Profiling results ----------------- Total cpu time observed: 15602ms (out of 15880ms) Number of samples taken: 73 (once every 214ms) (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 ======================================================================== ??? [16] 100.0% [1] 15200(97.4%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [9] 100.0% ------------------------------------------------------------------------ ??? [16] 100.0% [2] 2452(15.7%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [10] 66.5% iterate-egraph!5 [17] 24.6% for-loop [15] 9.0% ------------------------------------------------------------------------ hash-ref! [53] 100.0% [3] 1532(9.8%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [11] 100.0% ------------------------------------------------------------------------ loop [66] 100.0% [4] 1400(9.0%) 0(0.0%) completely-simplify-alt ...erbie/src/glue.rkt:87:0 simplify-expr [10] 100.0% ------------------------------------------------------------------------ hash-ref! [53] 100.0% [5] 1310(8.4%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:338:33 for-loop [12] 100.0% ------------------------------------------------------------------------ loop [66] 100.0% [6] 1116(7.2%) 0(0.0%) ??? ...ket/collects/racket/private/list.rkt:323:18 hash-ref! [53] 80.5% map [59] 19.5% ------------------------------------------------------------------------ hash-ref! [53] 100.0% [7] 1088(7.0%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [13] 100.0% ------------------------------------------------------------------------ f6 [57] 34.6% hash-ref! [53] 65.4% [8] 642(4.1%) 0(0.0%) taylor-quotient ...erbie/src/core/taylor.rkt:328:0 first-nonzero-exp [14] 100.0% ------------------------------------------------------------------------ profile-thunk14 [1] 100.0% [9] 15200(97.4%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [16] 100.0% ------------------------------------------------------------------------ completely-simplify-alt [4] 46.2% simplify [2] 53.8% [10] 3030(19.4%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [17] 100.0% ------------------------------------------------------------------------ ??? [3] 100.0% [11] 1532(9.8%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [53] 69.8% ??? [18] 30.2% ------------------------------------------------------------------------ ??? [5] 100.0% [12] 1310(8.4%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:341:46 hash-ref! [53] 100.0% ------------------------------------------------------------------------ ??? [7] 100.0% [13] 1088(7.0%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [53] 100.0% ------------------------------------------------------------------------ taylor-quotient [8] 100.0% [14] 642(4.1%) 0(0.0%) first-nonzero-exp ...bie/src/core/taylor.rkt:260:0 hash-ref! [53] 100.0% ------------------------------------------------------------------------ simplify [2] 100.0% [15] 220(1.4%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [17] 100.0% ------------------------------------------------------------------------ for-loop [42] 5.2% run [9] 46.1% [16] 15602(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 46.1% run-improve58 [19] 29.2% loop [20] 19.4% simplify [2] 5.2% ------------------------------------------------------------------------ for-loop [15] 5.7% simplify [2] 15.6% simplify-expr [10] 78.7% [17] 3852(24.7%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [21] 100.0% ------------------------------------------------------------------------ for-loop [11] 100.0% [18] 462(3.0%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:288:19 hash-ref! [53] 100.0% ------------------------------------------------------------------------ ??? [16] 100.0% [19] 9536(61.1%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 finalize-table! [22] 53.9% for-loop [23] 46.1% ------------------------------------------------------------------------ ??? [16] 100.0% [20] 6066(38.9%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [28] 58.9% loop [25] 41.1% ------------------------------------------------------------------------ iterate-egraph!5 [17] 100.0% [21] 3852(24.7%) 402(2.6%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [24] 68.2% loop [26] 15.6% apply-match [32] 5.7% ------------------------------------------------------------------------ run-improve58 [19] 100.0% [22] 5140(32.9%) 0(0.0%) finalize-table! ...k/herbie/src/mainloop.rkt:264:0 post-process [27] 100.0% ------------------------------------------------------------------------ run-improve58 [19] 100.0% [23] 4396(28.2%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [29] 100.0% ------------------------------------------------------------------------ for-loop [24] 50.0% one-iter [21] 50.0% [24] 2628(16.8%) 1406(9.0%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [24] 50.0% match-e [31] 23.2% ------------------------------------------------------------------------ loop [20] 100.0% [25] 2494(16.0%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [30] 64.2% make-exacts* [28] 35.8% ------------------------------------------------------------------------ one-iter [21] 100.0% [26] 602(3.9%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [32] 