Profiling results ----------------- Total cpu time observed: 18730ms (out of 18380ms) Number of samples taken: 74 (once every 253ms) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= ??? [32] 100.0% [1] 18510(98.8%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [5] 100.0% ----------------------------------------------------------------------- ??? [32] 100.0% [2] 10450(55.8%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 get-final-combination [6] 50.0% for-loop [7] 37.1% finalize-table! [9] 10.7% setup-prog [11] 2.3% ----------------------------------------------------------------------- loop [61] 5.6% simplify-alt [17] 6.4% ??? [32] 88.0% [3] 3698(19.7%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [8] 58.8% iterate-egraph!5 [13] 22.7% for-loop [10] 18.4% ----------------------------------------------------------------------- loop [61] 100.0% [4] 464(2.5%) 0(0.0%) completely-simplify-alt ...erbie/src/glue.rkt:87:0 simplify-expr [8] 100.0% ----------------------------------------------------------------------- profile-thunk14 [1] 100.0% [5] 18510(98.8%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [32] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [6] 5220(27.9%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [12] 96.0% extract-alt [18] 4.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [7] 3874(20.7%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [14] 100.0% ----------------------------------------------------------------------- completely-simplify-alt [4] 17.6% simplify [3] 82.4% [8] 2640(14.1%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [13] 90.8% loop [16] 9.2% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [9] 1120(6.0%) 0(0.0%) finalize-table! ...k/herbie/src/mainloop.rkt:264:0 post-process [15] 100.0% ----------------------------------------------------------------------- simplify [3] 100.0% [10] 682(3.6%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [13] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [11] 236(1.3%) 0(0.0%) setup-prog /home/ztatlock/herbie/src/glue.rkt:46:0 simplify-alt [17] 100.0% ----------------------------------------------------------------------- get-final-combination [6] 100.0% [12] 5012(26.8%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [19] 100.0% ----------------------------------------------------------------------- for-loop [10] 17.4% simplify [3] 21.4% simplify-expr [8] 61.2% [13] 3920(20.9%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [20] 93.9% map-enodes [25] 6.1% ----------------------------------------------------------------------- for-loop [7] 100.0% [14] 3874(20.7%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [21] 84.0% finalize-iter! [22] 16.0% ----------------------------------------------------------------------- finalize-table! [9] 100.0% [15] 1120(6.0%) 0(0.0%) post-process .../ztatlock/herbie/src/glue.rkt:95:0 loop [61] 41.4% for-loop [23] 38.9% ??? [28] 19.6% ----------------------------------------------------------------------- simplify-expr [8] 100.0% [16] 242(1.3%) 0(0.0%) loop ...tatlock/herbie/src/core/simplify.rkt:203:2 pass [24] 100.0% ----------------------------------------------------------------------- setup-prog [11] 100.0% [17] 236(1.3%) 0(0.0%) simplify-alt .../ztatlock/herbie/src/glue.rkt:84:0 simplify [3] 100.0% ----------------------------------------------------------------------- get-final-combination [6] 100.0% [18] 208(1.1%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [61] 100.0% ----------------------------------------------------------------------- split-table [12] 100.0% [19] 5012(26.8%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [65] 86.8% loop [61] 13.2% ----------------------------------------------------------------------- iterate-egraph!5 [13] 100.0% [20] 3680(19.6%) 240(1.3%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [27] 68.9% loop [29] 12.6% apply-match [34] 12.0% ----------------------------------------------------------------------- run-iter! [14] 100.0% [21] 3254(17.4%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [26] 100.0% ----------------------------------------------------------------------- run-iter! [14] 100.0% [22] 620(3.3%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [28] 100.0% ----------------------------------------------------------------------- post-process [15] 100.0% [23] 436(2.3%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:119:17 append-map [30] 100.0% ----------------------------------------------------------------------- loop [16] 100.0% [24] 242(1.3%) 0(0.0%) pass ...tatlock/herbie/src/core/simplify.rkt:193:2 for-loop [31] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [13] 100.0% [25] 240(1.3%) 0(0.0%) map-enodes ...ock/herbie/src/core/egraph.rkt:139:0 loop [61] 100.0% ----------------------------------------------------------------------- simplify! [21] 100.0% [26] 3254(17.4%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [32] 100.0% ----------------------------------------------------------------------- for-loop [27] 50.0% one-iter [20] 50.0% [27] 2536(13.5%) 442(2.4%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [27] 