Profiling results ----------------- Total cpu time observed: 18896ms (out of 19228ms) Number of samples taken: 92 (once every 205ms) ==================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ==================================================================== ??? [14] 100.0% [1] 18526(98.0%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [9] 100.0% -------------------------------------------------------------------- post-process [29] 10.5% loop [81] 89.5% [2] 1692(9.0%) 0(0.0%) completely-simplify-alt ...erbie/src/glue.rkt:87:0 simplify-expr [10] 100.0% -------------------------------------------------------------------- loop [81] 13.8% ??? [14] 86.2% [3] 1190(6.3%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [10] 72.8% iterate-egraph!5 [15] 27.2% -------------------------------------------------------------------- hash-ref! [67] 100.0% [4] 514(2.7%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:322:33 for-loop [11] 100.0% -------------------------------------------------------------------- hash-ref! [67] 100.0% [5] 302(1.6%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:338:33 for-loop [13] 50.3% hash-ref! [67] 49.7% -------------------------------------------------------------------- hash-ref! [67] 100.0% [6] 164(0.9%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:392:23 for-loop [12] 100.0% -------------------------------------------------------------------- loop [81] 100.0% [7] 152(0.8%) 0(0.0%) ??? ...ket/collects/racket/private/list.rkt:323:18 hash-ref! [67] 100.0% -------------------------------------------------------------------- f16 [76] 100.0% [8] 146(0.8%) 0(0.0%) taylor-sqrt ...ck/herbie/src/core/taylor.rkt:346:0 hash-ref! [67] 100.0% -------------------------------------------------------------------- profile-thunk14 [1] 98.8% [9] 18746(99.2%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [14] 100.0% -------------------------------------------------------------------- simplify [3] 33.9% completely-simplify-alt [2] 66.1% [10] 2558(13.5%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [15] 100.0% -------------------------------------------------------------------- ??? [4] 100.0% [11] 514(2.7%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:324:46 hash-ref! [67] 100.0% -------------------------------------------------------------------- ??? [6] 100.0% [12] 164(0.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:396:33 for-loop [16] 100.0% -------------------------------------------------------------------- ??? [5] 100.0% [13] 152(0.8%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:341:46 hash-ref! [67] 100.0% -------------------------------------------------------------------- for-loop [50] 1.8% run [9] 49.3% [14] 18896(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 48.1% loop [20] 30.7% run-improve58 [17] 19.4% simplify [3] 1.8% -------------------------------------------------------------------- simplify [3] 11.2% simplify-expr [10] 88.8% [15] 2882(15.3%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [18] 94.6% *simplify-rules* [19] 5.4% -------------------------------------------------------------------- for-loop [12] 100.0% [16] 164(0.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:398:39 hash-ref! [67] 100.0% -------------------------------------------------------------------- ??? [14] 100.0% [17] 7518(39.8%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 finalize-table! [21] 60.4% for-loop [23] 23.4% loop [20] 12.0% get-final-combination [25] 2.2% setup-prog [27] 2.0% -------------------------------------------------------------------- iterate-egraph!5 [15] 100.0% [18] 2726(14.4%) 166(0.9%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [22] 81.1% loop [24] 6.7% apply-match [32] 6.1% -------------------------------------------------------------------- iterate-egraph!5 [15] 100.0% [19] 156(0.8%) 0(0.0%) *simplify-rules* ...bie/src/syntax/rules.rkt:300:0 for-loop [26] 100.0% -------------------------------------------------------------------- run-improve58 [17] 7.3% ??? [14] 92.7% [20] 12280(65.0%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [35] 39.8% loop [28] 39.5% loop [36] 18.9% for-loop [33] 1.8% -------------------------------------------------------------------- run-improve58 [17] 100.0% [21] 4544(24.0%) 0(0.0%) finalize-table! ...k/herbie/src/mainloop.rkt:264:0 post-process [29] 100.0% -------------------------------------------------------------------- for-loop [22] 46.2% one-iter [18] 53.8% [22] 2210(11.7%) 670(3.5%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [22] 46.2% match-e [31] 34.8% -------------------------------------------------------------------- run-improve58 [17] 100.0% [23] 1756(9.3%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [30] 100.0% -------------------------------------------------------------------- one-iter [18] 100.0% [24] 184(1.0%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [32] 100.0% -------------------------------------------------------------------- run-improve58 [17] 100.0% [25] 164(0.9%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 extract-alt [34] 