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262 char DirAB, SideOp, UploA, cbtop, cbtopsave, cctop, cctopsave,
263 rbtop, rbtopsave, rctop, rctopsave;
264 Int Ai, Aj, Bi, Bj, ChooseABC, Ci, Cj, ForceTop, ctxt, info,
265 lside, mycol, myrow, nb, npcol, nprow, upper;
266 double ABCest, BCest, tmp1, tmp2, tmp3, tmp4;
268
269
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272
273
274
275
281#ifndef NO_ARGCHK
282
283
284
286 if( !( info = ( ( nprow == -1 ) ? -( 901 +
CTXT_ ) : 0 ) ) )
287 {
288 if( ( !lside ) && ( SideOp !=
CRIGHT ) )
289 {
290 PB_Cwarn( ctxt, __LINE__,
"PCSYMM",
"Illegal SIDE = %c\n", SideOp );
291 info = -1;
292 }
293 else if( ( !upper ) && ( UploA !=
CLOWER ) )
294 {
295 PB_Cwarn( ctxt, __LINE__,
"PCSYMM",
"Illegal UPLO = %c\n", UploA );
296 info = -2;
297 }
298 if( lside )
299 {
300 PB_Cchkmat( ctxt,
"PCSYMM",
"A", *M, 3, *M, 3, Ai, Aj, Ad, 9,
301 &info );
302 PB_Cchkmat( ctxt,
"PCSYMM",
"B", *M, 3, *N, 4, Bi, Bj, Bd, 13,
303 &info );
304 }
305 else
306 {
307 PB_Cchkmat( ctxt,
"PCSYMM",
"A", *N, 4, *N, 4, Ai, Aj, Ad, 9,
308 &info );
309 PB_Cchkmat( ctxt,
"PCSYMM",
"B", *M, 3, *N, 4, Bi, Bj, Bd, 13,
310 &info );
311 }
312 PB_Cchkmat( ctxt,
"PCSYMM",
"C", *M, 3, *N, 4, Ci, Cj, Cd, 18,
313 &info );
314 }
315 if( info ) {
PB_Cabort( ctxt,
"PCSYMM", info );
return; }
316#endif
317
318
319
320 if( ( *M == 0 ) || ( *N == 0 ) ||
323 return;
324
325
326
328
329
330
332 {
334 {
336 ((char *) C), Ci, Cj, Cd );
337 }
339 {
341 Ci, Cj, Cd );
342 }
343 return;
344 }
345
346
347
348#ifdef NO_ARGCHK
350#endif
351
352
353
354
355
356
357
358 if( lside )
359 {
361 ABCest = (double)(*M) *
362 ( ( ( ( Ad[
CSRC_] == -1 ) || ( npcol == 1 ) ) ?
ZERO : tmp1 /
TWO ) +
363 ( ( ( Bd[
RSRC_] == -1 ) || ( nprow == 1 ) ) ?
ZERO :
367 BCest = (double)(*N) *
369 ( nprow == 1 ?
ZERO : tmp2 ) +
MAX( tmp2, tmp3 ) +
370 ( ( ( Bd[
CSRC_] == -1 ) || ( npcol == 1 ) ) ?
ZERO : tmp1 ) +
372 }
373 else
374 {
376 ABCest = (double)(*N) *
377 ( ( ( ( Ad[
RSRC_] == -1 ) || ( nprow == 1 ) ) ?
ZERO : tmp1 /
TWO ) +
378 ( ( ( Bd[
CSRC_] == -1 ) || ( npcol == 1 ) ) ?
ZERO :
382 BCest = (double)(*M) *
383 ( ( npcol == 1 ?
ZERO : tmp1 ) +
MAX( tmp1, tmp3 ) +
385 ( ( ( Bd[
RSRC_] == -1 ) || ( nprow == 1 ) ) ?
ZERO : tmp2 ) +
387 }
388
389
390
391 ChooseABC = ( ( 1.5 * ABCest ) <= BCest );
392
393
394
395
396
398 ForceTop = ( ( *M > nb ) && ( *N > nb ) );
399
404
405 if( ChooseABC )
406 {
407 if( ForceTop )
408 {
409 rbtopsave = rbtop; rctopsave = rctop;
410 cbtopsave = cbtop; cctopsave = cctop;
411
412 if( lside )
413 {
414
415
416
417
422 ( cbtop !=
CTOP_SRING ) ) || ( cbtop != cctop ) )
423 {
426
427
428
429
432 }
433 }
434 else
435 {
436
437
438
439
444 ( rbtop !=
CTOP_SRING ) ) || ( rbtop != rctop ) )
445 {
448
449
450
451
454 }
455 }
456 }
457 if( lside )
459 else
461
463 ((char *)ALPHA), ((char *)A), Ai, Aj, Ad, ((char *)B), Bi,
464 Bj, Bd, ((char *)BETA), ((char *)C), Ci, Cj, Cd );
465 }
466 else
467 {
468 if( ForceTop )
469 {
470 rbtopsave = rbtop; rctopsave = rctop;
471 cbtopsave = cbtop; cctopsave = cctop;
472
473 if( lside )
474 {
475
476
477
478
480 ( rbtop !=
CTOP_SRING ) ) || ( rbtop != rctop ) )
481 {
484
485
486
487
490 }
493 }
494 else
495 {
496
497
498
499
501 ( cbtop !=
CTOP_SRING ) ) || ( cbtop != cctop ) )
502 {
505
506
507
508
511 }
514 }
515 }
516 if( lside )
519 else
522
524 ((char *)ALPHA), ((char *)A), Ai, Aj, Ad, ((char *)B), Bi,
525 Bj, Bd, ((char *)BETA), ((char *)C), Ci, Cj, Cd );
526 }
527
528
529
530 if( ForceTop )
531 {
536 }
537
538
539
540}