void
fpusave(void *addr)
{
if (use_xsave)
xsave((char *)addr, xsave_mask);
else
fxsave((char *)addr);
}
void xgamc(int index, int *nerr)
{
/*=====================================================================
* PURPOSE: To execute a MOD command given its index number.
*=====================================================================
* INPUT ARGUMENTS:
* INDEX: The index number of the command.
*=====================================================================
* OUTPUT ARGUMENTS:
* NERR: Error flag. Set to 0 if no error occurred.
* Potential error numbers: 0901.
*=====================================================================
* MODULE/LEVEL: GAM/1
*=====================================================================
* GLOBAL INPUT:
* MACH:
*=====================================================================
* GLOBAL OUTPUT:
* GAM: LRTWXL, KRTWXL, ORTWXL
*=====================================================================
* SUBROUTINES CALLED:
* SACLIB: GTOUTM, XP, XP1, XP2, XPPK, XPC, XFID, XPICKS, XPLOTPM
*=====================================================================
* MODIFICATION HISTORY:
* 970204: Added FILENUMBER to allow or disallow file number
* display. maf
* 890421: Added PLOTXY command.
* 870728: Moved XLIM and YLIM commands from GEM.
* 870420: Added SETDEVICE command.
* 861203: Added PLOTPM command.
* 830105: Deleted PUSER command.
* 821228: Added FILEID and PICKS commands. Deleted DISPLAY command.
* 821005: Added PLOTC command.
* 820825: Original version.
*===================================================================== */
/* PROCEDURE: */
*nerr = 0;
/* - Jump to correct command based upon its index number. */
switch( index ){
case 1: goto L_100;
case 2: goto L_200;
case 3: goto L_300;
case 4: goto L_400;
case 5: goto L_500;
case 6: goto L_600;
case 7: goto L_700;
case 8: goto L_800;
case 9: goto L_900;
case 10: goto L_1000;
case 11: goto L_1100;
case 12: goto L_1200;
case 13: goto L_1300;
case 14: goto L_1400;
case 15: goto L_1500;
case 16: goto L_1600; /* added for FILENUMBER. maf 970204 */
case 17: goto L_1700; /* added for PRINT. maf 990422 */
case 18: goto L_1800;
}
/* - Error return if bad index value. */
*nerr = 901;
setmsg( "ERROR", *nerr );
apcmsg( "in XGAMC",9 );
goto L_8888;
L_100:
/* - Command 01: PLOT */
xp( nerr );
goto L_8888;
L_200:
/* - Command 02: PLOT1 */
xp1( nerr );
goto L_8888;
L_300:
/* - Command 03: PLOT2 */
xp2( nerr );
goto L_8888;
L_400:
/* - Command 04: PLOTPK */
xppk( nerr );
goto L_8888;
L_500:
/* - Command 05: PLOTC */
xpc( nerr );
goto L_8888;
L_600:
/* - Command 06: FILEID */
xfid( nerr );
goto L_8888;
L_700:
/* - Command 07: PICKS */
xpicks( nerr );
goto L_8888;
L_800:
/* - Command 08: PLOTPM */
xplotpm( nerr );
goto L_8888;
L_900:
/* - Command 09: SETDEVICE */
xsetdevice( nerr );
goto L_8888;
L_1000:
/* - Command 10: XLIM */
xcrtw( &cmgam.lrtwxl, (char*)kmgam.krtwxl,9, cmgam.ortwxl, nerr );
goto L_8888;
L_1100:
/* - Command 11: YLIM */
xylim( nerr );
goto L_8888;
L_1200:
/* - Command 12: PLOTXY */
xplotxy( nerr );
goto L_8888;
L_1300:
/* - Command 13: FITXY */
xfitxy( nerr );
goto L_8888;
L_1400:
/* - Command 14: PLOTDY */
xplotdy( nerr );
goto L_8888;
L_1500:
/* - Command 15: PLOTALPHA */
xplotalpha( nerr );
goto L_8888;
L_1600:
/* - Command 16: FILENUMBER */
xfilenumber ( nerr ) ;
goto L_8888 ;
L_1700:
/* - Command 17: PRINT */
xprint ( nerr ) ;
goto L_8888 ;
L_1800:
xsave( );
goto L_8888;
L_8888:
return;
} /* end of function */
int main()
{
int i, j;
VecDoub x(7), b(7);
MatDoub a(7, 4);
a[0][0] = 0.0000000; // arbitrary: not used
a[0][1] = 0.0000000; // arbitrary: not used
a[0][2] = 0.5297000;
a[0][3] = 0.9304360;
a[1][0] = 0.0000000; // arbitrary: not used
a[1][1] = 0.0668422;
a[1][2] = 0.7226600;
a[1][3] = 0.6711490;
a[2][0] = 0.6316350;
a[2][1] = 0.8847070;
a[2][2] = 0.5194160;
a[2][3] = 0.6515190;
a[3][0] = 0.2624530;
a[3][1] = 0.7621980;
a[3][2] = 0.7533560;
a[3][3] = 0.9092080;
a[4][0] = 0.2727100;
a[4][1] = 0.8976560;
a[4][2] = 0.2749070;
a[4][3] = 0.5162920;
a[5][0] = 0.2470390;
a[5][1] = 0.4865170;
a[5][2] = 0.8461670;
a[5][3] = 0.8309650;
a[6][0] = 0.9910370;
a[6][1] = 0.6792960;
a[6][2] = 0.7664950;
a[6][3] = 0.0000000; // arbitrary: not used
x[0] = 0.4159990;
x[1] = 0.3835020;
x[2] = 0.3834160;
x[3] = 0.2377740;
x[4] = 0.0726859;
x[5] = 0.3592650;
x[6] = 0.0345721;
cout << "Banded matrix [a]:" << endl;
cout << fixed << setprecision(7);
for (i = 0; i < a.nrows(); i++) {
for (j = 0; j < a.ncols(); j++) {
cout << setw(12) << a[i][j];
}
cout << endl;
}
cout << endl;
cout << "Vector [x]:" << endl;
for (i = 0; i < x.size(); i++) {
cout << setw(18) << x[i] << endl;
}
cout << endl;
// multiply a times x, giving b
banmul(a, 2, 1, x, b);
cout << "After multiplying [a] times [x] this is [b]:" << endl;
for (i = 0; i < b.size(); i++) {
cout << setw(18) << b[i] << endl;
}
cout << endl;
//
// First, save original value of x
//
VecDoub xsave(x);
//
// The constructor does the decomposition
//
Bandec banded(a, 2, 1);
//
// Now solve for x
//
banded.solve(b, x);
cout << "After solving [a] times [x] = [b] with bandec.solve():" << endl;
cout << " Original Solved" << endl
<< " x x" << endl;
for (i = 0; i < x.size(); i++) {
cout << setw(12) << xsave[i] << setw(12) << x[i] << endl;
}
return 0;
}
