Profiling results ----------------- Total cpu time observed: 9770ms (out of 9932ms) Number of samples taken: 57 (once every 171ms) ====================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ====================================================================== ??? [12] 100.0% [1] 9254(94.7%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [7] 100.0% ---------------------------------------------------------------------- simplify-alt [28] 4.3% loop [46] 4.5% ??? [12] 91.1% [2] 4064(41.6%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [8] 73.8% iterate-egraph!5 [13] 13.1% for-loop [9] 13.1% ---------------------------------------------------------------------- copying-mergesort [64] 100.0% [3] 824(8.4%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [83] 100.0% ---------------------------------------------------------------------- hash-ref! [91] 100.0% [4] 178(1.8%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [10] 100.0% ---------------------------------------------------------------------- hash-ref! [91] 100.0% [5] 178(1.8%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [11] 100.0% ---------------------------------------------------------------------- hash-ref! [91] 100.0% [6] 176(1.8%) 0(0.0%) ??? /home/ztatlock/herbie/src/programs.rkt:197:5 loop [46] 100.0% ---------------------------------------------------------------------- profile-thunk14 [1] 98.1% [7] 9438(96.6%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [12] 100.0% ---------------------------------------------------------------------- simplify [2] 100.0% [8] 2998(30.7%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [13] 100.0% ---------------------------------------------------------------------- simplify [2] 100.0% [9] 532(5.4%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [13] 100.0% ---------------------------------------------------------------------- ??? [4] 100.0% [10] 178(1.8%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [91] 100.0% ---------------------------------------------------------------------- ??? [5] 100.0% [11] 178(1.8%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [91] 100.0% ---------------------------------------------------------------------- for-loop [39] 12.6% run [7] 42.9% [12] 9770(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 41.0% run-improve58 [14] 32.6% loop [18] 13.7% simplify [2] 12.6% ---------------------------------------------------------------------- for-loop [9] 13.1% simplify [2] 13.1% simplify-expr [8] 73.8% [13] 4064(41.6%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [15] 86.7% map-enodes [16] 13.3% ---------------------------------------------------------------------- ??? [12] 100.0% [14] 7090(72.6%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [17] 59.9% get-final-combination [19] 31.4% loop [18] 6.2% setup-prog [22] 2.5% ---------------------------------------------------------------------- iterate-egraph!5 [13] 100.0% [15] 3522(36.0%) 184(1.9%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [20] 59.4% loop [21] 30.3% apply-match [26] 5.1% ---------------------------------------------------------------------- iterate-egraph!5 [13] 100.0% [16] 542(5.5%) 0(0.0%) map-enodes ...ock/herbie/src/core/egraph.rkt:139:0 loop [46] 100.0% ---------------------------------------------------------------------- run-improve58 [14] 100.0% [17] 4244(43.4%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [23] 100.0% ---------------------------------------------------------------------- run-improve58 [14] 14.2% ??? [12] 85.8% [18] 3122(32.0%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 loop [25] 57.9% make-exacts* [31] 34.5% loop [33] 7.6% ---------------------------------------------------------------------- run-improve58 [14] 100.0% [19] 2228(22.8%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [24] 91.7% extract-alt [27] 8.3% ---------------------------------------------------------------------- for-loop [20] 46.1% one-iter [15] 53.9% [20] 2092(21.4%) 684(7.0%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [20] 46.1% match-e [32] 33.7% ---------------------------------------------------------------------- one-iter [15] 100.0% [21] 1066(10.9%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [26] 100.0% ---------------------------------------------------------------------- run-improve58 [14] 100.0% [22] 176(1.8%) 0(0.0%) setup-prog /home/ztatlock/herbie/src/glue.rkt:46:0 simplify-alt [28] 100.0% ---------------------------------------------------------------------- for-loop [17] 100.0% [23] 4244(43.4%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [29] 91.5% finalize-iter! [34] 4.3% gen-series! [38] 4.2% ---------------------------------------------------------------------- get-final-combination [19] 100.0% [24] 2044(20.9%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [30] 100.0% ---------------------------------------------------------------------- loop [18] 100.0% [25] 1808(18.5%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [33] 39.6% make-exacts* [31] 39.3% eval-prog [88] 21.1% ---------------------------------------------------------------------- one-iter [15] 14.4% loop [21] 85.6% [26] 1246(12.8%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 update-leader! [43] 42.5% merge-egraph-nodes! [36] 14.4% for-loop [37] 14.4% substitute-e [35] 14.4% match-e [32] 14.1% ---------------------------------------------------------------------- get-final-combination [19] 100.0% [27] 184(1.9%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [46] 100.0% ---------------------------------------------------------------------- setup-prog [22] 100.0% [28] 176(1.8%) 0(0.0%) simplify-alt .../ztatlock/herbie/src/glue.rkt:84:0 simplify [2] 100.0% ---------------------------------------------------------------------- run-iter! [23] 100.0% [29] 3884(39.8%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [39] 100.0% ---------------------------------------------------------------------- split-table [24] 100.0% [30] 2044(20.9%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [40] 100.0% ---------------------------------------------------------------------- loop [25] 39.7% loop [18] 60.3% [31] 1788(18.3%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 loop [46] 62.9% map [41] 