50.0% match-e [33] 41.3% ----------------------------------------------------------------------- post-process [15] 26.2% finalize-iter! [22] 73.8% [28] 840(4.5%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [35] 73.8% atab-add-altns [38] 26.2% ----------------------------------------------------------------------- one-iter [20] 100.0% [29] 462(2.5%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [34] 100.0% ----------------------------------------------------------------------- for-loop [23] 100.0% [30] 436(2.3%) 0(0.0%) append-map ...acket/collects/racket/list.rkt:565:2 taylor-alt [36] 100.0% ----------------------------------------------------------------------- pass [24] 100.0% [31] 242(1.3%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:196:29 for-loop [37] 100.0% ----------------------------------------------------------------------- for-loop [26] 5.8% run [5] 46.5% [32] 18730(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 46.5% run-improve58 [2] 25.6% loop [39] 22.1% simplify [3] 5.8% ----------------------------------------------------------------------- for-loop [51] 9.8% for-loop [27] 90.2% [33] 2094(11.2%) 1472(7.9%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [42] 14.4% list-cartesian-product [44] 10.6% custom-in-set [47] 9.6% for-loop [51] 5.0% ----------------------------------------------------------------------- one-iter [20] 48.9% loop [29] 51.1% [34] 904(4.8%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 mk-enode! [43] 26.8% merge-egraph-nodes! [45] 24.6% loop! [66] 24.3% for-loop [46] 24.3% ----------------------------------------------------------------------- ??? [28] 100.0% [35] 620(3.3%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [40] 100.0% ----------------------------------------------------------------------- append-map [30] 100.0% [36] 436(2.3%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [41] 100.0% ----------------------------------------------------------------------- for-loop [31] 100.0% [37] 242(1.3%) 242(1.3%) for-loop ...ck/herbie/src/core/simplify.rkt:183:13 ----------------------------------------------------------------------- ??? [28] 100.0% [38] 220(1.2%) 0(0.0%) atab-add-altns ...rbie/src/core/alt-table.rkt:50:0 atab-add-altn [40] 100.0% ----------------------------------------------------------------------- ??? [32] 100.0% [39] 8280(44.2%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [53] 57.8% loop [48] 42.2% ----------------------------------------------------------------------- atab-add-altns [38] 26.2% for-loop [35] 73.8% [40] 840(4.5%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [49] 100.0% ----------------------------------------------------------------------- taylor-alt [36] 100.0% [41] 436(2.3%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [50] 100.0% ----------------------------------------------------------------------- match-e [33] 100.0% [42] 402(2.1%) 200(1.1%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [51] 50.2% ----------------------------------------------------------------------- apply-match [34] 100.0% [43] 242(1.3%) 242(1.3%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 ----------------------------------------------------------------------- list-cartesian-product [44] 50.0% match-e [33] 50.0% [44] 222(1.2%) 222(1.2%) list-cartesian-product ...src/core/ematch.rkt:20:0 list-cartesian-product [44] 50.0% ----------------------------------------------------------------------- apply-match [34] 100.0% [45] 222(1.2%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [52] 100.0% ----------------------------------------------------------------------- apply-match [34] 100.0% [46] 220(1.2%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 loop! [66] 100.0% ----------------------------------------------------------------------- match-e [33] 100.0% [47] 200(1.1%) 200(1.1%) custom-in-set ...acket/private/set-types.rkt:578:0 ----------------------------------------------------------------------- loop [39] 100.0% [48] 3496(18.7%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [54] 54.9% make-exacts* [53] 45.1% ----------------------------------------------------------------------- atab-add-altn [40] 100.0% [49] 840(4.5%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [55] 100.0% ----------------------------------------------------------------------- for-loop [41] 100.0% [50] 436(2.3%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [56] 100.0% ----------------------------------------------------------------------- for-loop [42] 49.3% match-e [33] 50.7% [51] 410(2.2%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [33] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [45] 100.0% [52] 222(1.2%) 222(1.2%) update-leader! ...herbie/src/core/egraph.rkt:217:0 ----------------------------------------------------------------------- loop [48] 24.8% loop [39] 75.2% [53] 6362(34.0%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [57] 68.5% loop [61] 31.5% ----------------------------------------------------------------------- loop [48] 100.0% [54] 1918(10.2%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [57] 