summary refs log tree commit diff
path: root/sysdeps/ia64/fpu/s_tanf.S
blob: b4493c15542f60ba2948d4fc078de0f2d309e55a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
.file "tanf.s"

// Copyright (c) 2000, 2001, Intel Corporation
// All rights reserved.
// 
// Contributed 2/2/2000 by John Harrison, Ted Kubaska, Bob Norin, Shane Story,
// and Ping Tak Peter Tang of the Computational Software Lab, Intel Corporation.
// 
// WARRANTY DISCLAIMER
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS 
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
// 
// Intel Corporation is the author of this code, and requests that all
// problem reports or change requests be submitted to it directly at 
// http://developer.intel.com/opensource.
//
// History
//==============================================================
// 2/02/00: Initial version
// 4/04/00  Unwind support added
// 12/27/00 Improved speed
//
// API
//==============================================================
// float tan( float x);
//
// Overview of operation
//==============================================================
// If the input value in radians is |x| >= 1.xxxxx 2^10 call the
// older slower version.
//
// The new algorithm is used when |x| <= 1.xxxxx 2^9.
//
// Represent the input X as Nfloat * pi/2 + r
//    where r can be negative and |r| <= pi/4
//
//     tan_W  = x * 2/pi
//     Nfloat = round_int(tan_W)
//
//     tan_r  = x - Nfloat * (pi/2)_hi
//     tan_r  = tan_r - Nfloat * (pi/2)_lo
//
// We have two paths: p8, when Nfloat is even and p9. when Nfloat is odd.
// p8: tan(X) =  tan(r)
// p9: tan(X) = -cot(r)
//
// Each is evaluated as a series. The p9 path requires 1/r.
//
// The coefficients used in the series are stored in a table as
// are the pi constants.
//
// Registers used
//==============================================================
//
// predicate registers used:  
// p6-10
//
// floating-point registers used:  
// f10-15, f32-105
// f8, input
//
// general registers used
// r14-18, r32-43
//

#include "libm_support.h"

// Assembly macros
//==============================================================
TAN_INV_PI_BY_2_2TO64        = f10
TAN_RSHF_2TO64               = f11
TAN_2TOM64                   = f12
TAN_RSHF                     = f13
TAN_W_2TO64_RSH              = f14
TAN_NFLOAT                   = f15

tan_Inv_Pi_by_2              = f32
tan_Pi_by_2_hi               = f33
tan_Pi_by_2_lo               = f34


tan_P0                       = f35
tan_P1                       = f36
tan_P2                       = f37
tan_P3                       = f38 
tan_P4                       = f39 
tan_P5                       = f40 
tan_P6                       = f41
tan_P7                       = f42
tan_P8                       = f43 
tan_P9                       = f44 
tan_P10                      = f45 
tan_P11                      = f46
tan_P12                      = f47 
tan_P13                      = f48
tan_P14                      = f49
tan_P15                      = f50

tan_Q0                       = f51 
tan_Q1                       = f52 
tan_Q2                       = f53 
tan_Q3                       = f54 
tan_Q4                       = f55 
tan_Q5                       = f56 
tan_Q6                       = f57 
tan_Q7                       = f58 
tan_Q8                       = f59
tan_Q9                       = f60
tan_Q10                      = f61

tan_r                        = f62
tan_rsq                      = f63
tan_rcube                    = f64

tan_v18                      = f65
tan_v16                      = f66
tan_v17                      = f67
tan_v12                      = f68
tan_v13                      = f69
tan_v7                       = f70
tan_v8                       = f71
tan_v4                       = f72
tan_v5                       = f73
tan_v15                      = f74
tan_v11                      = f75
tan_v14                      = f76
tan_v3                       = f77
tan_v6                       = f78
tan_v10                      = f79
tan_v2                       = f80
tan_v9                       = f81
tan_v1                       = f82
tan_int_Nfloat               = f83 
tan_Nfloat                   = f84 

tan_NORM_f8                  = f85 
tan_W                        = f86

tan_y0                       = f87
tan_d                        = f88 
tan_y1                       = f89 
tan_dsq                      = f90 
tan_y2                       = f91 
tan_d4                       = f92 
tan_inv_r                    = f93 

tan_z1                       = f94
tan_z2                       = f95
tan_z3                       = f96
tan_z4                       = f97
tan_z5                       = f98
tan_z6                       = f99
tan_z7                       = f100
tan_z8                       = f101
tan_z9                       = f102
tan_z10                      = f103
tan_z11                      = f104
tan_z12                      = f105


