> + +#undef islower +int +_DEFUN(islower,(c),int c) +{ + return((_ctype_ + 1)[c] & _L); +} + |