Profiling results ----------------- Total cpu time observed: 16540ms (out of 16912ms) Number of samples taken: 69 (once every 240ms) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= ??? [35] 100.0% [1] 16304(98.6%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [9] 100.0% ----------------------------------------------------------------------- ??? [35] 100.0% [2] 5842(35.3%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [11] 53.1% get-final-combination [12] 26.4% loop [10] 20.5% ----------------------------------------------------------------------- ??? [35] 100.0% [3] 2468(14.9%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 iterate-egraph!5 [18] 66.5% simplify-expr [13] 25.3% for-loop [15] 8.2% ----------------------------------------------------------------------- hash-ref! [75] 100.0% [4] 1124(6.8%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 loop [47] 100.0% ----------------------------------------------------------------------- copying-mergesort [48] 100.0% [5] 442(2.7%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [65] 100.0% ----------------------------------------------------------------------- hash-ref! [75] 100.0% [6] 222(1.3%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:338:33 for-loop [14] 100.0% ----------------------------------------------------------------------- hash-ref! [75] 100.0% [7] 210(1.3%) 0(0.0%) f6 ...et/collects/racket/match/compiler.rkt:499:40 map [28] 100.0% ----------------------------------------------------------------------- loop [47] 100.0% [8] 210(1.3%) 0(0.0%) ??? ...ket/collects/racket/private/list.rkt:323:18 hash-ref! [75] 100.0% ----------------------------------------------------------------------- profile-thunk14 [1] 100.0% [9] 16304(98.6%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [35] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 10.1% ??? [35] 89.9% [10] 11896(71.9%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 loop [16] 43.3% make-exacts* [20] 43.0% loop [21] 13.7% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [11] 3100(18.7%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [17] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [12] 1544(9.3%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [19] 100.0% ----------------------------------------------------------------------- simplify [3] 100.0% [13] 624(3.8%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [18] 100.0% ----------------------------------------------------------------------- ??? [6] 100.0% [14] 222(1.3%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:341:46 hash-ref! [75] 100.0% ----------------------------------------------------------------------- simplify [3] 100.0% [15] 202(1.2%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [18] 100.0% ----------------------------------------------------------------------- loop [10] 100.0% [16] 5146(31.1%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 make-exacts* [20] 42.5% loop [21] 36.1% eval-prog [71] 21.3% ----------------------------------------------------------------------- for-loop [11] 100.0% [17] 3100(18.7%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [22] 79.6% gen-series! [25] 7.2% localize-error [26] 6.8% finalize-iter! [27] 6.5% ----------------------------------------------------------------------- for-loop [15] 8.2% simplify-expr [13] 25.3% simplify [3] 66.5% [18] 2468(14.9%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [23] 100.0% ----------------------------------------------------------------------- get-final-combination [12] 100.0% [19] 1544(9.3%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [24] 100.0% ----------------------------------------------------------------------- loop [16] 29.9% loop [10] 70.1% [20] 7306(44.2%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [28] 56.1% loop [47] 31.8% eval-prog [71] 12.0% ----------------------------------------------------------------------- loop [10] 46.7% loop [16] 53.3% [21] 3492(21.1%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [28] 100.0% ----------------------------------------------------------------------- run-iter! [17] 100.0% [22] 2468(14.9%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [29] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [18] 100.0% [23] 2468(14.9%) 202(1.2%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [31] 49.8% loop [32] 42.1% ----------------------------------------------------------------------- split-table [19] 100.0% [24] 1544(9.3%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [30] 100.0% ----------------------------------------------------------------------- run-iter! [17] 100.0% [25] 222(1.3%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [33] 100.0% ----------------------------------------------------------------------- run-iter! [17] 100.0% [26] 210(1.3%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [75] 100.0% ----------------------------------------------------------------------- run-iter! [17] 100.0% [27] 200(1.2%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [34] 