/////////////////////////////////////////////////////////////

tan_GR_sig_inv_pi_by_2       = r14
tan_GR_rshf_2to64            = r15
tan_GR_exp_2tom64            = r16
tan_GR_n                     = r17
tan_GR_rshf                  = r18

tan_AD                       = r33
tan_GR_10009                 = r34 
tan_GR_17_ones               = r35 
tan_GR_N_odd_even            = r36 
tan_GR_N                     = r37 
tan_signexp                  = r38
tan_exp                      = r39
tan_ADQ                      = r40

GR_SAVE_PFS                  = r41 
GR_SAVE_B0                   = r42       
GR_SAVE_GP                   = r43      


#ifdef _LIBC
.rodata
#else
.data
#endif

.align 16

double_tan_constants:
ASM_TYPE_DIRECTIVE(double_tan_constants,@object)
//   data8 0xA2F9836E4E44152A, 0x00003FFE // 2/pi
   data8 0xC90FDAA22168C234, 0x00003FFF // pi/2 hi

   data8 0xBEEA54580DDEA0E1 // P14 
   data8 0x3ED3021ACE749A59 // P15
   data8 0xBEF312BD91DC8DA1 // P12 
   data8 0x3EFAE9AFC14C5119 // P13
   data8 0x3F2F342BF411E769 // P8
   data8 0x3F1A60FC9F3B0227 // P9
   data8 0x3EFF246E78E5E45B // P10
   data8 0x3F01D9D2E782875C // P11
   data8 0x3F8226E34C4499B6 // P4
   data8 0x3F6D6D3F12C236AC // P5
   data8 0x3F57DA1146DCFD8B // P6
   data8 0x3F43576410FE3D75 // P7
   data8 0x3FD5555555555555 // P0
   data8 0x3FC11111111111C2 // P1
   data8 0x3FABA1BA1BA0E850 // P2
   data8 0x3F9664F4886725A7 // P3
ASM_SIZE_DIRECTIVE(double_tan_constants)

double_Q_tan_constants:
ASM_TYPE_DIRECTIVE(double_Q_tan_constants,@object)
   data8 0xC4C6628B80DC1CD1, 0x00003FBF // pi/2 lo
   data8 0x3E223A73BA576E48 // Q8
   data8 0x3DF54AD8D1F2CA43 // Q9
   data8 0x3EF66A8EE529A6AA // Q4
   data8 0x3EC2281050410EE6 // Q5
   data8 0x3E8D6BB992CC3CF5 // Q6
   data8 0x3E57F88DE34832E4 // Q7
   data8 0x3FD5555555555555 // Q0
   data8 0x3F96C16C16C16DB8 // Q1
   data8 0x3F61566ABBFFB489 // Q2
   data8 0x3F2BBD77945C1733 // Q3
   data8 0x3D927FB33E2B0E04 // Q10
ASM_SIZE_DIRECTIVE(double_Q_tan_constants)


   
.align 32
.global tanf#
#ifdef _LIBC
.global __tanf#
#endif

////////////////////////////////////////////////////////



.section .text
.proc  tanf#
#ifdef _LIBC
.proc  __tanf#
#endif
.align 32
tanf:
#ifdef _LIBC
__tanf:
#endif
// The initial fnorm will take any unmasked faults and
// normalize any single/double unorms

{ .mlx
      alloc          r32=ar.pfs,1,11,0,0               
      movl tan_GR_sig_inv_pi_by_2 = 0xA2F9836E4E44152A // significand of 2/pi
}
{ .mlx
      addl           tan_AD   = @ltoff(double_tan_constants), gp
      movl tan_GR_rshf_2to64 = 0x47e8000000000000 // 1.1000 2^(63+63+1)
}
;;