100.0% -------------------------------------------------------------------- *simplify-rules* [19] 100.0% [26] 156(0.8%) 156(0.8%) for-loop ...e/ztatlock/herbie/src/common.rkt:205:9 -------------------------------------------------------------------- run-improve58 [17] 100.0% [27] 152(0.8%) 0(0.0%) setup-prog /home/ztatlock/herbie/src/glue.rkt:46:0 ??? [49] 100.0% -------------------------------------------------------------------- loop [20] 100.0% [28] 4848(25.7%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [36] 63.9% make-exacts* [35] 29.1% eval-prog [42] 7.0% -------------------------------------------------------------------- finalize-table! [21] 100.0% [29] 4544(24.0%) 0(0.0%) post-process .../ztatlock/herbie/src/glue.rkt:95:0 for-loop [37] 44.1% loop [81] 36.7% ??? [49] 12.1% completely-simplify-alt [2] 3.9% localize-error [43] 3.3% -------------------------------------------------------------------- for-loop [23] 100.0% [30] 1756(9.3%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [38] 58.4% gen-series! [39] 22.0% finalize-iter! [41] 19.6% -------------------------------------------------------------------- for-loop [40] 11.3% for-loop [22] 88.7% [31] 1540(8.1%) 1372(7.3%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [40] 11.3% for-loop [46] 10.9% -------------------------------------------------------------------- one-iter [18] 47.4% loop [24] 52.6% [32] 350(1.9%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 for-loop [45] 52.6% merge-egraph-nodes! [47] 47.4% -------------------------------------------------------------------- loop [20] 100.0% [33] 220(1.2%) 0(0.0%) for-loop .../ztatlock/herbie/src/points.rkt:128:18 for-loop [44] 100.0% -------------------------------------------------------------------- get-final-combination [25] 100.0% [34] 164(0.9%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [81] 100.0% -------------------------------------------------------------------- loop [28] 22.4% loop [20] 77.6% [35] 6302(33.4%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [78] 60.5% loop [81] 39.5% -------------------------------------------------------------------- loop [20] 42.9% loop [28] 57.1% [36] 5418(28.7%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [78] 100.0% -------------------------------------------------------------------- post-process [29] 100.0% [37] 2002(10.6%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:119:17 append-map [48] 100.0% -------------------------------------------------------------------- run-iter! [30] 100.0% [38] 1026(5.4%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [50] 100.0% -------------------------------------------------------------------- run-iter! [30] 100.0% [39] 386(2.0%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [51] 100.0% -------------------------------------------------------------------- match-e [31] 100.0% [40] 348(1.8%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [31] 100.0% -------------------------------------------------------------------- run-iter! [30] 100.0% [41] 344(1.8%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [49] 100.0% -------------------------------------------------------------------- loop [28] 100.0% [42] 340(1.8%) 340(1.8%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 -------------------------------------------------------------------- post-process [29] 49.7% loop [81] 50.3% [43] 302(1.6%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [67] 100.0% -------------------------------------------------------------------- for-loop [33] 100.0% [44] 220(1.2%) 220(1.2%) for-loop .../ztatlock/herbie/src/points.rkt:129:20 -------------------------------------------------------------------- apply-match [32] 100.0% [45] 184(1.0%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 loop! [85] 100.0% -------------------------------------------------------------------- match-e [31] 100.0% [46] 168(0.9%) 168(0.9%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 -------------------------------------------------------------------- merge-egraph-nodes! [47] 50.0% apply-match [32] 50.0% [47] 166(0.9%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 merge-egraph-nodes! [47] 50.0% loop! [85] 50.0% -------------------------------------------------------------------- for-loop [37] 100.0% [48] 2002(10.6%) 0(0.0%) append-map ...acket/collects/racket/list.rkt:565:2 taylor-alt [52] 84.2% loop [81] 15.8% -------------------------------------------------------------------- setup-prog [27] 14.6% finalize-iter! [41] 33.0% post-process [29] 52.5% [49] 1044(5.5%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [53] 85.4% make-alt-table [54] 14.6% -------------------------------------------------------------------- simplify! [38] 100.0% [50] 1026(5.4%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [14] 100.0% -------------------------------------------------------------------- gen-series! [39] 100.0% [51] 386(2.0%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [52] 100.0% -------------------------------------------------------------------- loop [81] 13.2% for-loop [51] 16.2% append-map [48] 70.6% [52] 