guivalf.c

来自「uCGUI」· C语言 代码 · 共 66 行

/*************************************************************************************************************
                                                   uC/GUI
                                               嵌入式通用图形软件
File        : GUIValF.C
Purpose     : Displaying floating point values
************************************************************************************************************/

#include "GUI_Protected.H"
#include "math.h"

/*************************************************************************************************************
	*          Helper functions               *
*************************************************************************************************************/
static void _DispFloatFix(float f, char Len, char Decs, int DrawPlusSign) 
{
  f *= GUI_Pow10[Decs];
  f += 0.5;
  f = (float) floor (f);
  if (DrawPlusSign)
    GUI_DispSDecShift((long)f, Len, Decs);
  else
    GUI_DispDecShift((long)f, Len, Decs);
}

/*************************************************************************************************************
	*     optional sign display routines      *
*************************************************************************************************************/
void GUI_DispFloatFix(float f, char Len, char Decs) 
{
  _DispFloatFix(f, Len, Decs, 0);
}

void GUI_DispFloatMin(float f, char Fract) 
{
  char Len;
  Len = GUI_Long2Len((long)f);
  _DispFloatFix(f, (char)(Len+Fract+1), (char)Fract, 0);
}

void GUI_DispFloat(float f, char Len) 
{
  int Decs;
  Decs =  Len - GUI_Long2Len((long)f)-1;
  if (Decs<0)
    Decs =0;
  _DispFloatFix(f, Len, (char)Decs, 0);
}

/*************************************************************************************************************
	*    Signed display routines              *
*************************************************************************************************************/

void GUI_DispSFloatFix(float f, char Len, char Fract) 
{
  _DispFloatFix (f, Len, Fract, 1);
}

void GUI_DispSFloatMin(float f, char Fract)
{
  char Len;
  Len = GUI_Long2Len((long)f);
  if (f>0)
    Len++;
  _DispFloatFix(f, (char)(Len+Fract+1), (char)Fract, 1);
}