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  1 /******************************************************************************
  2 *
  3 * Copyright (C) 2006, The Gentee Group. All rights reserved. 
  4 * This file is part of the Gentee open source project - http://www.gentee.com. 
  5 * 
  6 * THIS FILE IS PROVIDED UNDER THE TERMS OF THE GENTEE LICENSE ("AGREEMENT"). 
  7 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS FILE CONSTITUTES RECIPIENTS 
  8 * ACCEPTANCE OF THE AGREEMENT.
  9 *
 10 * ID: number 18.10.06 0.0.A.
 11 *
 12 * Author: Alexey Krivonogov
 13 *
 14 * Summary: This file provides functionality for numbers.
 15 *
 16 ******************************************************************************/
 17 
 18 #include "number.h"
 19 #include "../bytecode/cmdlist.h"
 20 #include "../os/user/defines.h"
 21 
 22 /*-----------------------------------------------------------------------------
 23 *
 24 * ID: num_gethex 19.10.06 0.0.A.
 25 * 
 26 * Summary: Convert hex input string to value
 27 *  
 28 -----------------------------------------------------------------------------*/
 29 
 30 pubyte STDCALL num_gethex( pubyte in, pnumber pnum, uint mode )
 31 {
 32    pubyte  cur = in;
 33    int     len = mode << 1;
 34 
 35    pnum->vlong = 0L;
 36    pnum->type = mode == 8 ? TUlong : TUint;
 37 
 38    while ( _hex[ *cur ] != 0xFF && ( cur - in ) < len )
 39    {
 40       pnum->vlong = ( pnum->vlong << 4 ) + _hex[ *cur ];
 41       cur++;
 42    }
 43    return cur;
 44 }
 45 
 46 /*-----------------------------------------------------------------------------
 47 *
 48 * ID: num_getval 19.10.06 0.0.A.
 49 * 
 50 * Summary: Convert input string to value
 51 *  
 52 -----------------------------------------------------------------------------*/
 53 
 54 pubyte STDCALL num_getval( pubyte in, pnumber pnum )
 55 {
 56    uint    sign = 0;
 57    uint    base = 10;
 58    pubyte  val = _dec;
 59    ubyte   stop;
 60    pubyte  eval;
 61    pubyte  cur = in;
 62 
 63    while ( *cur == '+' || *cur == '-' || *cur == ' ' )
 64    {
 65       if ( *cur == '-' )
 66          sign = !sign;
 67       cur++;
 68    }
 69    if ( _lower[ *( cur + 1 ) ] == 'x' )
 70    {
 71       cur += 2;
 72       base = 16;
 73       val = _hex;
 74    }
 75    else
 76       if ( _lower[ *( cur + 1 ) ] == 'b' )
 77       {
 78          cur += 2;
 79          base = 2;
 80          val = _bin;
 81       }
 82    pnum->vlong = 0L;
 83    pnum->type = sign ? TInt : TUint;
 84    while ( val[ *cur ] != 0xFF )
 85    {
 86       pnum->vlong = pnum->vlong * base + val[ *cur ];
 87       cur++;
 88    }
 89 //   printf("val=%i %c %i\n", pnum->vint, *cur,  val[ *cur ] );
 90    stop = _lower[ *cur ];
 91    if ( stop == 'l' )
 92    {
 93       cur++;
 94       if ( sign )
 95       {
 96          pnum->type = TLong;
 97          pnum->vlong = -(long64)pnum->vlong;
 98       }
 99       else
100          pnum->type = TUlong;
101    }
102    else
103       if ( stop == '.' || stop == 'e' || stop == 'd' || stop == 'f' )
104       {
105          pnum->type = TDouble;
106          pnum->vdouble = strtod( in, &eval );
107          stop = _lower[ *eval ];
108          if ( stop == 'f' )
109          {
110             pnum->type = TFloat;
111             pnum->vfloat = (float)pnum->vdouble;
112          }
113          if ( stop == 'd' || stop == 'f' )
114             eval++;
115          return eval;
116       }
117       else
118       {
119          if ( sign )
120             pnum->vint = -(int)pnum->vint;
121       }
122 
123    return cur;
124 }
125 
126 //--------------------------------------------------------------------------
127