100.0% ------------------------------------------------------------------------ finalize-table! [22] 100.0% [27] 5140(32.9%) 0(0.0%) post-process .../ztatlock/herbie/src/glue.rkt:95:0 for-loop [33] 52.5% loop [66] 31.5% ??? [60] 11.7% localize-error [35] 4.3% ------------------------------------------------------------------------ loop [25] 20.0% loop [20] 80.0% [28] 4466(28.6%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [59] 50.6% loop [66] 49.4% ------------------------------------------------------------------------ for-loop [23] 100.0% [29] 4396(28.2%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [34] 55.8% localize-error [35] 15.3% gen-series! [36] 15.1% finalize-iter! [37] 13.8% ------------------------------------------------------------------------ loop [25] 100.0% [30] 1600(10.3%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [59] 100.0% ------------------------------------------------------------------------ for-loop [24] 100.0% [31] 1222(7.8%) 600(3.8%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [39] 34.4% constant? [40] 16.5% ------------------------------------------------------------------------ one-iter [21] 26.8% loop [26] 73.2% [32] 822(5.3%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 for-loop [38] 51.3% loop! [72] 48.7% ------------------------------------------------------------------------ post-process [27] 100.0% [33] 2696(17.3%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:119:17 append-map [41] 100.0% ------------------------------------------------------------------------ run-iter! [29] 100.0% [34] 2452(15.7%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [42] 100.0% ------------------------------------------------------------------------ loop [66] 19.7% post-process [27] 19.9% run-iter! [29] 60.4% [35] 1116(7.2%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [53] 100.0% ------------------------------------------------------------------------ run-iter! [29] 100.0% [36] 664(4.3%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [43] 100.0% ------------------------------------------------------------------------ run-iter! [29] 100.0% [37] 606(3.9%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [60] 100.0% ------------------------------------------------------------------------ apply-match [32] 100.0% [38] 422(2.7%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 mk-enode! [44] 52.1% loop! [72] 47.9% ------------------------------------------------------------------------ match-e [31] 100.0% [39] 420(2.7%) 220(1.4%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 curried [45] 47.6% ------------------------------------------------------------------------ match-e [31] 100.0% [40] 202(1.3%) 202(1.3%) constant? ...ck/herbie/src/syntax/syntax.rkt:221:0 ------------------------------------------------------------------------ f6 [57] 4.9% for-loop [33] 95.1% [41] 2696(17.3%) 200(1.3%) append-map ...acket/collects/racket/list.rkt:565:2 taylor-alt [46] 71.2% loop [66] 23.8% f6 [57] 2.5% ------------------------------------------------------------------------ simplify! [34] 100.0% [42] 2452(15.7%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [16] 100.0% ------------------------------------------------------------------------ gen-series! [36] 100.0% [43] 664(4.3%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [46] 100.0% ------------------------------------------------------------------------ for-loop [38] 100.0% [44] 220(1.4%) 0(0.0%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 new-enode [47] 100.0% ------------------------------------------------------------------------ for-loop [39] 100.0% [45] 200(1.3%) 200(1.3%) curried ...cket/collects/racket/function.rkt:71:18 ------------------------------------------------------------------------ loop [66] 19.1% for-loop [43] 19.8% append-map [41] 61.1% [46] 3360(21.5%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [48] 100.0% ------------------------------------------------------------------------ mk-enode! [44] 100.0% [47] 220(1.4%) 0(0.0%) new-enode ...atlock/herbie/src/core/enode.rkt:68:0 mutable-set [49] 100.0% ------------------------------------------------------------------------ taylor-alt [46] 100.0% [48] 3360(21.5%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [50] 100.0% ------------------------------------------------------------------------ new-enode [47] 100.0% [49] 220(1.4%) 220(1.4%) mutable-set ...racket/private/set-types.rkt:1000:0 ------------------------------------------------------------------------ location-do [50] 41.0% for-loop [48] 59.0% [50] 3360(21.5%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [51] 56.0% location-do [50] 41.0% simplify [56] 3.0% ------------------------------------------------------------------------ location-do [50] 100.0% [51] 3158(20.2%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [52] 80.2% f6 [57] 19.8% ------------------------------------------------------------------------ approximate9 [51] 100.0% [52] 2532(16.2%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [53] 100.0% ------------------------------------------------------------------------ ??? [18] 3.8% for-loop [11] 