345 lines
12 KiB
C
345 lines
12 KiB
C
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/**************************************************************************/
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/*** SCICALC Scientific Calculator for Windows 3.00.12 ***/
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/*** By Kraig Brockschmidt, Microsoft Co-op, Contractor, 1988-1989 ***/
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/*** (c)1989 Microsoft Corporation. All Rights Reserved. ***/
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/*** ***/
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/*** scifunc.c ***/
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/*** ***/
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/*** Functions contained: ***/
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/*** SciCalcFunctions--do sin, cos, tan, com, log, ln, rec, fac, etc.***/
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/*** DisplayError--Error display driver. ***/
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/*** ***/
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/*** Functions called: ***/
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/*** SciCalcFunctions call DisplayError. ***/
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/*** ***/
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/*** Last modification. Fri 05-Jan-1990. ***/
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/*** ***/
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/*** -by- Amit Chatterjee. [amitc] 05-Jan-1990. ***/
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/*** Calc did not have a floating point exception signal handler. This ***/
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/*** would cause CALC to be forced to exit on a FP exception as that's ***/
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/*** the default. ***/
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/*** The signal handler is defined in here, in SCIMAIN.C we hook the ***/
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/*** the signal. ***/
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/*** ***/
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/*** -by- Amit Chatterjee. [amitc] 14-Dec-1989 ***/
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/*** The REC function will not depend on the bInv flag. It used to ret ***/
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/*** a random number when the bInv flag was set. ***/
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/*** ***/
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/*** -by- Amit Chatterjee. [amitc] 08-Dec-1989 ***/
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/*** Did a minor bug fix. The EnableToggles routine now sets the focus ***/
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/*** back to the main window before disabling HEX,DEC etc.. Without this***/
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/*** the window with the focus would get disable and cause MOVE to not ***/
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/*** work right. ***/
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/*** ***/
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/**************************************************************************/
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#include "scicalc.h"
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//#include "float.h"
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extern HNUMOBJ ghnoLastNum;
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extern BOOL bError;
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extern TCHAR *rgpsz[CSTRINGS];
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INT gnPendingError ;
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/* Routines for more complex mathematical functions/error checking. */
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VOID APIENTRY SciCalcFunctions (PHNUMOBJ phnoNum, DWORD wOp)
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{
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try
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{
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switch (wOp)
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{
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case IDC_CHOP:
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if (bInv)
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{
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// fractional portion
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fracrat( phnoNum );
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}
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else
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{
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// integer portion
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intrat( phnoNum );
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}
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return;
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/* Return complement. */
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case IDC_COM:
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NumObjNot( phnoNum );
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return;
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case IDC_PERCENT:
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{
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DECLARE_HNUMOBJ( hno );
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DECLARE_HNUMOBJ( hno100 );
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try
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{
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NumObjAssign( &hno, ghnoLastNum );
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NumObjSetIntValue( &hno100, 100 );
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divrat( &hno, hno100 );
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NumObjDestroy( &hno100 );
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mulrat( phnoNum, hno );
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NumObjDestroy( &hno );
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}
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catch ( DWORD nErrCode )
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{
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if ( hno != NULL )
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NumObjDestroy( &hno );
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if ( hno100 != NULL )
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NumObjDestroy( &hno100 );
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throw nErrCode;
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}
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return;
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}
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case IDC_SIN: /* Sine; normal, hyperbolic, arc, and archyperbolic */
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if (F_INTMATH())
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{
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MessageBeep(0);
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return;
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}
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if(bInv)
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{
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if (bHyp)
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{
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asinhrat( phnoNum );
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}
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else
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{
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asinanglerat( phnoNum, nDecMode );
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}
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}
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else
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{
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if (bHyp)
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{
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// hyperbolic sine
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sinhrat( phnoNum );
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}
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else
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{
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NumObjSin( phnoNum );
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}
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}
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return;
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case IDC_COS: /* Cosine, follows convention of sine function. */
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if (F_INTMATH())
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{
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MessageBeep(0);
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return;
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}
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if(bInv)
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{
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if (bHyp)
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{
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acoshrat( phnoNum );
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}
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else
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{
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acosanglerat( phnoNum, nDecMode );
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}
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}
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else
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{
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if (bHyp)
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coshrat( phnoNum );
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else
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{
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// cos()
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NumObjCos( phnoNum );
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}
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}
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return;
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case IDC_TAN: /* Same as sine and cosine. */
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if (F_INTMATH())
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{
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MessageBeep(0);
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return;
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}
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if(bInv)
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{
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if (bHyp)
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{
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atanhrat( phnoNum );
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}
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else
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{
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atananglerat( phnoNum, nDecMode );
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}
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}
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else
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{
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if (bHyp)
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tanhrat( phnoNum );
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else
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{
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// Get the answer
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NumObjTan( phnoNum );
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}
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}
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return;
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case IDC_REC: /* Reciprocal. */
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NumObjInvert( phnoNum );
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return;
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case IDC_SQR: /* Square and square root. */
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case IDC_SQRT:
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if(bInv || nCalc)
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{
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rootrat( phnoNum, HNO_TWO );
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}
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else
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{
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ratpowlong( phnoNum, 2 );
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}
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return;
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case IDC_CUB: /* Cubing and cube root functions. */
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if(bInv) {
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DECLARE_HNUMOBJ( hno );
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// REVIEW: if constants like 3 are going to be used repeatedly, it will be
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// much quicker to define them once and then keep around the definition.
