Profiling results ----------------- Total cpu time observed: 19900ms (out of 20284ms) Number of samples taken: 83 (once every 240ms) ====================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ====================================================================== ??? [37] 100.0% [1] 19440(97.7%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [9] 100.0% ---------------------------------------------------------------------- ??? [37] 100.0% [2] 9790(49.2%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [10] 95.9% get-final-combination [16] 4.1% ---------------------------------------------------------------------- loop [71] 2.4% ??? [37] 97.6% [3] 8304(41.7%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [11] 56.8% for-loop [12] 22.7% iterate-egraph!5 [19] 20.5% ---------------------------------------------------------------------- hash-ref! [76] 100.0% [4] 720(3.6%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 loop [71] 72.2% hash-ref! [76] 27.8% ---------------------------------------------------------------------- hash-ref! [76] 100.0% [5] 642(3.2%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 f16 [15] 65.7% parse-loop50 [79] 34.3% ---------------------------------------------------------------------- hash-ref! [76] 100.0% [6] 642(3.2%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [13] 100.0% ---------------------------------------------------------------------- location-do [53] 100.0% [7] 642(3.2%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [14] 100.0% ---------------------------------------------------------------------- hash-ref! [76] 100.0% [8] 220(1.1%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:392:23 for-loop [17] 100.0% ---------------------------------------------------------------------- profile-thunk14 [1] 100.0% [9] 19440(97.7%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [37] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [10] 9390(47.2%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [18] 100.0% ---------------------------------------------------------------------- simplify [3] 100.0% [11] 4720(23.7%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [19] 100.0% ---------------------------------------------------------------------- simplify [3] 100.0% [12] 1884(9.5%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [19] 89.4% loop [22] 10.6% ---------------------------------------------------------------------- ??? [6] 100.0% [13] 642(3.2%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [76] 100.0% ---------------------------------------------------------------------- approximate9 [7] 100.0% [14] 642(3.2%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [76] 100.0% ---------------------------------------------------------------------- simplify [5] 100.0% [15] 422(2.1%) 222(1.1%) f16 ...t/collects/racket/match/compiler.rkt:499:40 map [65] 47.4% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [16] 400(2.0%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 extract-alt [20] 100.0% ---------------------------------------------------------------------- ??? [8] 100.0% [17] 220(1.1%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:396:33 for-loop [21] 100.0% ---------------------------------------------------------------------- for-loop [10] 100.0% [18] 9390(47.2%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [23] 86.3% finalize-iter! [25] 6.9% gen-series! [26] 6.8% ---------------------------------------------------------------------- for-loop [12] 20.8% simplify [3] 21.0% simplify-expr [11] 58.2% [19] 8104(40.7%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [24] 97.5% map-enodes [27] 2.5% ---------------------------------------------------------------------- get-final-combination [16] 100.0% [20] 400(2.0%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 argmins [28] 50.0% loop [71] 50.0% ---------------------------------------------------------------------- for-loop [17] 100.0% [21] 220(1.1%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:398:39 hash-ref! [76] 100.0% ---------------------------------------------------------------------- for-loop [12] 100.0% [22] 200(1.0%) 0(0.0%) loop ...tatlock/herbie/src/core/simplify.rkt:203:2 pass [29] 100.0% ---------------------------------------------------------------------- run-iter! [18] 100.0% [23] 8104(40.7%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [30] 100.0% ---------------------------------------------------------------------- iterate-egraph!5 [19] 100.0% [24] 7902(39.7%) 200(1.