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home | helpISASCII(3) BSD Library Functions Manual ISASCII(3) NAME isascii -- test for ASCII character LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <ctype.h> int isascii(int c); DESCRIPTION The isascii() function tests for an ASCII character, which is any character with a value in the range from 0 to 127, inclusive. The isascii() is defined on all integer values. SEE ALSO ctype(3), isalnum(3), isalpha(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), islower(3), isprint(3), ispunct(3), isspace(3), isupper(3), isxdigit(3), stdio(3), toascii(3), tolower(3), toupper(3), ascii(7) STANDARDS The isascii() function conforms to X/Open Portability Guide Issue 4 ("XPG4") and IEEE Std 1003.1-2001 ("POSIX.1"). The IEEE Std 1003.1-2008 ("POSIX.1") revision however marked it as obsolete, noting that isascii() cannot be used portably in a localized application. BSD April 30, 2010 BSD
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