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Annotation of 43BSDReno/lib/libF77/random_.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)random_.c   5.4     5/13/90
        !             7:  * 
        !             8:  * Routines to return random values
        !             9:  *
        !            10:  * calling sequence:
        !            11:  *     double precision d, drandm
        !            12:  *     i = irandm(iflag)
        !            13:  *     x = random(iflag)
        !            14:  *     d = drandm(iflag)
        !            15:  * where:
        !            16:  *     If arg is nonzero, generator is restarted and value is returned.
        !            17:  *     If arg is 0, next value is returned.
        !            18:  *     Integer values will range from 0 thru 2147483647 (see random(3)).
        !            19:  *     Real values will range from 0.0 thru 1.0 .
        !            20:  */
        !            21: 
        !            22: #if    defined(vax) || defined(tahoe) || defined(hp300)
        !            23: #define        RANDMAX         2147483647
        !            24: #else  vax || tahoe
        !            25:        UNKNOWN MACHINE!
        !            26: #endif vax || tahoe
        !            27: 
        !            28: long irandm_(iarg)
        !            29: long *iarg;
        !            30: {
        !            31:        if (*iarg) srandom((int)*iarg);
        !            32:        return( random() );
        !            33: }
        !            34: 
        !            35: float random_(iarg)
        !            36: long *iarg;
        !            37: {
        !            38:        if (*iarg) srandom((int)*iarg);
        !            39:        return( (float)(random())/(float)RANDMAX );
        !            40: }
        !            41: 
        !            42: double drandm_(iarg)
        !            43: long *iarg;
        !            44: {
        !            45:        if (*iarg) srandom((int)*iarg);
        !            46:        return( (double)(random())/(double)RANDMAX );
        !            47: }

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