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [31] 56.3% loop [32] 41.1% ---------------------------------------------------------------------- run-iter! [18] 100.0% [25] 644(3.2%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [33] 100.0% ---------------------------------------------------------------------- run-iter! [18] 100.0% [26] 642(3.2%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [34] 100.0% ---------------------------------------------------------------------- iterate-egraph!5 [19] 100.0% [27] 202(1.0%) 0(0.0%) map-enodes ...ock/herbie/src/core/egraph.rkt:139:0 loop [71] 100.0% ---------------------------------------------------------------------- extract-alt [20] 100.0% [28] 200(1.0%) 0(0.0%) argmins /home/ztatlock/herbie/src/common.rkt:85:0 composed [35] 100.0% ---------------------------------------------------------------------- loop [22] 100.0% [29] 200(1.0%) 0(0.0%) pass ...tatlock/herbie/src/core/simplify.rkt:193:2 for-loop [36] 100.0% ---------------------------------------------------------------------- simplify! [23] 100.0% [30] 8104(40.7%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [37] 100.0% ---------------------------------------------------------------------- for-loop [31] 50.0% one-iter [24] 50.0% [31] 4452(22.4%) 1066(5.4%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [31] 50.0% match-e [43] 38.0% ---------------------------------------------------------------------- one-iter [24] 100.0% [32] 3250(16.3%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [38] 100.0% ---------------------------------------------------------------------- finalize-iter! [25] 100.0% [33] 644(3.2%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [39] 100.0% ---------------------------------------------------------------------- gen-series! [26] 100.0% [34] 642(3.2%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [40] 100.0% ---------------------------------------------------------------------- argmins [28] 100.0% [35] 200(1.0%) 0(0.0%) composed ...ollects/racket/private/list.rkt:321:16 errors [61] 100.0% ---------------------------------------------------------------------- pass [29] 100.0% [36] 200(1.0%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:196:29 argmin [41] 100.0% ---------------------------------------------------------------------- for-loop [30] 13.9% run [9] 42.8% [37] 19660(98.8%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 42.8% loop [42] 25.1% run-improve58 [2] 18.2% simplify [3] 13.9% ---------------------------------------------------------------------- loop [32] 100.0% [38] 3250(16.3%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 match-e [43] 38.8% merge-egraph-nodes! [51] 26.6% for-loop [46] 14.2% mk-enode! [47] 13.6% update-leader! [60] 6.8% ---------------------------------------------------------------------- ??? [33] 100.0% [39] 644(3.2%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [44] 100.0% ---------------------------------------------------------------------- for-loop [34] 100.0% [40] 642(3.2%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [45] 100.0% ---------------------------------------------------------------------- for-loop [36] 100.0% [41] 200(1.0%) 0(0.0%) argmin ...re/racket/collects/racket/list.rkt:743:0 expression-cost [48] 100.0% ---------------------------------------------------------------------- ??? [37] 100.0% [42] 9870(49.6%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [57] 50.0% loop [49] 50.0% ---------------------------------------------------------------------- for-loop [59] 15.9% apply-match [38] 20.3% for-loop [31] 63.8% [43] 4648(23.4%) 2344(11.8%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [50] 39.9% for-loop [59] 4.7% curry* [55] 2.4% custom-in-set [54] 2.4% loop [71] 2.3% ---------------------------------------------------------------------- for-loop [39] 100.0% [44] 644(3.2%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [52] 100.0% ---------------------------------------------------------------------- taylor-alt [40] 100.0% [45] 642(3.2%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [53] 100.0% ---------------------------------------------------------------------- apply-match [38] 100.0% [46] 462(2.3%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 merge-egraph-nodes! [51] 52.4% loop! [80] 47.6% ---------------------------------------------------------------------- apply-match [38] 100.0% [47] 442(2.2%) 442(2.2%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 ---------------------------------------------------------------------- argmin [41] 100.0% [48] 200(1.0%) 0(0.0%) expression-cost ...k/herbie/src/programs.rkt:212:0 compile [56] 100.0% ---------------------------------------------------------------------- loop [42] 100.0% [49] 4932(24.8%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [58] 54.3% make-exacts* [57] 23.3% eval-prog [66] 22.4% ---------------------------------------------------------------------- match-e [43] 100.0% [50] 2286(11.5%) 622(3.1%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [59] 45.5% list-cartesian-product [62] 36.0% ---------------------------------------------------------------------- merge-egraph-nodes! [51] 20.0% for-loop [46] 21.9% apply-match [38] 58.1% [51] 1106(5.6%) 242(1.2%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [60] 48.2% merge-egraph-nodes! [51] 20.0% enode-merge! [64] 9.9% ---------------------------------------------------------------------- atab-add-altn [44] 100.0% [52] 644(3.2%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [61] 100.0% ---------------------------------------------------------------------- for-loop [45] 27.9% location-do [53] 72.1% [53] 642(3.2%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 location-do [53] 72.1% approximate9 [7] 