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windows-nt/Source/XPSP1/NT/shell/osshell/accesory/calc/scistat.c

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2020-09-26 03:20:57 -05:00
/**************************************************************************/
/*** SCICALC Scientific Calculator for Windows 3.00.12 ***/
/*** By Kraig Brockschmidt, Microsoft Co-op, Contractor, 1988-1989 ***/
/*** (c)1989 Microsoft Corporation. All Rights Reserved. ***/
/*** ***/
/*** scistat.c ***/
/*** ***/
/*** Functions contained: ***/
/*** SetStat--Enable/disable the stat box, show or destroy the ***/
/*** modeless dialog box. ***/
/*** StatBoxProc--procedure for the statbox. Handles the RET, LOAD, ***/
/*** CD, and CAD buttons, and handles double-clicks. ***/
/*** StatFunctions--routines for DATA, SUM, AVE, and deviations. ***/
/*** ***/
/*** Functions called: ***/
/*** SetStat ***/
/*** ***/
/*** Last modification Thu 26-Jan-1990 ***/
/*** -by- Amit Chatterjee [amitc] 26-Jan-1990. ***/
/*** Following bug fix was made: ***/
/*** ***/
/*** Bug # 8499. ***/
/*** While fixing numbers in the stat array in memory, instead of using ***/
/*** the following for statement: ***/
/*** for (lIndex=lData; lIndex < lStatNum - 1 ; lIndex++) ***/
/*** the fix was to use: ***/
/*** for (lIndex=lData; lIndex < lStatNum ; lIndex++) ***/
/*** This is because lStatNum has already been decremented to care of ***/
/*** a number being deleted. ***/
/*** This fix will be in build 1.59. ***/
/**************************************************************************/
#include "scicalc.h"
#include "calchelp.h"
#include "unifunc.h"
#define GMEMCHUNK 96L /* Amount of memory to allocate at a time. */
extern HNUMOBJ ghnoNum;
extern HWND hStatBox, hListBox, hEdit;
extern TCHAR szBlank[6], *rgpsz[CSTRINGS];
extern LPTSTR gpszNum;
extern INT nTempCom;
extern BOOL gbRecord;
extern BOOL FireUpPopupMenu( HWND, HINSTANCE, LPARAM );
GLOBALHANDLE hgMem, hMem; /* Coupla global memory handles. */
BOOL bFocus=TRUE;
LONG lStatNum=0, /* Number of data. */
lReAllocCount; /* Number of data before ReAlloc. */
HNUMOBJ * lphnoStatNum; /* Holding place for stat data. */
/* Initiate or destroy the Statistics Box. */
VOID APIENTRY SetStat (BOOL bOnOff)
{
static int aStatOnlyKeys[] = { IDC_AVE, IDC_B_SUM, IDC_DEV, IDC_DATA };
int i;
if (bOnOff)
{
/* Create. */
lReAllocCount=GMEMCHUNK/sizeof(ghnoNum); /* Set up lReAllocCount. */
/* Start the box. */
hStatBox=CreateDialog(hInst, MAKEINTRESOURCE(IDD_SB), NULL, StatBoxProc);
/* Get a handle on some memory (16 bytes initially. */
if (!(hgMem=GlobalAlloc(GHND, 0L)))
{
StatError();
SendMessage(hStatBox, WM_COMMAND, GET_WM_COMMAND_MPS(ENDBOX, 0, 0));
return;
}
