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Annotation of coherent/a/usr/man/ALL/modulus, revision 1.1

1.1     ! root        1: 
        !             2: 
        !             3: modulus                     Definition                    modulus
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        !             8: Modulus is the operation that returns the remainder of a division
        !             9: operation.   For example,  12 modulus  four equals  zero, because
        !            10: when  12 is  divided by  four it leaves  no remainder.   The term
        !            11: ``modulo'' also refers to  the product of a modulus operation; in
        !            12: the above example, the modulo  is zero.  In C, the modulus opera-
        !            13: tion is indicated with  a percent sign `%'; therefore, 12 modulus
        !            14: 4 is written 1122%44.
        !            15: 
        !            16: The modulus  operation often is used to trim  numbers to a preset
        !            17: range.  For  example, if you  wanted to create a  list of single-
        !            18: digit random numbers, you would use the command:
        !            19: 
        !            20: 
        !            21:         rand()%10
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        !            23: 
        !            24: This is demonstrated by the following example.
        !            25: 
        !            26: ***** Example *****
        !            27: 
        !            28: This  example prints  a list of  20 single-digit  random numbers.
        !            29: The random-number  table is seeded with a  portion of the current
        !            30: system time.
        !            31: 
        !            32: 
        !            33: main()
        !            34: {
        !            35:         long nowhere;   /* place to put unused data */
        !            36:         int counter;
        !            37: 
        !            38: 
        !            39: 
        !            40:         srand((int)time(&nowhere));
        !            41:         for (counter = 0; counter <20; counter++)
        !            42:                 printf("%d\n", rand()%10);
        !            43: }
        !            44: 
        !            45: 
        !            46: ***** See Also *****
        !            47: 
        !            48: definitions, operator
        !            49: 
        !            50: ***** Notes *****
        !            51: 
        !            52: The implementation  of C defines  how a modulus  operator behaves
        !            53: when  it operates  upon  numbers with  different  signs.  On  the
        !            54: i8086,
        !            55: 
        !            56: 
        !            57:         10 % -4
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        !            59: 
        !            60: yields -2.  This is not mathematical modulus, which is +2.
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        !            63: 
        !            64: COHERENT Lexicon                                           Page 1
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