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try
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{
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NumObjAssign( &hno, HNO_ONE );
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addrat( &hno, HNO_TWO );
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rootrat( phnoNum, hno );
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NumObjDestroy( &hno );
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}
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catch ( DWORD nErrCode )
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{
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if ( hno != NULL )
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NumObjDestroy( &hno );
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throw nErrCode;
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}
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}
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else {
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/* Cube it, you dig? */
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ratpowlong( phnoNum, 3 );
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}
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return;
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case IDC_LOG: /* Functions for common and natural log. */
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case IDC_LN:
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if(bInv)
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{
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/* Check maximum for exponentiation for 10<31> and e<>. */
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if (wOp==IDC_LOG) /* Do exponentiation. */
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NumObjAntiLog10( phnoNum ); // 10<31>.
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else
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exprat( phnoNum ); // e<>.
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}
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else
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{
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// ratpak checks for valid range and throws error code if needed
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if (wOp==IDC_LOG)
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log10rat( phnoNum );
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else
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lograt( phnoNum );
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// REVIEW: Is conversion of epsilon still needed?
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NumObjCvtEpsilonToZero( phnoNum );
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}
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return;
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case IDC_FAC: /* Calculate factorial. Inverse is ineffective. */
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factrat( phnoNum );
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return;
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case IDC_DMS:
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{
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if (F_INTMATH())
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{
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MessageBeep(0);
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}
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else
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{
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DECLARE_HNUMOBJ(hnoMin);
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DECLARE_HNUMOBJ(hnoSec);
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DECLARE_HNUMOBJ(hnoShft);
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try
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{
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NumObjSetIntValue( &hnoShft, bInv ? 100 : 60 );
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NumObjAssign( &hnoMin, *phnoNum );
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intrat( phnoNum );
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subrat( &hnoMin, *phnoNum );
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mulrat( &hnoMin, hnoShft );
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NumObjAssign( &hnoSec, hnoMin );
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intrat( &hnoMin );
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subrat( &hnoSec, hnoMin );
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mulrat( &hnoSec, hnoShft );
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//
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// *phnoNum == degrees, hnoMin == minutes, hnoSec == seconds
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//
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NumObjSetIntValue( &hnoShft, bInv ? 60 : 100 );
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divrat( &hnoSec, hnoShft );
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addrat( &hnoMin, hnoSec );
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divrat( &hnoMin, hnoShft );
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addrat( phnoNum, hnoMin );
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NumObjDestroy( &hnoShft );
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NumObjDestroy( &hnoMin );
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NumObjDestroy( &hnoSec );
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}
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catch ( DWORD nErrCode )
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{
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if ( hnoShft != NULL )
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NumObjDestroy( &hnoShft );
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if ( hnoMin != NULL )
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NumObjDestroy( &hnoMin );
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if ( hnoSec != NULL )
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NumObjDestroy( &hnoSec );
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throw nErrCode;
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}
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}
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return;
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}
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} // end switch( nOp )
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}
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catch( DWORD nErrCode )
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{
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DisplayError( nErrCode );
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}
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return;
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}
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/* Routine to display error messages and set bError flag. Errors are */
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/* called with DisplayError (n), where n is a INT between 0 and 5. */
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VOID APIENTRY DisplayError (INT nError)
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{
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SetDisplayText(g_hwndDlg, rgpsz[IDS_ERRORS+nError]);
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bError=TRUE; /* Set error flag. Only cleared with CLEAR or CENTR. */
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/* save the pending error */
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gnPendingError = nError ;
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return;
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}
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