ShowWindow(hStatBox, SW_SHOWNORMAL);
}
else
{
int lIndex;
if ( hStatBox )
{
DestroyWindow(hStatBox);
// Free the numobj's
lphnoStatNum=(HNUMOBJ *)GlobalLock(hgMem);
for( lIndex = 0; lIndex < lStatNum; lIndex++ )
NumObjDestroy( &lphnoStatNum[lIndex] );
GlobalUnlock(hgMem);
lStatNum = 0;
GlobalFree(hgMem); /* Free up the memory. */
hStatBox=0; /* Nullify handle. */
}
}
// set the active state of the Ave, Sum, s, and Dat buttons
for ( i=0; i<ARRAYSIZE(aStatOnlyKeys); i++)
EnableWindow( GetDlgItem(g_hwndDlg, aStatOnlyKeys[i]), bOnOff );
return;
}
/* Windows procedure for the Dialog Statistix Box. */
INT_PTR FAR APIENTRY StatBoxProc (
HWND hStatBox,
UINT iMessage,
WPARAM wParam,
LPARAM lParam)
{
static LONG lData=-1; /* Data index in listbox. */
LONG lIndex; /* Temp index for counting. */
DWORD dwSize; /* Holding place for GlobalSize. */
static DWORD control[] = {
IDC_STATLIST, CALC_SCI_STATISTICS_VALUE,
IDC_CAD, CALC_SCI_CAD,
IDC_CD, CALC_SCI_CD,
IDC_LOAD, CALC_SCI_LOAD,
IDC_FOCUS, CALC_SCI_RET,
IDC_NTEXT, CALC_SCI_NUMBER,
IDC_NUMTEXT, CALC_SCI_NUMBER,
0, 0 };
switch (iMessage)
{
case WM_HELP:
{
LPHELPINFO phi = (LPHELPINFO)lParam;
HWND hwndChild = GetDlgItem(hStatBox,phi->iCtrlId);
WinHelp( hwndChild, rgpsz[IDS_HELPFILE], HELP_WM_HELP, (ULONG_PTR)(void *)control );
return TRUE;
}
case WM_CONTEXTMENU:
WinHelp( (HWND)wParam, rgpsz[IDS_HELPFILE], HELP_CONTEXTMENU, (ULONG_PTR)(void *)control );
return TRUE;
case WM_CLOSE:
SetStat(FALSE);
case WM_DESTROY:
lStatNum=0L; /* Reset data count. */
return(TRUE);
case WM_INITDIALOG:
/* Get a handle to this here things listbox display. */
hListBox=GetDlgItem(hStatBox, IDC_STATLIST);
return TRUE;
case WM_COMMAND:
/* Check for LOAD or double-click and recall number if so. */
if (GET_WM_COMMAND_CMD(wParam, lParam)==LBN_DBLCLK ||
GET_WM_COMMAND_ID(wParam, lParam)==IDC_LOAD)
{
/* Lock data, get pointer to it, and get index of item. */
lphnoStatNum=(HNUMOBJ *)GlobalLock(hgMem);
lData=(LONG)SendMessage(hListBox,LB_GETCURSEL,0,0L);
if (lStatNum>0 && lData !=LB_ERR)
// SPEED: REVIEW: can we use a pointer instead of Assign?
NumObjAssign( &ghnoNum, lphnoStatNum[lData]); /* Get the data. */
else
MessageBeep(0); /* Cannodo if no data nor selection. */
// Cancel kbd input mode
gbRecord = FALSE;
DisplayNum ();
nTempCom = 32;
GlobalUnlock(hgMem); /* Let the memory move! */
break;
}
// switch (wParam)
switch (GET_WM_COMMAND_ID(wParam, lParam))
{
case IDC_FOCUS:
/* Change focus back to main window. Primarily for */
/* use with the keyboard. */
SetFocus(g_hwndDlg);
return (TRUE);
case IDC_CD:
/* Clear the selected item from the listbox. */
/* Get the index and a pointer to the data. */
lData=(LONG)SendMessage(hListBox,LB_GETCURSEL,0,0L);