100.0% ----------------------------------------------------------------------- f6 [7] 2.7% loop [21] 44.7% make-exacts* [20] 52.6% [28] 7804(47.2%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [47] 100.0% ----------------------------------------------------------------------- simplify! [22] 100.0% [29] 2468(14.9%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [35] 100.0% ----------------------------------------------------------------------- infer-splitpoints4 [24] 100.0% [30] 1544(9.3%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [36] 85.0% pick-errors [38] 15.0% ----------------------------------------------------------------------- for-loop [31] 50.0% one-iter [23] 50.0% [31] 1228(7.4%) 422(2.6%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [31] 50.0% match-e [42] 32.8% ----------------------------------------------------------------------- one-iter [23] 100.0% [32] 1038(6.3%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [37] 100.0% ----------------------------------------------------------------------- gen-series! [25] 100.0% [33] 222(1.3%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [39] 100.0% ----------------------------------------------------------------------- finalize-iter! [27] 100.0% [34] 200(1.2%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [40] 100.0% ----------------------------------------------------------------------- for-loop [29] 5.0% run [9] 46.8% [35] 16540(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 46.8% loop [10] 33.1% run-improve58 [2] 15.2% simplify [3] 5.0% ----------------------------------------------------------------------- option-on-expr [30] 100.0% [36] 1312(7.9%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [41] 100.0% ----------------------------------------------------------------------- loop [32] 100.0% [37] 1038(6.3%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 for-loop [43] 41.8% merge-egraph-nodes! [49] 38.7% match-e [42] 19.5% ----------------------------------------------------------------------- option-on-expr [30] 100.0% [38] 232(1.4%) 0(0.0%) pick-errors ...k/herbie/src/core/regimes.rkt:173:0 for-loop [44] 100.0% ----------------------------------------------------------------------- for-loop [33] 100.0% [39] 222(1.3%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [45] 100.0% ----------------------------------------------------------------------- ??? [34] 100.0% [40] 200(1.2%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [46] 100.0% ----------------------------------------------------------------------- sort-context-on-expr [36] 100.0% [41] 1312(7.9%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [48] 65.7% loop [56] 34.3% ----------------------------------------------------------------------- for-loop [50] 10.0% apply-match [37] 20.0% for-loop [31] 69.9% [42] 1008(6.1%) 202(1.2%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [50] 30.1% list-cartesian-product [53] 20.0% for-loop [54] 20.0% loop [47] 19.8% ----------------------------------------------------------------------- apply-match [37] 100.0% [43] 434(2.6%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 merge-egraph-nodes! [49] 51.2% mk-enode! [52] 48.8% ----------------------------------------------------------------------- pick-errors [38] 100.0% [44] 232(1.4%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:176:4 eval-prog [71] 100.0% ----------------------------------------------------------------------- taylor-alt [39] 100.0% [45] 222(1.3%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [51] 100.0% ----------------------------------------------------------------------- for-loop [40] 100.0% [46] 200(1.2%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [55] 100.0% ----------------------------------------------------------------------- match-e [42] 0.0% parse-loop12 [94] 0.0% make-exacts* [20] 0.4% map [28] 3.1% ??? [4] 9.8% loop [47] 86.6% [47] 11454(69.3%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [47] 86.6% hash-ref! [75] 9.8% ??? [70] 3.3% ->flonum [76] 0.2% ??? [8] 0.0% ??? [91] 0.0% foldl [63] 0.0% ----------------------------------------------------------------------- sort [41] 44.5% copying-mergesort [48] 55.5% [48] 862(5.2%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [48] 55.5% loop [56] 31.7% jloop [5] 12.8% ----------------------------------------------------------------------- merge-egraph-nodes! [49] 16.2% for-loop [43] 35.6% apply-match [37] 48.2% [49] 624(3.8%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 for-loop [57] 35.6% for-loop [62] 32.1% merge-egraph-nodes! [49] 16.2% update-leader! [61] 16.2% ----------------------------------------------------------------------- match-e [42] 100.0% [50] 404(2.4%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [42] 50.0% ??? [60] 50.0% ----------------------------------------------------------------------- for-loop [45] 100.0% [51] 222(1.3%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [58] 100.0% ----------------------------------------------------------------------- for-loop [43] 100.0% [52] 212(1.3%) 0(0.0%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 new-enode [59] 100.0% ----------------------------------------------------------------------- match-e [42] 100.0% [53] 202(1.2%) 202(1.2%) list-cartesian-product ...src/core/ematch.rkt:20:0 ----------------------------------------------------------------------- match-e [42] 100.0% [54] 202(1.2%) 202(1.2%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 ----------------------------------------------------------------------- atab-add-altn [46] 100.0% [55] 200(1.2%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [64] 100.0% ----------------------------------------------------------------------- copying-mergesort [48] 48.3% sort [41] 51.7% [56] 870(5.3%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [65] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [49] 100.0% [57] 222(1.3%) 222(1.3%) for-loop ...tlock/herbie/src/core/egraph.rkt:232:6 ----------------------------------------------------------------------- location-do [51] 100.0% [58] 222(1.3%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [66] 100.0% ----------------------------------------------------------------------- mk-enode! [52] 100.0% [59] 212(1.3%) 212(1.3%) new-enode ...atlock/herbie/src/core/enode.rkt:68:0 ----------------------------------------------------------------------- for-loop [50] 100.0% [60] 202(1.2%) 202(1.2%) ??? /home/ztatlock/herbie/src/core/ematch.rkt:50:5 ----------------------------------------------------------------------- merge-egraph-nodes! [49] 100.0% [61] 202(1.2%) 0(0.0%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [67] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [49] 100.0% [62] 200(1.2%) 200(1.2%) for-loop ...e/ztatlock/herbie/src/common.rkt:205:9 ----------------------------------------------------------------------- loop [47] 100.0% [63] 200(1.2%) 0(0.0%) foldl ...et/collects/racket/private/list.rkt:229:4 merge2 [68] 100.0% ----------------------------------------------------------------------- best-and-tied-at-points [55] 100.0% [64] 200(1.2%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [69] 100.0% ----------------------------------------------------------------------- jloop [5] 33.7% loop [56] 66.3% [65] 1312(7.9%) 0(0.0%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [71] 100.0% ----------------------------------------------------------------------- approximate9 [58] 100.0% [66] 222(1.3%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [75] 100.0% ----------------------------------------------------------------------- update-leader! [61] 100.0% [67] 202(1.2%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [72] 100.0% ----------------------------------------------------------------------- foldl [63] 100.0% [68] 200(1.2%) 200(1.2%) merge2 ...ztatlock/herbie/src/core/ematch.rkt:31:0 ----------------------------------------------------------------------- errors [64] 100.0% [69] 200(1.2%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [70] 100.0% ----------------------------------------------------------------------- for-loop [69] 2.3% loop [47] 97.7% [70] 8822(53.3%) 450(2.7%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [73] 65.1% real->bigfloat [74] 27.5% ->flonum [76] 2.3% ----------------------------------------------------------------------- for-loop [44] 6.6% make-exacts* [20] 24.9% loop [16] 31.2% ??? [65] 37.3% [71] 3520(21.3%) 868(5.2%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 hash-ref! [75] 56.1% ??? [77] 6.6% parse-lambda [78] 6.3% go [79] 6.2% ----------------------------------------------------------------------- for-loop [67] 100.0% [72] 202(1.2%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [80] 100.0% ----------------------------------------------------------------------- ??? [70] 100.0% [73] 5744(34.7%) 248(1.5%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [91] 67.1% ...higher-order.rkt:369:33 [83] 16.5% ...higher-order.rkt:373:33 [84] 7.7% bf* [85] 4.4% ----------------------------------------------------------------------- ??? [70] 100.0% [74] 2428(14.7%) 2208(13.3%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [102] 9.1% ----------------------------------------------------------------------- for-loop [14] 3.1% ??? [88] 3.1% loop [66] 3.1% ??? [8] 4.4% localize-error [26] 4.4% loop [47] 29.8% eval-prog [71] 52.3% [75] 2408(14.6%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 bigfloat-hash [81] 52.3% ??? [4] 29.8% parse-loop12 [94] 4.4% f6 [7] 4.4% ??? [88] 3.1% ??? [6] 3.1% simplify [87] 3.1% ----------------------------------------------------------------------- ??? [70] 13.4% loop [47] 86.6% [76] 1498(9.1%) 214(1.3%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [82] 71.6% ??? [101] 14.2% ----------------------------------------------------------------------- eval-prog [71] 100.0% [77] 234(1.4%) 0(0.0%) ??? ...collects/racket/private/qq-and-or.rkt:155:9 ??? [86] 100.0% ----------------------------------------------------------------------- eval-prog [71] 100.0% [78] 