{ .mfi
      ld8 tan_AD = [tan_AD]
      fnorm     tan_NORM_f8  = f8                      
      mov tan_GR_exp_2tom64 = 0xffff-64 // exponent of scaling factor 2^-64
}
{ .mlx
      nop.m 999
      movl tan_GR_rshf = 0x43e8000000000000 // 1.1000 2^63 for right shift
}
;;


// Form two constants we need
//   2/pi * 2^1 * 2^63, scaled by 2^64 since we just loaded the significand
//   1.1000...000 * 2^(63+63+1) to right shift int(W) into the significand
{ .mmi
      setf.sig TAN_INV_PI_BY_2_2TO64 = tan_GR_sig_inv_pi_by_2
      setf.d TAN_RSHF_2TO64 = tan_GR_rshf_2to64
      mov       tan_GR_17_ones     = 0x1ffff             ;;
}


// Form another constant
//   2^-64 for scaling Nfloat
//   1.1000...000 * 2^63, the right shift constant
{ .mmf
      setf.exp TAN_2TOM64 = tan_GR_exp_2tom64
      adds tan_ADQ = double_Q_tan_constants - double_tan_constants, tan_AD
      fclass.m.unc  p6,p0 = f8, 0x07  // Test for x=0
}
;;


// Form another constant
//   2^-64 for scaling Nfloat
//   1.1000...000 * 2^63, the right shift constant
{ .mmf
      setf.d TAN_RSHF = tan_GR_rshf
      ldfe      tan_Pi_by_2_hi = [tan_AD],16 
      fclass.m.unc  p7,p0 = f8, 0x23  // Test for x=inf
}
;;

{ .mfb
      ldfe      tan_Pi_by_2_lo = [tan_ADQ],16           
      fclass.m.unc  p8,p0 = f8, 0xc3  // Test for x=nan
(p6)  br.ret.spnt    b0    ;;         // Exit for x=0
}

{ .mfi
      ldfpd     tan_P14,tan_P15 = [tan_AD],16                         
(p7)  frcpa.s0  f8,p9=f0,f0           // Set qnan indef if x=inf
      mov       tan_GR_10009 = 0x10009
}
{ .mib
      ldfpd      tan_Q8,tan_Q9  = [tan_ADQ],16                        
      nop.i 999
(p7)  br.ret.spnt    b0    ;;         // Exit for x=inf
}

{ .mfi
      ldfpd      tan_P12,tan_P13 = [tan_AD],16                         
(p8)  fma.s f8=f8,f1,f8               // Set qnan if x=nan
      nop.i 999
}
{ .mib
      ldfpd      tan_Q4,tan_Q5  = [tan_ADQ],16                        
      nop.i 999
(p8)  br.ret.spnt    b0    ;;         // Exit for x=nan
}

{ .mmi
      getf.exp  tan_signexp    = tan_NORM_f8                 
      ldfpd      tan_P8,tan_P9  = [tan_AD],16                         
      nop.i 999 ;;
}

// Multiply x by scaled 2/pi and add large const to shift integer part of W to 
//   rightmost bits of significand
{ .mfi
      ldfpd      tan_Q6,tan_Q7  = [tan_ADQ],16
      fma.s1 TAN_W_2TO64_RSH = tan_NORM_f8,TAN_INV_PI_BY_2_2TO64,TAN_RSHF_2TO64
      nop.i 999 ;;
}

{ .mmi
      ldfpd      tan_P10,tan_P11 = [tan_AD],16                         
      nop.m 999
      and       tan_exp = tan_GR_17_ones, tan_signexp         ;;
}


// p7 is true if we must call DBX TAN
// p7 is true if f8 exp is > 0x10009 (which includes all ones
//    NAN or inf)
{ .mmi
      ldfpd      tan_Q0,tan_Q1  = [tan_ADQ],16                         
      cmp.ge.unc  p7,p0 = tan_exp,tan_GR_10009               
      nop.i 999 ;;
}