/* Check for possible error conditions. */
if (lData==LB_ERR || lData > lStatNum-1 || lStatNum==0)
{
MessageBeep (0);
break;
}
/* Fix listbox strings. */
lIndex=(LONG)SendMessage(hListBox, LB_DELETESTRING, (WORD)lData, 0L);
if ((--lStatNum)==0)
goto ClearItAll;
/* Place the highlight over the next one. */
if (lData<lIndex || lIndex==0)
lIndex=lData+1;
SendMessage(hListBox, LB_SETCURSEL, (WORD)lIndex-1, 0L);
lphnoStatNum=(HNUMOBJ *)GlobalLock(hgMem);
/* Fix numbers in memory. */
for (lIndex=lData; lIndex < lStatNum ; lIndex++)
{
NumObjAssign( &lphnoStatNum[lIndex], lphnoStatNum[lIndex+1] );
}
GlobalUnlock(hgMem); /* Movin' again. */
/* Update the number by the "n=". */
SetDlgItemInt(hStatBox, IDC_NUMTEXT, lStatNum, FALSE);
dwSize=(DWORD)GlobalSize(hgMem); /* Get size of memory block.*/
/* Unallocate memory if not needed after data removal.*/
/* hMem is used so we don't possibly trach hgMem. */
if ((lStatNum % lReAllocCount)==0)
if ((hMem=GlobalReAlloc(hgMem, dwSize-GMEMCHUNK, GMEM_ZEROINIT)))
hgMem=hMem;
return(TRUE);
case IDC_CAD:
ClearItAll:
/* Nuke it all! */
SendMessage(hListBox, LB_RESETCONTENT, 0L, 0L);
SetDlgItemInt(hStatBox, IDC_NUMTEXT, 0, FALSE);;
// Free the numobj's
lphnoStatNum=(HNUMOBJ *)GlobalLock(hgMem);
for( lIndex = 0; lIndex < lStatNum; lIndex++ )
NumObjDestroy( &lphnoStatNum[lIndex] );
GlobalUnlock(hgMem);
GlobalFree(hgMem); /* Drop the memory. */
lStatNum = 0;
hgMem=GlobalAlloc(GHND, 0L); /* Get a CLEAN slate. */
return(TRUE);
}
}
return (FALSE);
}
/* Routine for functions AVE, SUM, DEV, and DATA. */
VOID APIENTRY StatFunctions (WPARAM wParam)
{
LONG lIndex; /* Temp index. */
DWORD dwSize; /* Return value for GlobalSize. */
switch (wParam)
{
case IDC_DATA: /* Add current fpNum to listbox. */
if ((lStatNum % lReAllocCount)==0)
{
/* If needed, allocate another 96 bytes. */
dwSize=(DWORD)GlobalSize(hgMem);
if (StatAlloc (1, dwSize))
{
GlobalCompact((DWORD)-1L);
if (StatAlloc (1, dwSize))
{
StatError ();
return;
}
}
hgMem=hMem;
}
/* Add the display string to the listbox. */
hListBox=GetDlgItem(hStatBox, IDC_STATLIST);
lIndex=StatAlloc (2,0L);
if (lIndex==LB_ERR || lIndex==LB_ERRSPACE)
{
GlobalCompact((DWORD)-1L);
lIndex=StatAlloc (2,0L);
if (lIndex==LB_ERR || lIndex==LB_ERRSPACE)
{
StatError ();
return;
}
}
/* Highlight last entered string. */
SendMessage(hListBox, LB_SETCURSEL, (WORD)lIndex, 0L);
/* Add the number and increase the "n=" value. */
lphnoStatNum=(HNUMOBJ *)GlobalLock(hgMem);
NumObjAssign( &lphnoStatNum[lStatNum], ghnoNum );
SetDlgItemInt(hStatBox, IDC_NUMTEXT, ++lStatNum, FALSE);
break;
case IDC_AVE: /* Calculate averages and sums. */
case IDC_B_SUM: {
DECLARE_HNUMOBJ( hnoTemp );
lphnoStatNum=(HNUMOBJ *)GlobalLock(hgMem);
