4.4BSD/usr/share/man/cat3/toascii.0

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TOASCII(3)                  BSD Programmer's Manual                 TOASCII(3)

NNAAMMEE
     ttooaasscciiii - convert a byte to 7-bit ASCII

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<ccttyyppee..hh>>

     _i_n_t
     ttooaasscciiii(_i_n_t _c);

DDEESSCCRRIIPPTTIIOONN
     The ttooaasscciiii() function strips all but the low 7 bits from a letter, in-
     cluding parity or other marker bits.

RREETTUURRNN VVAALLUUEESS
     The ttooaasscciiii() function always returns a valid ASCII character.

SSEEEE AALLSSOO
     isascii(3),  isalnum(3),  isalpha(3),  iscntrl(3),  isdigit(3),
     isgraph(3),  islower(3),  isprint(3),  ispunct(3),  isspace(3),
     isupper(3),  isxdigit(3),  tolower(3),  toupper(3),  stdio(3),  ascii(7)

4.4BSD                           June 4, 1993                                1