{ .mmb
      ldfpd      tan_P4,tan_P5  = [tan_AD],16                         
      nop.m 999
(p7)  br.cond.spnt   L(TAN_DBX) ;;                                  
}


{ .mmi
      ldfpd      tan_Q2,tan_Q3  = [tan_ADQ],16                         
      nop.m 999
      nop.i 999 ;;
}



// TAN_NFLOAT = Round_Int_Nearest(tan_W)
{ .mfi
      ldfpd      tan_P6,tan_P7  = [tan_AD],16                         
      fms.s1 TAN_NFLOAT = TAN_W_2TO64_RSH,TAN_2TOM64,TAN_RSHF      
      nop.i 999 ;;
}


{ .mfi
      ldfd      tan_Q10 = [tan_ADQ]
      nop.f 999
      nop.i 999 ;;
}


{ .mfi
      ldfpd      tan_P0,tan_P1  = [tan_AD],16                         
      nop.f 999
      nop.i 999 ;;
}


{ .mfi
      getf.sig    tan_GR_n = TAN_W_2TO64_RSH
      nop.f 999
      nop.i 999 ;;
}

// tan_r          = -tan_Nfloat * tan_Pi_by_2_hi + x
{ .mfi
      ldfpd      tan_P2,tan_P3  = [tan_AD]
      fnma.s1  tan_r      = TAN_NFLOAT, tan_Pi_by_2_hi,  tan_NORM_f8         
      nop.i 999 ;;
}


// p8 ==> even
// p9 ==> odd
{ .mmi
      and         tan_GR_N_odd_even = 0x1, tan_GR_n ;;          
      nop.m 999
      cmp.eq.unc  p8,p9          = tan_GR_N_odd_even, r0      ;;
}


// tan_r          = tan_r -tan_Nfloat * tan_Pi_by_2_lo 
{ .mfi
      nop.m 999
      fnma.s1  tan_r      = TAN_NFLOAT, tan_Pi_by_2_lo,  tan_r      
      nop.i 999 ;;
}


{ .mfi
      nop.m 999
      fma.s1   tan_rsq    = tan_r, tan_r,   f0                      
      nop.i 999 ;;
}


{ .mfi
      nop.m 999
(p9)  frcpa.s1   tan_y0, p10 = f1,tan_r                  
      nop.i 999  ;;
}


{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v18 = tan_rsq, tan_P15, tan_P14        
      nop.i 999
}
{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v4  = tan_rsq, tan_P1, tan_P0          
      nop.i 999  ;;
}



{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v16 = tan_rsq, tan_P13, tan_P12        
      nop.i 999 
}
{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v17 = tan_rsq, tan_rsq, f0             
      nop.i 999 ;;
}



{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v12 = tan_rsq, tan_P9, tan_P8          
      nop.i 999 
}
{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v13 = tan_rsq, tan_P11, tan_P10        
      nop.i 999 ;;
}



{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v7  = tan_rsq, tan_P5, tan_P4          
      nop.i 999 
}
{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v8  = tan_rsq, tan_P7, tan_P6          
      nop.i 999 ;;
}



{ .mfi
      nop.m 999
(p9)  fnma.s1    tan_d   = tan_r, tan_y0, f1   
      nop.i 999 
}
{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v5  = tan_rsq, tan_P3, tan_P2          
      nop.i 999 ;;
}



{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z11 = tan_rsq, tan_Q9, tan_Q8         
      nop.i 999
}
{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z12 = tan_rsq, tan_rsq, f0            
      nop.i 999 ;;
}


{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v15 = tan_v17, tan_v18, tan_v16        
      nop.i 999 
}
{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z7 = tan_rsq, tan_Q5, tan_Q4          
      nop.i 999 ;;
}


{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v11 = tan_v17, tan_v13, tan_v12        
      nop.i 999
}
{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z8 = tan_rsq, tan_Q7, tan_Q6          
      nop.i 999 ;;
}