100.0% ----------------------------------------------------------------------- best-and-tied-at-points [49] 100.0% [55] 840(4.5%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [58] 49.8% ??? [59] 26.2% eval-prog [100] 24.0% ----------------------------------------------------------------------- location-do [50] 100.0% [56] 436(2.3%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 f37 [74] 50.5% loop [60] 49.5% ----------------------------------------------------------------------- f37 [74] 6.5% loop [54] 28.6% make-exacts* [53] 64.9% [57] 6712(35.8%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [61] 93.5% f37 [74] 3.2% taylor-invert [62] 3.2% ----------------------------------------------------------------------- errors [55] 100.0% [58] 418(2.2%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [64] 100.0% ----------------------------------------------------------------------- errors [55] 100.0% [59] 220(1.2%) 220(1.2%) ??? ...cket/collects/racket/private/for.rkt:1145:9 ----------------------------------------------------------------------- approximate9 [56] 100.0% [60] 216(1.2%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [63] 100.0% ----------------------------------------------------------------------- make-exacts* [53] 0.1% loop! [66] 0.2% extract-alt [18] 1.0% post-process [15] 1.1% map-enodes [25] 1.2% map [57] 2.3% infer-splitpoints4 [19] 6.6% loop [61] 87.5% [61] 10076(53.8%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [61] 87.5% option-on-expr [65] 6.6% ??? [64] 2.4% for-loop [68] 1.2% completely-simplify-alt [4] 1.1% simplify [3] 1.0% loop! [66] 0.2% ----------------------------------------------------------------------- map [57] 100.0% [62] 436(2.3%) 0(0.0%) taylor-invert .../herbie/src/core/taylor.rkt:312:0 simplify [67] 100.0% ----------------------------------------------------------------------- loop [60] 33.3% ??? [69] 66.7% [63] 216(1.2%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [69] 66.7% f37 [74] 33.3% ----------------------------------------------------------------------- for-loop [58] 4.8% loop [61] 95.2% [64] 8698(46.4%) 456(2.4%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 real->bigfloat [70] 52.3% ??? [72] 26.1% ??? [98] 14.1% ->flonum [80] 2.3% ----------------------------------------------------------------------- loop [61] 13.2% infer-splitpoints4 [19] 86.8% [65] 5012(26.8%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [71] 87.1% pick-errors [73] 8.7% err-lsts->split-indices [79] 4.2% ----------------------------------------------------------------------- loop [61] 25.0% for-loop [46] 25.0% apply-match [34] 50.0% [66] 440(2.3%) 0(0.0%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 custom-set-union [77] 50.0% loop [61] 25.0% set [76] 25.0% ----------------------------------------------------------------------- taylor-invert [62] 100.0% [67] 436(2.3%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 f37 [74] 50.5% parse-loop50 [78] 49.5% ----------------------------------------------------------------------- loop [61] 100.0% [68] 240(1.3%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:161:2 setfindf [75] 100.0% ----------------------------------------------------------------------- hash-ref! [63] 100.0% [69] 216(1.2%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:63:15 hash-ref! [63] 100.0% ----------------------------------------------------------------------- ??? [64] 100.0% [70] 4546(24.3%) 3444(18.4%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [82] 24.2% ----------------------------------------------------------------------- option-on-expr [65] 100.0% [71] 4366(23.3%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [81] 100.0% ----------------------------------------------------------------------- ??? [64] 100.0% [72] 2272(12.1%) 474(2.5%) ??? ...acket/collects/racket/private/kw.rkt:400:14 bffma [83] 33.6% ??? [94] 22.4% ...ow-val-first.rkt:357:18 [90] 11.9% bf* [89] 11.2% ----------------------------------------------------------------------- option-on-expr [65] 100.0% [73] 438(2.3%) 0(0.0%) pick-errors ...k/herbie/src/core/regimes.rkt:173:0 for-loop [84] 100.0% ----------------------------------------------------------------------- hash-ref! [63] 9.9% simplify [67] 12.6% approximate9 [56] 12.6% map [57] 22.5% f37 [74] 42.3% [74] 436(2.3%) 220(1.2%) f37 ...t/collects/racket/match/compiler.rkt:499:40 map [57] 45.0% f37 [74] 42.3% ----------------------------------------------------------------------- for-loop [68] 100.0% [75] 240(1.3%) 240(1.3%) setfindf ...e/ztatlock/herbie/src/common.rkt:173:0 ----------------------------------------------------------------------- loop! [66] 100.0% [76] 220(1.2%) 220(1.2%) set ...collects/racket/private/set-types.rkt:982:0 ----------------------------------------------------------------------- loop! [66] 100.0% [77] 220(1.2%) 0(0.0%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [85] 100.0% ----------------------------------------------------------------------- simplify [67] 100.0% [78] 216(1.2%) 216(1.2%) parse-loop50 ...s/racket/match/compiler.rkt:410:15 ----------------------------------------------------------------------- option-on-expr [65] 100.0% [79] 208(1.1%) 0(0.0%) err-lsts->split-indices .../core/regimes.rkt:224:0 add-splitpoint [86] 100.0% ----------------------------------------------------------------------- ??? [64] 100.0% [80] 198(1.1%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [87] 100.0% ----------------------------------------------------------------------- sort-context-on-expr [71] 100.0% [81] 4366(23.3%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [88] 74.6% loop [92] 25.4% ----------------------------------------------------------------------- real->bigfloat [70] 100.0% [82] 1102(5.9%) 1102(5.9%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ----------------------------------------------------------------------- ??? [72] 100.0% [83] 764(4.1%) 0(0.0%) bffma ...atlock/herbie/src/syntax/syntax.rkt:122:0 bf* [89] 67.0% ...ow-val-first.rkt:357:18 [90] 33.0% ----------------------------------------------------------------------- pick-errors [73] 100.0% [84] 438(2.3%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:176:4 eval-prog [100] 100.0% ----------------------------------------------------------------------- custom-set-union [77] 100.0% [85] 220(1.2%) 220(1.2%) for-loop ...cts/racket/private/set-types.rkt:152:2 ----------------------------------------------------------------------- err-lsts->split-indices [79] 100.0% [86] 208(1.1%) 0(0.0%) add-splitpoint ...erbie/src/core/regimes.rkt:237:2 for-loop [91] 100.0% ----------------------------------------------------------------------- ->flonum [80] 100.0% [87] 198(1.1%) 198(1.1%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ----------------------------------------------------------------------- sort [81] 46.2% copying-mergesort [88] 53.8% [88] 3258(17.4%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [88] 53.8% loop [92] 34.6% jloop [93] 11.5% ----------------------------------------------------------------------- ??? [72] 33.2% bffma [83] 66.8% [89] 766(4.1%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [94] 100.0% ----------------------------------------------------------------------- bffma [83] 48.3% ??? [72] 51.7% [90] 522(2.8%) 0(0.0%) ...ow-val-first.rkt:357:18 (unknown source) ??? [95] 100.0% ----------------------------------------------------------------------- add-splitpoint [86] 100.0% [91] 208(1.1%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:239:4 for-loop [96] 100.0% ----------------------------------------------------------------------- sort [81] 38.7% copying-mergesort [88] 61.3% [92] 2864(15.3%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [97] 100.0% ----------------------------------------------------------------------- copying-mergesort [88] 100.0% [93] 1502(8.0%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [97] 100.0% ----------------------------------------------------------------------- ??? [72] 40.0% bf* [89] 60.0% [94] 1276(6.8%) 0(0.0%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfmul [99] 82.6% ??? [101] 17.4% ----------------------------------------------------------------------- ...ow-val-first.rkt:357:18 [90]100.0% [95] 522(2.8%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [98] 100.0% ----------------------------------------------------------------------- for-loop [91] 100.0% [96] 208(1.1%) 208(1.1%) for-loop ...lock/herbie/src/core/regimes.rkt:243:8 ----------------------------------------------------------------------- jloop [93] 34.4% loop [92] 65.6% [97] 4366(23.3%) 0(0.0%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [100] 100.0% ----------------------------------------------------------------------- ??? [95] 29.9% ??? [64] 70.1% [98] 1748(9.3%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [101] 100.0% ----------------------------------------------------------------------- ??? [94] 100.0% [99] 1054(5.6%) 1054(5.6%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ----------------------------------------------------------------------- errors [55] 4.0% for-loop [84] 8.7% ??? [97] 87.2% [100] 5006(26.7%) 4786(25.6%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 ??? [103] 4.4% ----------------------------------------------------------------------- ??? [94] 11.3% ??? [98] 88.7% [101] 1970(10.5%) 774(4.1%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [102] 60.7% ----------------------------------------------------------------------- ??? [101] 100.0% [102] 1196(6.4%) 976(5.2%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [104] 18.4% ----------------------------------------------------------------------- eval-prog [100] 100.0% [103] 220(1.2%) 0(0.0%) ??? ...collects/racket/private/qq-and-or.rkt:155:9 ??? [105] 100.0% ----------------------------------------------------------------------- ??? [102] 100.0% [104] 220(1.2%) 220(1.2%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 ----------------------------------------------------------------------- ??? [103] 100.0% [105] 220(1.2%) 220(1.2%) ??? ...ollects/racket/private/qq-and-or.rkt:164:21 -----------------------------------------------------------------------