Profiling results ----------------- Total cpu time observed: 22026ms (out of 22488ms) Number of samples taken: 93 (once every 237ms) (Hiding functions with self<1.0% and local<2.0%: 1 of 102 hidden) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= ??? [35] 100.0% [1] 21378(97.1%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [10] 100.0% ----------------------------------------------------------------------- ??? [35] 100.0% [2] 5454(24.8%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 finalize-table! [11] 41.0% get-final-combination [12] 32.7% for-loop [14] 18.9% loop [40] 7.4% ----------------------------------------------------------------------- copying-mergesort [50] 100.0% [3] 894(4.1%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [13] 100.0% ----------------------------------------------------------------------- hash-ref! [69] 100.0% [4] 806(3.7%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:483:23 for-loop [15] 100.0% ----------------------------------------------------------------------- hash-ref! [69] 100.0% [5] 804(3.7%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [16] 100.0% ----------------------------------------------------------------------- hash-ref! [69] 100.0% [6] 402(1.8%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [18] 100.0% ----------------------------------------------------------------------- hash-ref! [69] 100.0% [7] 402(1.8%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:392:23 for-loop [17] 100.0% ----------------------------------------------------------------------- hash-ref! [69] 100.0% [8] 212(1.0%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 loop [65] 100.0% ----------------------------------------------------------------------- hash-ref! [69] 100.0% [9] 202(0.9%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:322:33 for-loop [19] 100.0% ----------------------------------------------------------------------- profile-thunk14 [1] 99.1% [10] 21578(98.0%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [35] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [11] 2234(10.1%) 0(0.0%) finalize-table! ...k/herbie/src/mainloop.rkt:264:0 post-process [20] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [12] 1782(8.1%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [22] 88.6% extract-alt [25] 11.4% ----------------------------------------------------------------------- loop [57] 43.3% jloop [3] 56.7% [13] 1578(7.2%) 0(0.0%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [60] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [14] 1032(4.7%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [23] 100.0% ----------------------------------------------------------------------- ??? [4] 100.0% [15] 806(3.7%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:487:35 parse-loop50 [62] 100.0% ----------------------------------------------------------------------- ??? [5] 100.0% [16] 804(3.7%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [69] 100.0% ----------------------------------------------------------------------- ??? [7] 100.0% [17] 402(1.8%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:396:33 for-loop [24] 100.0% ----------------------------------------------------------------------- ??? [6] 100.0% [18] 402(1.8%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [69] 100.0% ----------------------------------------------------------------------- ??? [9] 100.0% [19] 202(0.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:324:46 simplify [21] 100.0% ----------------------------------------------------------------------- finalize-table! [11] 100.0% [20] 2234(10.1%) 0(0.0%) post-process .../ztatlock/herbie/src/glue.rkt:95:0 for-loop [26] 72.2% loop [65] 27.8% ----------------------------------------------------------------------- for-loop [19] 12.5% hash-ref! [69] 87.5% [21] 1612(7.3%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 f37 [36] 100.0% ----------------------------------------------------------------------- get-final-combination [12] 100.0% [22] 1578(7.2%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [27] 100.0% ----------------------------------------------------------------------- for-loop [14] 100.0% [23] 1032(4.7%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [28] 80.6% finalize-iter! [30] 19.4% ----------------------------------------------------------------------- for-loop [17] 100.0% [24] 402(1.8%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:398:39 hash-ref! [69] 100.0% ----------------------------------------------------------------------- get-final-combination [12] 100.0% [25] 204(0.9%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 argmins [29] 100.0% ----------------------------------------------------------------------- post-process [20] 100.0% [26] 1612(7.3%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:119:17 append-map [31] 100.0% ----------------------------------------------------------------------- split-table [22] 100.0% [27] 1578(7.2%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [32] 