2388(12.6%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [55] 100.0% -------------------------------------------------------------------- ??? [49] 100.0% [53] 892(4.7%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [56] 100.0% -------------------------------------------------------------------- ??? [49] 100.0% [54] 152(0.8%) 0(0.0%) make-alt-table ...rbie/src/core/alt-table.rkt:32:0 errors [60] 100.0% -------------------------------------------------------------------- taylor-alt [52] 100.0% [55] 2388(12.6%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [57] 100.0% -------------------------------------------------------------------- for-loop [53] 100.0% [56] 892(4.7%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [58]100.0% -------------------------------------------------------------------- location-do [57] 44.7% for-loop [55] 55.3% [57] 2388(12.6%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [59] 52.2% location-do [57] 44.7% simplify [70] 3.0% -------------------------------------------------------------------- atab-add-altn [56] 100.0% [58] 892(4.7%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [60] 79.1% for-loop [61] 20.9% -------------------------------------------------------------------- location-do [57] 100.0% [59] 2244(11.9%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [62] 72.6% taylor [64] 7.4% taylor-quotient [65] 6.8% taylor-invert [66] 6.7% f16 [76] 6.5% -------------------------------------------------------------------- make-alt-table [54] 17.7% best-and-tied-at-points [58] 82.3% [60] 858(4.5%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [63] 100.0% -------------------------------------------------------------------- best-and-tied-at-points [58]100.0% [61] 186(1.0%) 186(1.0%) for-loop ...k/herbie/src/core/alt-table.rkt:124:16 -------------------------------------------------------------------- approximate9 [59] 100.0% [62] 1630(8.6%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [67] 100.0% -------------------------------------------------------------------- errors [60] 100.0% [63] 858(4.5%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [83] 59.9% ??? [69] 22.4% ->flonum [84] 17.7% -------------------------------------------------------------------- approximate9 [59] 100.0% [64] 166(0.9%) 0(0.0%) taylor ...tatlock/herbie/src/core/taylor.rkt:157:0 debug-print [75] 100.0% -------------------------------------------------------------------- approximate9 [59] 100.0% [65] 152(0.8%) 0(0.0%) taylor-quotient ...erbie/src/core/taylor.rkt:328:0 first-nonzero-exp [68] 100.0% -------------------------------------------------------------------- approximate9 [59] 100.0% [66] 150(0.8%) 0(0.0%) taylor-invert .../herbie/src/core/taylor.rkt:312:0 first-nonzero-exp [68] 100.0% -------------------------------------------------------------------- ??? [5] 1.4% for-loop [13] 1.5% for-loop [16] 2.6% ??? [7] 3.7% ??? [73] 4.8% taylor-sqrt [8] 7.0% for-loop [11] 8.2% localize-error [43] 10.9% ??? [72] 10.9% ??? [71] 23.2% loop [62] 25.7% [67] 2078(11.0%) 158(0.8%) hash-ref! ...racket/private/more-scheme.rkt:373:13 simplify [70] 30.2% ??? [71] 23.2% ??? [72] 10.9% ??? [4] 8.2% parse-loop50 [74] 7.3% f16 [76] 7.2% ??? [73] 4.8% ??? [5] 2.9% ??? [6] 2.6% -------------------------------------------------------------------- taylor-invert [66] 49.7% taylor-quotient [65] 50.3% [68] 302(1.6%) 0(0.0%) first-nonzero-exp ...bie/src/core/taylor.rkt:260:0 simplify [70] 100.0% -------------------------------------------------------------------- for-loop [63] 100.0% [69] 192(1.0%) 192(1.0%) ??? ...ket/collects/racket/private/for.rkt:1150:14 -------------------------------------------------------------------- location-do [57] 7.0% first-nonzero-exp [68] 14.6% hash-ref! [67] 78.4% [70] 2064(10.9%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 f16 [76] 53.2% parse-loop50 [74] 39.4% debug-print [75] 7.4% -------------------------------------------------------------------- hash-ref! [67] 100.0% [71] 1472(7.8%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [67] 100.0% -------------------------------------------------------------------- hash-ref! [67] 100.0% [72] 460(2.4%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:63:15 hash-ref! [67] 100.0% -------------------------------------------------------------------- hash-ref! [67] 100.0% [73] 300(1.6%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:357:30 hash-ref! [67] 100.0% -------------------------------------------------------------------- loop [81] 2.2% hash-ref! [67] 13.6% map [78] 18.3% parse-loop50 [74] 27.7% simplify [70] 38.1% [74] 1116(5.9%) 792(4.2%) parse-loop50 ...s/racket/match/compiler.rkt:410:15 parse-loop50 [74] 27.7% loop [81] 15.9% f16 [76] 15.4% map [78] 4.9% -------------------------------------------------------------------- simplify [70] 47.8% taylor [64] 52.2% [75] 318(1.7%) 0(0.0%) debug-print ...ztatlock/herbie/src/debug.rkt:107:0 for-loop [77] 100.0% -------------------------------------------------------------------- f16 [76] 1.5% approximate9 [59] 1.5% hash-ref! [67] 10.6% parse-loop50 [74] 12.1% simplify [70] 16.5% map [78] 57.9% [76] 1420(7.5%) 482(2.6%) f16 ...t/collects/racket/match/compiler.rkt:499:40 map [78] 76.0% parse-app [79] 3.5% combine-mterms [80] 2.0% f16 [76] 1.5% taylor-sqrt [8] 1.5% -------------------------------------------------------------------- debug-print [75] 100.0% [77] 318(1.7%) 318(1.7%) for-loop /home/ztatlock/herbie/src/debug.rkt:113:2 -------------------------------------------------------------------- parse-loop50 [74] 2.8% f16 [76] 11.6% make-exacts* [35] 35.4% loop [36] 50.3% [78] 10778(57.0%) 152(0.8%) map ...acket/collects/racket/private/map.rkt:21:13 loop [81] 79.8% f16 [76] 9.2% ??? [83] 7.2% parse-loop50 [74] 3.1% ??? [82] 0.3% -------------------------------------------------------------------- f16 [76] 100.0% [79] 150(0.8%) 150(0.8%) parse-app .../collects/racket/private/kw.rkt:903:2 -------------------------------------------------------------------- f16 [76] 100.0% [80] 144(0.8%) 144(0.8%) combine-mterms ...herbie/src/core/reduce.rkt:182:0 -------------------------------------------------------------------- loop! [85] 0.2% extract-alt [34] 0.3% parse-loop50 [74] 0.7% post-process [29] 0.7% make-exacts* [35] 1.7% map [78] 2.2% append-map [48] 2.3% loop [81] 92.0% [81] 13552(71.7%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [81] 92.0% ??? [83] 3.7% taylor-alt [52] 2.3% completely-simplify-alt [2] 0.6% parse-loop50 [74] 0.6% simplify [3] 0.3% loop! [85] 0.2% ->flonum [84] 0.2% ??? [90] 0.1% localize-error [43] 0.0% ??? [7] 0.0% -------------------------------------------------------------------- map [78] 100.0% [82] 192(1.0%) 192(1.0%) ??? /home/ztatlock/herbie/src/core/reduce.rkt:52:5 -------------------------------------------------------------------- for-loop [63] 4.4% map [78] 6.6% loop [81] 89.0% [83] 11810(62.5%) 898(4.8%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [86] 47.2% real->bigfloat [87] 35.3% ??? [88] 9.9% -------------------------------------------------------------------- for-loop [63] 26.4% loop [81] 73.6% [84] 576(3.0%) 216(1.1%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [94] 36.1% ??? [91] 26.4% -------------------------------------------------------------------- loop [81] 23.7% merge-egraph-nodes! [47] 23.7% for-loop [45] 52.6% [85] 350(1.9%) 166(0.9%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 custom-set-union [89] 52.6% loop [81] 23.7% -------------------------------------------------------------------- ??? [83] 100.0% [86] 5578(29.5%) 566(3.0%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [90] 83.0% bf/ [92] 3.7% ??? [91] 3.2% -------------------------------------------------------------------- ??? [83] 100.0% [87] 4164(22.0%) 3252(17.2%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [98] 21.9% -------------------------------------------------------------------- ??? [83] 100.0% [88] 1170(6.2%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [94] 100.0% -------------------------------------------------------------------- loop! [85] 100.0% [89] 184(1.0%) 0(0.0%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [93] 100.0% -------------------------------------------------------------------- loop [81] 6.1% ??? [86] 93.9% [90] 4930(26.1%) 1668(8.8%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfdiv [95] 32.7% bflog [96] 22.5% ??? [94] 11.0% -------------------------------------------------------------------- ->flonum [84] 45.8% ??? [86] 54.2% [91] 332(1.8%) 332(1.8%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 -------------------------------------------------------------------- ??? [86] 100.0% [92] 204(1.1%) 204(1.1%) bf/ ...th/private/bigfloat/bigfloat-mpfr.rkt:102:0 -------------------------------------------------------------------- custom-set-union [89] 100.0% [93] 184(1.0%) 0(0.0%) for-loop ...cts/racket/private/set-types.rkt:174:3 for-loop [97] 100.0% -------------------------------------------------------------------- ->flonum [84] 10.8% ??? [90] 28.2% ??? [88] 61.0% [94] 1918(10.2%) 190(1.0%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [99] 90.1% -------------------------------------------------------------------- ??? [90] 100.0% [95] 1614(8.5%) 1084(5.7%) bfdiv ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [98] 32.8% -------------------------------------------------------------------- ??? [90] 100.0% [96] 1108(5.9%) 456(2.4%) bflog ...-lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [98] 58.8% -------------------------------------------------------------------- for-loop [93] 100.0% [97] 184(1.0%) 184(1.0%) for-loop ...cts/racket/private/set-types.rkt:178:5 -------------------------------------------------------------------- bfdiv [95] 25.3% bflog [96] 31.1% real->bigfloat [87] 43.6% [98] 2094(11.1%) 2094(11.1%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 -------------------------------------------------------------------- ??? [94] 100.0% [99] 1728(9.1%) 748(4.0%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [100] 56.7% -------------------------------------------------------------------- ??? [99] 100.0% [100] 980(5.2%) 980(5.2%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 --------------------------------------------------------------------