Return to rol.3l CVS log

Up to [Research Unix] / researchv10dc / 630 / man / src / p_man / man3

Annotation of researchv10dc/630/man/src/p_man/man3/rol.3l, revision 1.1.1.1

1.1       root        1: .ds ZZ DEVELOPMENT PACKAGE
                      2: .TH ROL 3L "630 MTG"
                      3: .XE "rol()"
                      4: .XE "ror()"
                      5: .SH NAME
                      6: rol, ror \- rotate bits
                      7: .SH SYNOPSIS
                      8: .B int rol (x, n)
                      9: .sp
                     10: .B int ror (x, n)
                     11: .sp
                     12: .B int x, n; 
                     13: .SH DESCRIPTION
                     14: The
                     15: .I rol
                     16: function
                     17: returns
                     18: .I x
                     19: logically bit-rotated left by
                     20: .I n.
                     21: .PP
                     22: The
                     23: .I ror
                     24: function
                     25: returns
                     26: .I x
                     27: logically bit-rotated right by
                     28: .I n.
                     29: .SH EXAMPLE
                     30: The following subroutine can be used to determine whether a Point
                     31: .I p
                     32: in a Bitmap
                     33: .I b
                     34: is on or off (returning 1 or 0, respectively).
                     35: .PP
                     36: .RS 3
                     37: .nf
                     38: .ft CM
                     39: #include <dmd.h>
                     40: 
                     41: pixel (b, p)
                     42: Bitmap *b;
                     43: Point  p;
                     44: {
                     45:        Word *w;
                     46: 
                     47:        w = addr (b, p);
                     48:        return ( (rol (*w, p.x%\s-1WORDSIZE\s+1)
                     49:                & \s-1FIRSTBIT\s+1)==\s-1FIRSTBIT\s+1);
                     50: }
                     51: \fR
                     52: .fi
                     53: .RE
                     54: .PP
                     55: This routine is implemented differently in
                     56: .IR addr (3R).
                     57: .SH SEE ALSO
                     58: addr(3R).
                     59: 

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.