100.0% ----------------------------------------------------------------------- run-iter! [23] 100.0% [28] 832(3.8%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [33] 100.0% ----------------------------------------------------------------------- extract-alt [25] 100.0% [29] 204(0.9%) 0(0.0%) argmins /home/ztatlock/herbie/src/common.rkt:85:0 composed [44] 100.0% ----------------------------------------------------------------------- run-iter! [23] 100.0% [30] 200(0.9%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [34] 100.0% ----------------------------------------------------------------------- parse-loop50 [62] 3.1% f37 [36] 6.2% for-loop [26] 90.7% [31] 1612(7.3%) 0(0.0%) append-map ...acket/collects/racket/list.rkt:565:2 taylor-alt [37] 78.2% loop [65] 15.6% parse-loop50 [62] 3.1% f37 [36] 3.1% ----------------------------------------------------------------------- infer-splitpoints4 [27] 100.0% [32] 1578(7.2%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [38] 100.0% ----------------------------------------------------------------------- simplify! [28] 100.0% [33] 832(3.8%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [35] 100.0% ----------------------------------------------------------------------- finalize-iter! [30] 100.0% [34] 200(0.9%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [39] 100.0% ----------------------------------------------------------------------- for-loop [33] 1.3% run [10] 48.8% [35] 22026(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 47.9% loop [40] 39.1% run-improve58 [2] 11.8% simplify [43] 1.3% ----------------------------------------------------------------------- append-map [31] 3.1% composed [44] 3.1% loop [65] 9.4% map [59] 9.4% simplify [21] 75.0% [36] 1612(7.3%) 402(1.8%) f37 ...t/collects/racket/match/compiler.rkt:499:40 map [59] 65.7% parse-app [45] 12.5% append-map [31] 6.2% compose [46] 3.1% composed [44] 3.1% ----------------------------------------------------------------------- loop [65] 12.5% append-map [31] 87.5% [37] 1612(7.3%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [41] 100.0% ----------------------------------------------------------------------- option-on-expr [32] 100.0% [38] 1578(7.2%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [42] 100.0% ----------------------------------------------------------------------- ??? [34] 100.0% [39] 200(0.9%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [47] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 2.4% ??? [35] 97.6% [40] 16978(77.1%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 loop [48] 53.7% make-exacts* [54] 35.6% loop [55] 9.5% ----------------------------------------------------------------------- taylor-alt [37] 100.0% [41] 1612(7.3%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [49] 100.0% ----------------------------------------------------------------------- sort-context-on-expr [38] 100.0% [42] 1578(7.2%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [50] 72.1% loop [57] 27.9% ----------------------------------------------------------------------- ??? [35] 100.0% [43] 832(3.8%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [75] 50.7% iterate-egraph!5 [80] 25.0% for-loop [52] 24.3% ----------------------------------------------------------------------- f37 [36] 49.5% argmins [29] 50.5% [44] 404(1.8%) 0(0.0%) composed ...ollects/racket/private/list.rkt:321:16 errors [51] 50.5% f37 [36] 49.5% ----------------------------------------------------------------------- f37 [36] 100.0% [45] 202(0.9%) 202(0.9%) parse-app .../collects/racket/private/kw.rkt:903:2 ----------------------------------------------------------------------- f37 [36] 100.0% [46] 202(0.9%) 202(0.9%) compose ...collects/racket/private/list.rkt:385:12 ----------------------------------------------------------------------- for-loop [39] 100.0% [47] 200(0.9%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [53] 100.0% ----------------------------------------------------------------------- loop [40] 100.0% [48] 9120(41.4%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [55] 54.6% make-exacts* [54] 40.3% eval-prog [60] 5.1% ----------------------------------------------------------------------- location-do [49] 27.2% for-loop [41] 72.8% [49] 1612(7.3%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [56] 72.8% location-do [49] 27.2% ----------------------------------------------------------------------- sort [42] 41.1% copying-mergesort [50] 58.9% [50] 1138(5.2%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [50] 58.9% loop [57] 21.4% jloop [3] 19.6% ----------------------------------------------------------------------- composed [44] 100.0% [51] 204(0.9%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [58] 100.0% ----------------------------------------------------------------------- simplify [43] 100.0% [52] 202(0.9%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [80] 100.0% ----------------------------------------------------------------------- atab-add-altn [47] 100.0% [53] 200(0.9%) 200(0.9%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 ----------------------------------------------------------------------- loop [48] 37.8% loop [40] 62.2% [54] 9718(44.1%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 loop [65] 53.9% map [59] 43.7% eval-prog [60] 2.4% ----------------------------------------------------------------------- loop [40] 24.5% loop [48] 75.5% [55] 6598(30.0%) 216(1.