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Annotation of cci/usr/src/usr.lib/libF77/rand_.c, revision 1.1

1.1     ! root        1: /*
        !             2: char id_rand[] = "@(#)rand_.c  1.1";
        !             3:  *
        !             4:  * Routines to return random values
        !             5:  *
        !             6:  * calling sequence:
        !             7:  *     double precision d, drand
        !             8:  *     i = irand(iflag)
        !             9:  *     x = rand(iflag)
        !            10:  *     d = drand(iflag)
        !            11:  * where:
        !            12:  *     If arg is 1, generator is restarted. If arg is 0, next value
        !            13:  *     is returned. Any other arg is a new seed for the generator.
        !            14:  *     Integer values will range from 0 thru 2147483647.
        !            15:  *     Real values will range from 0.0 thru 1.0
        !            16:  *     (see rand(3))
        !            17:  */
        !            18: 
        !            19: #define        RANDMAX         2147483647
        !            20: 
        !            21: long irand_(iarg)
        !            22: long *iarg;
        !            23: {
        !            24:        if (*iarg) srand((int)*iarg);
        !            25:        return( rand() );
        !            26: }
        !            27: 
        !            28: float rand_(iarg)
        !            29: long *iarg;
        !            30: {
        !            31:        if (*iarg) srand((int)*iarg);
        !            32:        return( (float)(rand())/(float)RANDMAX );
        !            33: }
        !            34: 
        !            35: double drand_(iarg)
        !            36: long *iarg;
        !            37: {
        !            38:        if (*iarg) srand((int)*iarg);
        !            39:        return( (double)(rand())/(double)RANDMAX );
        !            40: }

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