27.9% ---------------------------------------------------------------------- match-e [43] 100.0% [54] 220(1.1%) 220(1.1%) custom-in-set ...acket/private/set-types.rkt:578:0 ---------------------------------------------------------------------- match-e [43] 100.0% [55] 220(1.1%) 0(0.0%) curry* ...racket/collects/racket/function.rkt:44:2 procedure-arity [63] 100.0% ---------------------------------------------------------------------- expression-cost [48] 100.0% [56] 200(1.0%) 0(0.0%) compile .../ztatlock/herbie/src/programs.rkt:189:0 hash-ref! [76] 100.0% ---------------------------------------------------------------------- loop [49] 18.9% loop [42] 81.1% [57] 6086(30.6%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 loop [71] 54.3% map [65] 41.1% eval-prog [66] 4.5% ---------------------------------------------------------------------- loop [49] 100.0% [58] 2680(13.5%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [65] 100.0% ---------------------------------------------------------------------- match-e [43] 26.2% for-loop [50] 73.8% [59] 1682(8.5%) 200(1.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [43] 88.1% ---------------------------------------------------------------------- apply-match [38] 25.5% merge-egraph-nodes! [51] 74.5% [60] 864(4.3%) 0(0.0%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [67] 100.0% ---------------------------------------------------------------------- composed [35] 23.7% best-and-tied-at-points [52] 76.3% [61] 844(4.2%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 eval-prog [66] 52.4% for-loop [69] 47.6% ---------------------------------------------------------------------- list-cartesian-product [62] 37.9% for-loop [50] 62.1% [62] 824(4.1%) 200(1.0%) list-cartesian-product ...src/core/ematch.rkt:20:0 for-loop [68] 50.0% list-cartesian-product [62] 37.9% ---------------------------------------------------------------------- curry* [55] 100.0% [63] 220(1.1%) 220(1.1%) procedure-arity ...ket/private/norm-arity.rkt:7:27 ---------------------------------------------------------------------- merge-egraph-nodes! [51] 100.0% [64] 220(1.1%) 0(0.0%) enode-merge! ...ck/herbie/src/core/enode.rkt:100:0 adopt-enode! [70] 100.0% ---------------------------------------------------------------------- parse-loop50 [79] 1.9% f16 [15] 1.9% make-exacts* [57] 46.5% loop [58] 49.8% [65] 5384(27.1%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [71] 98.1% parse-loop50 [79] 1.9% ---------------------------------------------------------------------- make-exacts* [57] 15.1% errors [61] 24.3% loop [49] 60.6% [66] 1822(9.2%) 1080(5.4%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 hash-ref! [76] 28.5% parse-app [73] 12.2% ---------------------------------------------------------------------- update-leader! [60] 100.0% [67] 864(4.3%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [72] 100.0% ---------------------------------------------------------------------- list-cartesian-product [62] 100.0% [68] 624(3.1%) 624(3.1%) for-loop ...atlock/herbie/src/core/ematch.rkt:24:8 ---------------------------------------------------------------------- errors [61] 100.0% [69] 402(2.0%) 402(2.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ---------------------------------------------------------------------- enode-merge! [64] 100.0% [70] 220(1.1%) 0(0.0%) adopt-enode! ...ock/herbie/src/core/enode.rkt:76:0 custom-set-union [74] 100.0% ---------------------------------------------------------------------- make-exacts* [57] 0.1% map-enodes [27] 0.2% extract-alt [20] 1.0% loop! [80] 1.1% match-e [43] 2.2% map [65] 2.3% ??? [4] 5.2% loop [71] 87.9% [71] 10050(50.5%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [71] 87.9% hash-ref! [76] 5.2% foldl [81] 2.2% parse-loop50 [79] 2.0% loop! [80] 1.1% simplify [3] 1.0% ??? [75] 0.5% for-loop [82] 0.2% ->flonum [78] 0.0% ---------------------------------------------------------------------- for-loop [67] 100.0% [72] 864(4.3%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [77] 100.0% ---------------------------------------------------------------------- eval-prog [66] 100.0% [73] 222(1.1%) 222(1.1%) parse-app .../collects/racket/private/kw.rkt:903:2 ---------------------------------------------------------------------- adopt-enode! [70] 100.0% [74] 220(1.1%) 220(1.1%) custom-set-union ...et/private/set-types.rkt:168:0 ---------------------------------------------------------------------- loop [71] 100.0% [75] 8000(40.2%) 228(1.1%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [83] 72.7% real->bigfloat [84] 24.4% ---------------------------------------------------------------------- for-loop [21] 3.2% ??? [4] 7.3% compile [56] 7.3% eval-prog [66] 12.3% ??? [86] 13.6% loop [14] 13.6% for-loop [13] 16.8% loop [71] 25.8% [76] 1362(6.8%) 200(1.