222(1.3%) 222(1.3%) parse-lambda ...llects/racket/private/kw.rkt:393:2 ----------------------------------------------------------------------- eval-prog [71] 100.0% [79] 220(1.3%) 0(0.0%) go .../collects/racket/private/qq-and-or.rkt:50:20 loop [89] 100.0% ----------------------------------------------------------------------- for-loop [72] 100.0% [80] 202(1.2%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [90] 100.0% ----------------------------------------------------------------------- hash-ref! [75] 100.0% [81] 1976(11.9%) 0(0.0%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:165:0 bfcanonicalize [92] 52.6% sig+exp->bigfloat [93] 47.4% ----------------------------------------------------------------------- ->flonum [76] 100.0% [82] 1072(6.5%) 1072(6.5%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ----------------------------------------------------------------------- ??? [73] 100.0% [83] 950(5.7%) 244(1.5%) ...higher-order.rkt:369:33 (unknown source) ??? [99] 74.3% ----------------------------------------------------------------------- ??? [73] 100.0% [84] 440(2.7%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [95] 55.0% ??? [99] 45.0% ----------------------------------------------------------------------- ??? [73] 100.0% [85] 254(1.5%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [91] 100.0% ----------------------------------------------------------------------- ??? [77] 100.0% [86] 234(1.4%) 234(1.4%) ??? ...ollects/racket/private/qq-and-or.rkt:164:21 ----------------------------------------------------------------------- hash-ref! [75] 100.0% [87] 222(1.3%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 parse-loop12 [94] 100.0% ----------------------------------------------------------------------- hash-ref! [75] 100.0% [88] 222(1.3%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [75] 100.0% ----------------------------------------------------------------------- go [79] 100.0% [89] 220(1.3%) 220(1.3%) loop ...llects/racket/private/qq-and-or.rkt:101:61 ----------------------------------------------------------------------- hash-update! [80] 100.0% [90] 202(1.2%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [96] 100.0% ----------------------------------------------------------------------- loop [47] 4.9% bf* [85] 5.9% ??? [73] 89.2% [91] 4316(26.1%) 1446(8.7%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfadd [97] 28.0% bfsqr [98] 27.0% ??? [101] 11.5% ----------------------------------------------------------------------- bigfloat-hash [81] 100.0% [92] 1040(6.3%) 1040(6.3%) bfcanonicalize .../private/bigfloat/mpfr.rkt:155:0 ----------------------------------------------------------------------- bigfloat-hash [81] 100.0% [93] 936(5.7%) 732(4.4%) sig+exp->bigfloat ...ivate/bigfloat/mpfr.rkt:385:0 integer->mpz [100] 21.8% ----------------------------------------------------------------------- simplify [87] 8.6% parse-loop12 [94] 42.8% hash-ref! [75] 48.6% [94] 432(2.6%) 222(1.3%) parse-loop12 ...s/racket/match/compiler.rkt:410:15 loop [47] 48.6% parse-loop12 [94] 42.8% ----------------------------------------------------------------------- ...higher-order.rkt:373:33 [84]100.0% [95] 242(1.5%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [99] 100.0% ----------------------------------------------------------------------- ??? [90] 100.0% [96] 202(1.2%) 202(1.2%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 ----------------------------------------------------------------------- ??? [91] 100.0% [97] 1210(7.3%) 466(2.8%) bfadd ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [102] 61.5% ----------------------------------------------------------------------- ??? [91] 100.0% [98] 1164(7.0%) 456(2.8%) bfsqr ...-lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [102] 60.8% ----------------------------------------------------------------------- ...higher-order.rkt:373:33 [84] 17.3% ??? [95] 21.1% ...higher-order.rkt:369:33 [83] 61.6% [99] 1146(6.9%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [101] 100.0% ----------------------------------------------------------------------- sig+exp->bigfloat [93] 100.0% [100] 204(1.2%) 204(1.2%) integer->mpz ...math/private/bigfloat/gmp.rkt:87:0 ----------------------------------------------------------------------- ->flonum [76] 11.4% ??? [91] 26.8% ??? [99] 61.8% [101] 1854(11.2%) 482(2.9%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [103] 74.0% ----------------------------------------------------------------------- real->bigfloat [74] 13.2% bfsqr [98] 42.3% bfadd [97] 44.5% [102] 1672(10.1%) 1672(10.1%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ----------------------------------------------------------------------- ??? [101] 100.0% [103] 1372(8.3%) 722(4.4%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [104] 47.4% ----------------------------------------------------------------------- ??? [103] 100.0% [104] 650(3.9%) 650(3.9%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 -----------------------------------------------------------------------