4.2% for-loop [13] 5.8% first-nonzero-exp [14] 6.0% for-loop [12] 7.6% ??? [55] 11.1% ??? [54] 13.1% localize-error [35] 13.8% ??? [6] 15.0% loop [52] 19.5% [53] 3870(24.8%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 parse-loop12 [63] 23.5% simplify [56] 17.2% ??? [55] 16.3% ??? [54] 13.1% ??? [3] 8.0% ??? [5] 7.6% ??? [7] 5.8% f6 [57] 5.4% taylor-quotient [8] 3.1% ------------------------------------------------------------------------ hash-ref! [53] 100.0% [54] 2132(13.7%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:63:15 hash-ref! [53] 100.0% ------------------------------------------------------------------------ hash-ref! [53] 100.0% [55] 2112(13.5%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [53] 90.5% simplify [56] 9.5% ------------------------------------------------------------------------ ??? [55] 6.8% location-do [50] 6.8% hash-ref! [53] 86.4% [56] 2956(18.9%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 f6 [57] 64.5% parse-loop12 [63] 28.7% debug7 [58] 6.8% ------------------------------------------------------------------------ append-map [41] 1.7% parse-loop12 [63] 2.2% f6 [57] 8.2% approximate9 [51] 8.2% map [59] 12.7% hash-ref! [53] 22.7% simplify [56] 42.6% [57] 2988(19.2%) 402(2.6%) f6 ...et/collects/racket/match/compiler.rkt:499:40 map [59] 64.8% f6 [57] 8.2% compose [62] 6.7% gather-multiplicative-terms [61] 3.7% append-map [41] 3.3% taylor-quotient [8] 1.5% ------------------------------------------------------------------------ simplify [56] 100.0% [58] 202(1.3%) 0(0.0%) debug7 /home/ztatlock/herbie/src/debug.rkt:102:0 ??? [60] 100.0% ------------------------------------------------------------------------ ??? [6] 3.4% loop [30] 24.8% make-exacts* [28] 35.0% f6 [57] 36.9% [59] 6464(41.4%) 202(1.3%) map ...acket/collects/racket/private/map.rkt:21:13 loop [66] 70.2% parse-loop12 [63] 12.1% f6 [57] 10.8% ->flonum [87] 3.4% ??? [65] 0.4% ------------------------------------------------------------------------ debug7 [58] 14.3% post-process [27] 42.7% finalize-iter! [37] 43.0% [60] 1410(9.0%) 202(1.3%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [64] 85.7% ------------------------------------------------------------------------ f6 [57] 100.0% [61] 422(2.7%) 422(2.7%) gather-multiplicative-terms ...re/reduce.rkt:107:0 ------------------------------------------------------------------------ f6 [57] 100.0% [62] 200(1.3%) 200(1.3%) compose ...collects/racket/private/list.rkt:385:12 ------------------------------------------------------------------------ parse-loop12 [63] 3.5% loop [66] 9.1% simplify [56] 17.1% map [59] 31.0% hash-ref! [53] 39.2% [63] 2846(18.2%) 1106(7.1%) parse-loop12 ...s/racket/match/compiler.rkt:410:15 loop [66] 48.3% parse-app [68] 7.8% f6 [57] 7.0% parse-loop12 [63] 3.5% make-multiplication-node [70] 3.5% ------------------------------------------------------------------------ ??? [60] 100.0% [64] 1208(7.7%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [67] 100.0% ------------------------------------------------------------------------ map [59] 100.0% [65] 202(1.3%) 0(0.0%) ??? /home/ztatlock/herbie/src/core/reduce.rkt:52:5 for-loop [69] 100.0% ------------------------------------------------------------------------ make-exacts* [28] 0.1% loop! [72] 0.8% post-process [27] 1.2% map [59] 4.0% parse-loop12 [63] 5.5% append-map [41] 5.5% loop [66] 82.9% [66] 9648(61.8%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [66] 82.9% taylor-alt [46] 5.5% parse-loop12 [63] 3.5% ??? [82] 3.4% ??? [6] 2.0% completely-simplify-alt [4] 1.2% loop! [72] 0.8% ??? [93] 0.8% localize-error [35] 0.0% ------------------------------------------------------------------------ for-loop [64] 100.0% [67] 1208(7.7%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [71] 100.0% ------------------------------------------------------------------------ parse-loop12 [63] 100.0% [68] 222(1.4%) 222(1.4%) parse-app .../collects/racket/private/kw.rkt:903:2 ------------------------------------------------------------------------ ??? [65] 100.0% [69] 202(1.3%) 0(0.0%) for-loop ...atlock/herbie/src/core/reduce.rkt:53:7 pattern-match [73] 100.0% ------------------------------------------------------------------------ parse-loop12 [63] 100.0% [70] 202(1.3%) 0(0.0%) make-multiplication-node .../core/reduce.rkt:221:0 make-multiplication-subnode [74]100.0% ------------------------------------------------------------------------ atab-add-altn [67] 100.0% [71] 1208(7.7%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [75] 66.6% for-loop [76] 33.4% ------------------------------------------------------------------------ for-loop [38] 16.8% loop [66] 33.4% apply-match [32] 49.8% [72] 602(3.9%) 200(1.3%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 loop [66] 33.4% custom-set-union [77] 16.8% update-en-expr [79] 16.6% ------------------------------------------------------------------------ for-loop [69] 100.0% [73] 202(1.3%) 202(1.3%) pattern-match .../herbie/src/core/matcher.rkt:47:0 ------------------------------------------------------------------------ make-multiplication-node [70] 100.0% [74] 202(1.3%) 0(0.0%) make-multiplication-subnode ...re/reduce.rkt:231:0 