/* Sum the numbers or squares, depending on bInv. */
NumObjAssign( &ghnoNum, HNO_ZERO );
for (lIndex=0L; lIndex < lStatNum; lIndex++)
{
NumObjAssign( &hnoTemp, lphnoStatNum[lIndex] );
if (bInv)
{
DECLARE_HNUMOBJ( hno );
/* Get sum of squares. */
NumObjAssign( &hno, hnoTemp );
mulrat( &hno, hnoTemp );
addrat( &ghnoNum, hno );
NumObjDestroy( &hno );
}
else
{
/* Get sum. */
addrat( &ghnoNum, hnoTemp );
}
}
if (wParam==IDC_AVE) /* Divide by lStatNum=# of items for mean. */
{
DECLARE_HNUMOBJ( hno );
if (lStatNum==0)
{
DisplayError (SCERR_DIVIDEZERO);
break;
}
NumObjSetIntValue( &hno, lStatNum );
divrat( &ghnoNum, hno );
NumObjDestroy( &hno );
}
NumObjDestroy( &hnoTemp );
/* Fall out for sums. */
break;
}
case IDC_DEV: { /* Calculate deviations. */
DECLARE_HNUMOBJ(hnoTemp);
DECLARE_HNUMOBJ(hnoX);
DECLARE_HNUMOBJ( hno );
if (lStatNum <=1) /* 1 item or less, NO deviation. */
{
NumObjAssign( &ghnoNum, HNO_ZERO );
return;
}
/* Get sum and sum of squares. */
lphnoStatNum=(HNUMOBJ *)GlobalLock(hgMem);
NumObjAssign( &ghnoNum, HNO_ZERO );
NumObjAssign( &hnoTemp, HNO_ZERO );
for (lIndex=0L; lIndex < lStatNum; lIndex++)
{
NumObjAssign(&hnoX, lphnoStatNum[lIndex]);
addrat( &hnoTemp, hnoX );
NumObjAssign( &hno, hnoX );
mulrat( &hno, hnoX );
addrat( &ghnoNum, hno );
}
/* x<>- nx<6E>/n<> */
/* fpTemp=fpNum-(fpTemp*fpTemp/(double)lStatNum);*/
/* */
NumObjSetIntValue( &hno, lStatNum );
NumObjAssign( &hnoX, hnoTemp );
mulrat( &hnoX, hnoTemp );
divrat( &hnoX, hno );
NumObjAssign( &hnoTemp, ghnoNum );
subrat( &hnoTemp, hnoX );
/* All numbers are identical if fpTemp==0 */
if (NumObjIsZero( hnoTemp))
NumObjAssign( &ghnoNum, HNO_ZERO); /* No deviation. */
else {
/* If bInv=TRUE, divide by n (number of data) otherwise */
/* divide by n-1. */
/* fpNum=sqrt(fpTemp/(lStatNum-1+(LONG)bInv)); */
//
// hno still equals lStatNum
if (!bInv) {
subrat( &hno, HNO_ONE );
}
divrat( &hnoTemp, hno );
rootrat( &hnoTemp, HNO_TWO );
NumObjAssign( &ghnoNum, hnoTemp );
}
NumObjDestroy( &hno );
NumObjDestroy( &hnoX );
NumObjDestroy( &hnoTemp );
break;
}
}
GlobalUnlock(hgMem); /* Da memwry is fwee to move as Findows fishes. */
return;
}
LONG NEAR StatAlloc (WORD wType, DWORD dwSize)
{
LONG lRet=FALSE;
if (wType==1)
{
if ((hMem=GlobalReAlloc(hgMem, dwSize+GMEMCHUNK, GMEM_ZEROINIT)))
return 0L;
}
else
{
lRet=(LONG)SendMessage(hListBox, LB_ADDSTRING, 0, (LONG_PTR)(LPTSTR)gpszNum);
return lRet;
}
return 1L;
}
VOID NEAR StatError (VOID)
{
TCHAR szFoo[50]; /* This comes locally. Gets the Stat Box Caption. */
MessageBeep(0);
/* Error if out of room. */
GetWindowText(hStatBox, szFoo, 49);
MessageBox(hStatBox, rgpsz[IDS_STATMEM], szFoo, MB_OK);
return;
}
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