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [4] 33.2% ??? [6] 16.8% ??? [86] 13.6% simplify [5] 13.6% bigfloat-hash [87] 12.3% ??? [8] 3.2% ---------------------------------------------------------------------- for-loop [72] 100.0% [77] 864(4.3%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [85] 100.0% ---------------------------------------------------------------------- loop [71] 100.0% [78] 490(2.5%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [88] 100.0% ---------------------------------------------------------------------- loop [71] 11.9% map [65] 11.9% simplify [5] 17.5% parse-loop50 [79] 58.7% [79] 420(2.1%) 420(2.1%) parse-loop50 ...s/racket/match/compiler.rkt:410:15 parse-loop50 [79] 58.7% map [65] 11.9% ---------------------------------------------------------------------- loop [71] 50.0% for-loop [46] 50.0% [80] 220(1.1%) 0(0.0%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 loop [71] 50.0% update-en-expr [96] 50.0% ---------------------------------------------------------------------- loop [71] 100.0% [81] 218(1.1%) 0(0.0%) foldl ...et/collects/racket/private/list.rkt:229:4 merge2 [89] 100.0% ---------------------------------------------------------------------- loop [71] 100.0% [82] 202(1.0%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:161:2 eval-const-expr [90] 100.0% ---------------------------------------------------------------------- ??? [75] 100.0% [83] 5816(29.2%) 0(0.0%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [95] 83.9% ...higher-order.rkt:373:33 [93] 8.2% bf* [94] 7.9% ---------------------------------------------------------------------- ??? [75] 100.0% [84] 1956(9.8%) 1244(6.3%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [101] 36.4% ---------------------------------------------------------------------- hash-update! [77] 100.0% [85] 864(4.3%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [91] 100.0% ---------------------------------------------------------------------- hash-ref! [76] 100.0% [86] 642(3.2%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [76] 100.0% ---------------------------------------------------------------------- hash-ref! [76] 100.0% [87] 520(2.6%) 0(0.0%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:165:0 sig+exp->bigfloat [92] 100.0% ---------------------------------------------------------------------- ->flonum [78] 100.0% [88] 490(2.5%) 0(0.0%) ??? ...-racket/utils/simple-result-arrow.rkt:47:15 ??? [101] 100.0% ---------------------------------------------------------------------- foldl [81] 100.0% [89] 218(1.1%) 218(1.1%) merge2 ...ztatlock/herbie/src/core/ematch.rkt:31:0 ---------------------------------------------------------------------- for-loop [82] 100.0% [90] 202(1.0%) 202(1.0%) eval-const-expr ...k/herbie/src/programs.rkt:180:0 ---------------------------------------------------------------------- ??? [85] 100.0% [91] 864(4.3%) 642(3.2%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 update-en-expr [96] 25.7% ---------------------------------------------------------------------- bigfloat-hash [87] 100.0% [92] 520(2.6%) 520(2.6%) sig+exp->bigfloat ...ivate/bigfloat/mpfr.rkt:385:0 ---------------------------------------------------------------------- ??? [83] 100.0% [93] 476(2.4%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [99] 50.4% ??? [97] 49.6% ---------------------------------------------------------------------- ??? [83] 100.0% [94] 458(2.3%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [95] 100.0% ---------------------------------------------------------------------- bf* [94] 8.6% ??? [83] 91.4% [95] 5340(26.8%) 1698(8.5%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfexpt [98] 50.6% ??? [102] 13.2% bfsqr [100] 4.3% ---------------------------------------------------------------------- loop! [80] 49.8% for-loop [91] 50.2% [96] 442(2.2%) 442(2.2%) update-en-expr ...herbie/src/core/egraph.rkt:211:0 ---------------------------------------------------------------------- ...higher-order.rkt:373:33 [93]100.0% [97] 236(1.2%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [99] 100.0% ---------------------------------------------------------------------- ??? [95] 100.0% [98] 2704(13.6%) 1784(9.0%) bfexpt ...lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [101] 34.0% ---------------------------------------------------------------------- ??? [97] 49.6% ...higher-order.rkt:373:33 [93] 50.4% [99] 476(2.4%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [102] 100.0% ---------------------------------------------------------------------- ??? [95] 100.0% [100] 232(1.2%) 0(0.0%) bfsqr ...-lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [101] 100.0% ---------------------------------------------------------------------- bfsqr [100] 9.9% ??? [88] 20.8% real->bigfloat [84] 30.2% bfexpt [98] 39.1% [101] 2354(11.8%) 2354(11.8%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ---------------------------------------------------------------------- ??? [99] 40.3% ??? [95] 59.7% [102] 1182(5.9%) 472(2.4%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [103] 39.8% ??? [104] 20.3% ---------------------------------------------------------------------- ??? [102] 100.0% [103] 470(2.4%) 470(2.4%) ??? ...llects/racket/contract/combinator.rkt:178:4 ---------------------------------------------------------------------- ??? [102] 100.0% [104] 240(1.2%) 240(1.2%) ??? ...ects/racket/contract/private/prop.rkt:489:4 ----------------------------------------------------------------------