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Annotation of coherent/g/usr/lib/uucp/tay104/uuconf/grdcmp.c, revision 1.1

1.1     ! root        1: /* grdcmp.c
        !             2:    Compare two grades.
        !             3: 
        !             4:    Copyright (C) 1992 Ian Lance Taylor
        !             5: 
        !             6:    This file is part of the Taylor UUCP uuconf library.
        !             7: 
        !             8:    This library is free software; you can redistribute it and/or
        !             9:    modify it under the terms of the GNU Library General Public License
        !            10:    as published by the Free Software Foundation; either version 2 of
        !            11:    the License, or (at your option) any later version.
        !            12: 
        !            13:    This library is distributed in the hope that it will be useful, but
        !            14:    WITHOUT ANY WARRANTY; without even the implied warranty of
        !            15:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            16:    Library General Public License for more details.
        !            17: 
        !            18:    You should have received a copy of the GNU Library General Public
        !            19:    License along with this library; if not, write to the Free Software
        !            20:    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
        !            21: 
        !            22:    The author of the program may be contacted at [email protected] or
        !            23:    c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
        !            24:    */
        !            25: 
        !            26: #include "uucnfi.h"
        !            27: 
        !            28: #if USE_RCS_ID
        !            29: const char _uuconf_grdcmp_rcsid[] = "$Id: grdcmp.c,v 1.1 93/07/30 08:07:12 bin Exp Locker: bin $";
        !            30: #endif
        !            31: 
        !            32: #include <ctype.h>
        !            33: 
        !            34: /* Compare two grades, returning < 0 if b1 should be executed before
        !            35:    b2, == 0 if they are the same, or > 0 if b1 should be executed
        !            36:    after b2.  This can not fail, and does not return a standard uuconf
        !            37:    error code.
        !            38: 
        !            39:    This implementation assumes that the upper case letters are in
        !            40:    sequence, and that the lower case letters are in sequence.  */
        !            41: 
        !            42: int
        !            43: uuconf_grade_cmp (barg1, barg2)
        !            44:      int barg1;
        !            45:      int barg2;
        !            46: {
        !            47:   int b1, b2;
        !            48: 
        !            49:   /* Make sure the arguments are unsigned.  */
        !            50:   b1 = (int) BUCHAR (barg1);
        !            51:   b2 = (int) BUCHAR (barg2);
        !            52: 
        !            53:   if (isdigit (b1))
        !            54:     {
        !            55:       if (isdigit (b2))
        !            56:        return b1 - b2;
        !            57:       else
        !            58:        return -1;
        !            59:     }
        !            60:   else if (isupper (b1))
        !            61:     {
        !            62:       if (isdigit (b2))
        !            63:        return 1;
        !            64:       else if (isupper (b2))
        !            65:        return b1 - b2;
        !            66:       else
        !            67:        return -1;
        !            68:     }
        !            69:   else
        !            70:     {
        !            71:       if (! islower (b2))
        !            72:        return 1;
        !            73:       else
        !            74:        return b1 - b2;
        !            75:     }
        !            76: }

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