www.pudn.com > ucosv2(GUI).rar > GUI_AddDec.c

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              µC/GUI is protected by international copyright laws. Knowledge of the
*              source code may not be used to write a similar product. This file may
*              only be used in accordance with a license and should not be redistributed
*              in any way. We appreciate your understanding and fairness.
*
---------------------------------------------------------------------- 
File        : GUIVAL.C 
Purpose     : Routines to display values as dec, binary or hex 
---------------------------------------------------------------------- 
*/ 
 
#include "GUI_Protected.H" 
#include "GUIDebug.h" 
#include "string.h" 
 
 
/********************************************************************* 
* 
*       Public data 
* 
********************************************************************** 
*/ 
 
const U32 GUI_Pow10[10] = { 
  1 , 10, 100, 1000, 10000, 
  100000, 1000000, 10000000, 100000000, 1000000000 
}; 
 
/********************************************************************* 
* 
*       Static routines 
* 
********************************************************************** 
*/ 
 
static int _Check_NegLong(I32 *pv, char**ps) { 
  if (*pv<0) { 
    *(*ps)++ = '-'; 
    *pv = -*pv; 
    return 1; 
  } 
  return 0; 
} 
 
/********************************************************************* 
* 
*       Module internal routines 
* 
********************************************************************** 
*/ 
 
int GUI_Long2Len(I32 vSign) { 
  int Len = 1; 
  I32 v = (vSign>0) ? vSign : -vSign; 
  while (( ((U32)v) >= GUI_Pow10[Len]) && (Len <9)) 
    Len++; 
  if (vSign<0) 
		Len++; 
  return Len; 
} 
 
long GUI_AddSign(long v, char**ps) { 
  char c; 
  if (v<0) { 
    c = '-'; 
    v = -v; 
  } else { 
    c = '+'; 
  } 
  *(*ps)++ = c; 
  **ps     = '\0'; 
  return v; 
} 
 
/********************************************************************* 
* 
*       Public routines 
* 
********************************************************************** 
*/ 
 
/********************************************************************* 
* 
*       Decimal GUI_Add...  routines 
*/ 
 
 
void GUI_AddDecShift(I32 v, U8 Len, U8 Shift, char**ps) { 
  char c; 
  long d; 
  #ifndef _CM16C 
    Len -= _Check_NegLong(&v, ps); /* TASKING: Tool internal error S003: asertion failed - please report */ 
  #else 
    if (v<0) { 
      *(*ps)++ = '-'; 
      v = -v; 
    } 
  #endif 
  if (Shift) Len--; 
#if GUI_DEBUG_LEVEL >1 
  if (Len>9) { 
    Len=9; 
    GUI_DEBUG_ERROROUT("Can not display more than 9 dec. digits"); 
  } 
#endif 
  if ((U32)v >= GUI_Pow10[Len]) 
	v = GUI_Pow10[Len]-1; 
  while (Len) { 
    if (Len--==Shift) 
      *(*ps)++ = GUI_DecChar; 
    d = GUI_Pow10[Len]; 
    c = (char) (v/d); 
    v -= c*d; 
    *(*ps)++ = c+'0'; 
  } 
  **ps = 0; 
} 
 
void GUI_AddDec(I32 v, U8 Len, char**ps) { 
  GUI_AddDecShift(v, Len, 0, ps); 
} 
 
void GUI_AddDecMin(I32 v, char**ps) { 
  U8 Len = GUI_Long2Len(v); 
  GUI_AddDecShift(v, Len, 0, ps); 
}