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [59] 96.7% ----------------------------------------------------------------------- location-do [49] 100.0% [56] 1612(7.3%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [61] 100.0% ----------------------------------------------------------------------- copying-mergesort [50] 35.7% sort [42] 64.3% [57] 684(3.1%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [13] 100.0% ----------------------------------------------------------------------- errors [51] 100.0% [58] 204(0.9%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ->flonum [70] 100.0% ----------------------------------------------------------------------- parse-loop50 [62] 0.9% f37 [36] 9.4% make-exacts* [54] 35.9% loop [55] 53.9% [59] 11840(53.8%) 200(0.9%) map ...acket/collects/racket/private/map.rkt:21:13 loop [65] 88.9% parse-loop50 [62] 7.7% f37 [36] 1.7% ----------------------------------------------------------------------- make-exacts* [54] 10.4% loop [48] 20.3% ??? [13] 69.3% [60] 2276(10.3%) 1596(7.2%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 go [63] 11.0% parse-lambda [64] 9.6% hash-ref! [69] 9.3% ----------------------------------------------------------------------- approximate9 [56] 100.0% [61] 1612(7.3%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [69] 100.0% ----------------------------------------------------------------------- parse-loop50 [62] 12.8% loop [65] 13.6% append-map [31] 14.2% for-loop [15] 27.9% map [59] 31.5% [62] 1410(6.4%) 806(3.7%) parse-loop50 ...s/racket/match/compiler.rkt:410:15 for-loop [66] 27.9% loop [65] 24.3% append-map [31] 14.2% parse-loop50 [62] 12.8% map [59] 3.6% ----------------------------------------------------------------------- eval-prog [60] 100.0% [63] 250(1.1%) 0(0.0%) go .../collects/racket/private/qq-and-or.rkt:50:20 loop [67] 100.0% ----------------------------------------------------------------------- eval-prog [60] 100.0% [64] 218(1.0%) 218(1.0%) parse-lambda ...llects/racket/private/kw.rkt:393:2 ----------------------------------------------------------------------- ??? [8] 1.2% append-map [31] 1.4% post-process [20] 1.5% make-exacts* [54] 1.9% parse-loop50 [62] 2.6% map [59] 2.6% loop [65] 88.8% [65] 17504(79.5%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [65] 88.8% parse-loop50 [62] 3.5% ??? [68] 3.3% completely-simplify-alt [71] 1.5% f37 [36] 1.4% hash-ref! [69] 1.2% taylor-alt [37] 0.3% ->flonum [70] 0.1% ----------------------------------------------------------------------- parse-loop50 [62] 100.0% [66] 806(3.7%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:490:59 hash-ref! [69] 100.0% ----------------------------------------------------------------------- go [63] 33.3% loop [67] 66.7% [67] 250(1.1%) 250(1.1%) loop ...llects/racket/private/qq-and-or.rkt:101:61 loop [67] 66.7% ----------------------------------------------------------------------- loop [65] 100.0% [68] 14886(67.6%) 1120(5.1%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [72] 60.0% real->bigfloat [73] 30.9% ...e/case-arrow.rkt:150:50 [76] 1.6% ----------------------------------------------------------------------- eval-prog [60] 3.9% for-loop [18] 4.0% for-loop [24] 4.0% loop [65] 7.7% for-loop [16] 9.5% for-loop [66] 11.0% ??? [74] 29.9% loop [61] 29.9% [69] 1824(8.3%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [74] 29.9% simplify [21] 28.0% ??? [4] 11.0% ??? [5] 9.5% ??? [8] 7.7% ??? [7] 4.0% ??? [6] 4.0% bigfloat-hash [77] 3.9% ??? [9] 1.8% ----------------------------------------------------------------------- for-loop [58] 20.8% loop [65] 79.2% [70] 982(4.5%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [94] 79.2% ??? [78] 20.8% ----------------------------------------------------------------------- loop [65] 100.0% [71] 622(2.8%) 0(0.0%) completely-simplify-alt ...erbie/src/glue.rkt:87:0 simplify-expr [75] 100.0% ----------------------------------------------------------------------- ??? [68] 100.0% [72] 8934(40.6%) 0(0.0%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [85] 60.2% ...higher-order.rkt:369:33 [79] 27.9% ...higher-order.rkt:373:33 [81] 6.9% bf<= [82] 2.6% bf* [84] 2.4% ----------------------------------------------------------------------- ??? [68] 100.0% [73] 4598(20.9%) 4394(19.9%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [95] 4.4% ----------------------------------------------------------------------- hash-ref! [69] 100.0% [74] 1612(7.3%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [69] 100.0% ----------------------------------------------------------------------- simplify [43] 40.4% completely-simplify-alt [71] 59.6% [75] 