group-by68 [78] 100.0% ------------------------------------------------------------------------ best-and-tied-at-points [71] 100.0% [75] 804(5.2%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [80] 74.9% eval-prog [81] 25.1% ------------------------------------------------------------------------ best-and-tied-at-points [71] 100.0% [76] 404(2.6%) 404(2.6%) for-loop ...k/herbie/src/core/alt-table.rkt:124:16 ------------------------------------------------------------------------ loop! [72] 100.0% [77] 202(1.3%) 202(1.3%) custom-set-union ...et/private/set-types.rkt:168:0 ------------------------------------------------------------------------ make-multiplication-subnode [74]100.0% [78] 202(1.3%) 202(1.3%) group-by68 ...acket/collects/racket/list.rkt:749:0 ------------------------------------------------------------------------ loop! [72] 100.0% [79] 200(1.3%) 200(1.3%) update-en-expr ...herbie/src/core/egraph.rkt:211:0 ------------------------------------------------------------------------ errors [75] 100.0% [80] 602(3.9%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [82] 66.8% ??? [84] 33.2% ------------------------------------------------------------------------ errors [75] 100.0% [81] 202(1.3%) 0(0.0%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 parse-lambda [83] 100.0% ------------------------------------------------------------------------ for-loop [80] 6.2% loop [66] 93.8% [82] 6468(41.5%) 530(3.4%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [85] 58.0% real->bigfloat [86] 19.3% ??? [96] 8.0% ...e/case-arrow.rkt:150:50 [88] 3.3% ->flonum [87] 3.1% ------------------------------------------------------------------------ eval-prog [81] 100.0% [83] 202(1.3%) 0(0.0%) parse-lambda ...llects/racket/private/kw.rkt:393:2 loop [89] 100.0% ------------------------------------------------------------------------ for-loop [80] 100.0% [84] 200(1.3%) 200(1.3%) ??? ...ket/collects/racket/private/for.rkt:1150:14 ------------------------------------------------------------------------ ??? [82] 100.0% [85] 3754(24.1%) 622(4.0%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [93] 70.6% bf* [90] 6.5% ...higher-order.rkt:373:33 [91] 6.3% ------------------------------------------------------------------------ ??? [82] 100.0% [86] 1246(8.0%) 1028(6.6%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [99] 17.5% ------------------------------------------------------------------------ ??? [82] 48.1% map [59] 51.9% [87] 420(2.7%) 218(1.4%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [92] 48.1% ------------------------------------------------------------------------ ??? [82] 100.0% [88] 216(1.4%) 216(1.4%) ...e/case-arrow.rkt:150:50 (unknown source) ------------------------------------------------------------------------ parse-lambda [83] 100.0% [89] 202(1.3%) 202(1.3%) loop .../collects/racket/private/stxcase.rkt:112:7 ------------------------------------------------------------------------ ??? [85] 100.0% [90] 244(1.6%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [93] 100.0% ------------------------------------------------------------------------ ??? [85] 100.0% [91] 236(1.5%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [94] 100.0% ------------------------------------------------------------------------ ->flonum [87] 100.0% [92] 202(1.3%) 202(1.3%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ------------------------------------------------------------------------ bf* [90] 6.4% loop [66] 23.7% ??? [85] 69.9% [93] 3794(24.3%) 1596(10.2%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfmul [95] 41.4% ??? [98] 10.8% bftan [97] 5.7% ------------------------------------------------------------------------ ...higher-order.rkt:373:33 [91] 100.0% [94] 236(1.5%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [96] 100.0% ------------------------------------------------------------------------ ??? [93] 100.0% [95] 1570(10.1%) 1084(6.9%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [99] 31.0% ------------------------------------------------------------------------ ??? [94] 31.2% ??? [82] 68.8% [96] 756(4.8%) 236(1.5%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [98] 68.8% ------------------------------------------------------------------------ ??? [93] 100.0% [97] 218(1.4%) 0(0.0%) bftan ...-lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [99] 100.0% ------------------------------------------------------------------------ ??? [93] 44.1% ??? [96] 55.9% [98] 930(6.0%) 190(1.2%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [100] 79.6% ------------------------------------------------------------------------ bftan [97] 23.6% real->bigfloat [86] 23.6% bfmul [95] 52.7% [99] 922(5.9%) 922(5.9%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ------------------------------------------------------------------------ ??? [98] 100.0% [100] 740(4.7%) 438(2.8%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [101] 40.8% ------------------------------------------------------------------------ ??? [100] 100.0% [101] 302(1.9%) 302(1.9%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 ------------------------------------------------------------------------