{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v14 = tan_v17, tan_v17, f0             
      nop.i 999 
}
{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z3 = tan_rsq, tan_Q1, tan_Q0          
      nop.i 999 ;; 
}




{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v3 = tan_v17, tan_v5, tan_v4           
      nop.i 999
}
{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v6 = tan_v17, tan_v8, tan_v7           
      nop.i 999 ;;
}



{ .mfi
      nop.m 999
(p9)  fma.s1     tan_y1  = tan_y0, tan_d, tan_y0    
      nop.i 999 
}
{ .mfi
      nop.m 999
(p9)  fma.s1     tan_dsq = tan_d, tan_d, f0        
      nop.i 999 ;; 
}


{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z10 = tan_z12, tan_Q10, tan_z11       
      nop.i 999 
}
{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z9  = tan_z12, tan_z12,f0             
      nop.i 999 ;;
}


{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z4 = tan_rsq, tan_Q3, tan_Q2          
      nop.i 999 
}
{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z6  = tan_z12, tan_z8, tan_z7         
      nop.i 999 ;; 
}



{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v10 = tan_v14, tan_v15, tan_v11        
      nop.i 999 ;; 
}



{ .mfi
      nop.m 999
(p9)  fma.s1     tan_y2  = tan_y1, tan_d, tan_y0         
      nop.i 999 
}
{ .mfi
      nop.m 999
(p9)  fma.s1     tan_d4  = tan_dsq, tan_dsq, tan_d       
      nop.i 999  ;;
}


{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v2 = tan_v14, tan_v6, tan_v3           
      nop.i 999
}
{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v9 = tan_v14, tan_v14, f0              
      nop.i 999 ;;
}


{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z2  = tan_z12, tan_z4, tan_z3         
      nop.i 999 
}
{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z5  = tan_z9, tan_z10, tan_z6         
      nop.i 999  ;;
}


{ .mfi
      nop.m 999
(p9)  fma.s1     tan_inv_r = tan_d4, tan_y2, tan_y0      
      nop.i 999 
}
{ .mfi
      nop.m 999
(p8)  fma.s1   tan_rcube  = tan_rsq, tan_r,   f0
      nop.i 999  ;;
}



{ .mfi
      nop.m 999
(p8)  fma.s1  tan_v1 = tan_v9, tan_v10, tan_v2           
      nop.i 999 
}
{ .mfi
      nop.m 999
(p9)  fma.s1  tan_z1  = tan_z9, tan_z5, tan_z2          
      nop.i 999   ;;
}



{ .mfi
      nop.m 999
(p8)  fma.s.s0  f8  = tan_v1, tan_rcube, tan_r             
      nop.i 999  
}
{ .mfb
      nop.m 999
(p9)  fms.s.s0  f8  = tan_r, tan_z1, tan_inv_r        
      br.ret.sptk    b0 ;;    
}
.endp tanf#
ASM_SIZE_DIRECTIVE(tanf#)


.proc __libm_callout
__libm_callout:
L(TAN_DBX): 
.prologue

{ .mfi
        nop.m 0
     fmerge.s f9 = f0,f0 
.save   ar.pfs,GR_SAVE_PFS
        mov  GR_SAVE_PFS=ar.pfs
}
;;

{ .mfi
        mov GR_SAVE_GP=gp
        nop.f 0
.save   b0, GR_SAVE_B0
        mov GR_SAVE_B0=b0
}

.body
{ .mfb
      nop.m 999
      nop.f 999
       br.call.sptk.many  b0=__libm_tan# ;;
}


{ .mfi
       mov gp        = GR_SAVE_GP
      fnorm.s     f8 = f8
       mov b0        = GR_SAVE_B0 
}
;;


{ .mib
         nop.m 999
      mov ar.pfs    = GR_SAVE_PFS
      br.ret.sptk     b0
;;
}


.endp  __libm_callout
ASM_SIZE_DIRECTIVE(__libm_callout)

.type __libm_tan#,@function
.global __libm_tan#