1044(4.7%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [80] 100.0% ----------------------------------------------------------------------- ??? [68] 100.0% [76] 234(1.1%) 234(1.1%) ...e/case-arrow.rkt:150:50 (unknown source) ----------------------------------------------------------------------- hash-ref! [69] 100.0% [77] 212(1.0%) 0(0.0%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:165:0 bfcanonicalize [83] 100.0% ----------------------------------------------------------------------- ->flonum [70] 100.0% [78] 204(0.9%) 204(0.9%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ----------------------------------------------------------------------- ??? [72] 100.0% [79] 2496(11.3%) 0(0.0%) ...higher-order.rkt:369:33 (unknown source) ??? [89] 64.7% ??? [86] 35.3% ----------------------------------------------------------------------- for-loop [52] 13.9% simplify [43] 14.3% simplify-expr [75] 71.8% [80] 1454(6.6%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [87] 100.0% ----------------------------------------------------------------------- ??? [72] 100.0% [81] 612(2.8%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [86] 100.0% ----------------------------------------------------------------------- ??? [72] 100.0% [82] 236(1.1%) 0(0.0%) bf<= ...h/private/bigfloat/bigfloat-mpfr.rkt:127:4 ??? [94] 100.0% ----------------------------------------------------------------------- bigfloat-hash [77] 100.0% [83] 212(1.0%) 0(0.0%) bfcanonicalize .../private/bigfloat/mpfr.rkt:155:0 bigfloat->sig+exp [88] 100.0% ----------------------------------------------------------------------- ??? [72] 100.0% [84] 210(1.0%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [85] 100.0% ----------------------------------------------------------------------- bf* [84] 3.8% ??? [72] 96.2% [85] 5590(25.4%) 1648(7.5%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfadd [90] 38.4% ??? [94] 23.6% bfsqr [92] 8.6% ----------------------------------------------------------------------- ...higher-order.rkt:373:33 [81] 41.0% ...higher-order.rkt:369:33 [79] 59.0% [86] 1494(6.8%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [89] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [80] 100.0% [87] 1454(6.6%) 220(1.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [91] 43.3% loop [93] 27.8% apply-match [96] 13.8% ----------------------------------------------------------------------- bfcanonicalize [83] 100.0% [88] 212(1.0%) 212(1.0%) bigfloat->sig+exp ...ivate/bigfloat/mpfr.rkt:370:0 ----------------------------------------------------------------------- ??? [86] 48.1% ...higher-order.rkt:369:33 [79] 51.9% [89] 3108(14.1%) 702(3.2%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [94] 77.4% ----------------------------------------------------------------------- ??? [85] 100.0% [90] 2144(9.7%) 1448(6.6%) bfadd ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [95] 32.5% ----------------------------------------------------------------------- for-loop [91] 34.0% one-iter [87] 66.0% [91] 630(2.9%) 422(1.9%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [91] 34.0% match-e [97] 16.5% ----------------------------------------------------------------------- ??? [85] 100.0% [92] 478(2.2%) 248(1.1%) bfsqr ...-lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [95] 48.1% ----------------------------------------------------------------------- one-iter [87] 100.0% [93] 404(1.8%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [96] 100.0% ----------------------------------------------------------------------- bf<= [82] 5.0% ->flonum [70] 16.4% ??? [85] 27.8% ??? [89] 50.8% [94] 4740(21.5%) 2754(12.5%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [98] 41.9% ----------------------------------------------------------------------- real->bigfloat [73] 18.1% bfsqr [92] 20.4% bfadd [90] 61.6% [95] 1130(5.1%) 1130(5.1%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ----------------------------------------------------------------------- one-iter [87] 33.1% loop [93] 66.9% [96] 604(2.7%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 mk-enode! [99] 100.0% ----------------------------------------------------------------------- for-loop [91] 100.0% [97] 208(0.9%) 208(0.9%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 ----------------------------------------------------------------------- ??? [94] 100.0% [98] 1986(9.0%) 890(4.0%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [100] 55.2% ----------------------------------------------------------------------- apply-match [96] 100.0% [99] 604(2.7%) 404(1.8%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 hash-has-key? [101] 33.1% ----------------------------------------------------------------------- ??? [98] 100.0% [100] 1096(5.0%) 1096(5.0%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 ----------------------------------------------------------------------- mk-enode! [99] 100.0% [101] 200(0.9%) 200(0.9%) hash-has-key? ...et/private/more-scheme.rkt:368:13 -----------------------------------------------------------------------