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Annotation of researchv10dc/dist/man/v3/man3/getc.3, revision 1.1

1.1     ! root        1: .pa 1
        !             2: .he 'GETC, GETW, FOPEN (III)'3/15/72'GETC, GETW, FOPEN (III)'
        !             3: .ti 0
        !             4: NAME           getw, getc, fopen  --  buffered input
        !             5: .sp
        !             6: .ti 0
        !             7: SYNOPSIS       mov     $filename,r0
        !             8: .br
        !             9: jsr    r5,fopen; iobuf
        !            10: 
        !            11: jsr    r5,getc; iobuf
        !            12: .br
        !            13: (character in r0)
        !            14: 
        !            15: jsr    r5,getw; iobuf
        !            16: .br
        !            17: (word in r0)
        !            18: .sp
        !            19: .ti 0
        !            20: DESCRIPTION    These routines are used to provide a buffered input
        !            21: facility.
        !            22: iobuf_____ is the address of a 518(10) byte buffer area whose
        !            23: contents are maintained by these routines.  Its format is:
        !            24: .sp
        !            25: .nf
        !            26: ioptr: .=.+2           / file descriptor
        !            27:        .=.+2           / characters left in buffer
        !            28:        .=.+2           / ptr to next character
        !            29:        .=.+512.        / the buffer
        !            30: .sp
        !            31: .fi
        !            32: fopen_____ may be called initially to open the file.  On return,
        !            33: the error bit (c-bit) is set if the open failed.
        !            34: If fopen_____ is never called, get___ will read from the standard
        !            35: input file.
        !            36: .sp
        !            37: getc____ returns the next byte from the file in r0.  The
        !            38: error bit is set on end of file or a read error.
        !            39: .sp
        !            40: getw____ returns the next word in r0.  getc____ and getw____
        !            41: may be used alternately; there are no odd/even
        !            42: problems.
        !            43: .sp
        !            44: iobuf_____ must be provided by the user; it must be on a word boundary.
        !            45: 
        !            46: To reuse the same buffer for another file, it is sufficient
        !            47: to close the original file and call fopen_____ again.
        !            48: .sp
        !            49: .ti 0
        !            50: FILES          kept in /lib/liba.a
        !            51: .sp
        !            52: .ti 0
        !            53: SEE ALSO       open(II), read(II), putc(III)
        !            54: .sp
        !            55: .ti 0
        !            56: DIAGNOSTICS    c-bit set on EOF or error
        !            57: .sp
        !            58: .ti 0
        !            59: BUGS           --

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