27.2% eval-prog [88] 10.0% ---------------------------------------------------------------------- for-loop [48] 10.6% apply-match [26] 11.1% for-loop [20] 78.3% [32] 1584(16.2%) 524(5.4%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [42] 60.5% for-loop [48] 11.6% ---------------------------------------------------------------------- loop [18] 24.8% loop [25] 75.2% [33] 952(9.7%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [41] 100.0% ---------------------------------------------------------------------- run-iter! [23] 100.0% [34] 182(1.9%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [44] 100.0% ---------------------------------------------------------------------- apply-match [26] 33.3% substitute-e [35] 66.7% [35] 180(1.8%) 180(1.8%) substitute-e ...ck/herbie/src/core/ematch.rkt:71:0 substitute-e [35] 66.7% ---------------------------------------------------------------------- apply-match [26] 100.0% [36] 180(1.8%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [43] 100.0% ---------------------------------------------------------------------- apply-match [26] 100.0% [37] 180(1.8%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 loop! [60] 100.0% ---------------------------------------------------------------------- run-iter! [23] 100.0% [38] 178(1.8%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [45] 100.0% ---------------------------------------------------------------------- simplify! [29] 100.0% [39] 3884(39.8%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [12] 95.4% debug-print [100] 4.6% ---------------------------------------------------------------------- infer-splitpoints4 [30] 100.0% [40] 2044(20.9%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [47] 82.4% pick-errors [50] 8.9% err-lsts->split-indices [52] 8.7% ---------------------------------------------------------------------- make-exacts* [31] 33.8% loop [33] 66.2% [41] 1438(14.7%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [46] 100.0% ---------------------------------------------------------------------- match-e [32] 100.0% [42] 1040(10.6%) 708(7.2%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [48] 40.2% ---------------------------------------------------------------------- merge-egraph-nodes! [36] 25.4% apply-match [26] 74.6% [43] 710(7.3%) 180(1.8%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [49] 74.6% ---------------------------------------------------------------------- finalize-iter! [34] 100.0% [44] 182(1.9%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [51] 100.0% ---------------------------------------------------------------------- gen-series! [38] 100.0% [45] 178(1.8%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [53] 100.0% ---------------------------------------------------------------------- make-exacts* [31] 0.1% loop! [60] 0.2% map [41] 1.1% ??? [6] 4.8% extract-alt [27] 5.0% map-enodes [16] 7.0% loop [46] 81.8% [46] 3644(37.3%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [46] 81.8% for-loop [56] 7.0% simplify [2] 5.0% hash-ref! [91] 4.8% ??? [54] 1.1% loop! [60] 0.2% ---------------------------------------------------------------------- option-on-expr [40] 100.0% [47] 1684(17.2%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [55] 100.0% ---------------------------------------------------------------------- match-e [32] 26.7% for-loop [42] 73.3% [48] 688(7.0%) 352(3.6%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [32] 48.8% ---------------------------------------------------------------------- update-leader! [43] 100.0% [49] 530(5.4%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [57] 100.0% ---------------------------------------------------------------------- option-on-expr [40] 100.0% [50] 182(1.9%) 0(0.0%) pick-errors ...k/herbie/src/core/regimes.rkt:173:0 for-loop [58] 100.0% ---------------------------------------------------------------------- ??? [44] 100.0% [51] 182(1.9%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [59] 100.0% ---------------------------------------------------------------------- option-on-expr [40] 100.0% [52] 178(1.8%) 0(0.0%) err-lsts->split-indices .../core/regimes.rkt:224:0 add-splitpoint [61] 100.0% ---------------------------------------------------------------------- for-loop [45] 100.0% [53] 178(1.8%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [62] 100.0% ---------------------------------------------------------------------- loop [46] 100.0% [54] 2562(26.2%) 112(1.1%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [63] 65.1% real->bigfloat [66] 17.6% ??? [90] 12.9% ---------------------------------------------------------------------- sort-context-on-expr [47] 100.0% [55] 1684(17.2%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [64] 78.7% loop [74] 21.3% ---------------------------------------------------------------------- loop [46] 100.0% [56] 542(5.5%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:161:2 eval-const-expr [67] 33.6% ->flonum [70] 33.2% setfindf [71] 33.2% ---------------------------------------------------------------------- for-loop [49] 100.0% [57] 530(5.4%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [65] 100.0% ---------------------------------------------------------------------- pick-errors [50] 100.0% [58] 182(1.9%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:176:4 eval-prog [88] 100.0% ---------------------------------------------------------------------- for-loop [51] 100.0% [59] 182(1.9%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [68] 100.0% ---------------------------------------------------------------------- loop [46] 50.0% for-loop [37] 50.0% [60] 180(1.8%) 0(0.0%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 loop [46] 50.0% set [69] 50.0% ---------------------------------------------------------------------- err-lsts->split-indices [52] 100.0% [61] 178(1.8%) 0(0.0%) add-splitpoint ...erbie/src/core/regimes.rkt:237:2 for-loop [72] 100.0% ---------------------------------------------------------------------- taylor-alt [53] 100.0% [62] 178(1.8%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [73] 100.0% ---------------------------------------------------------------------- ??? [54] 100.0% [63] 1668(17.1%) 0(0.0%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [84] 63.4% bf* [75] 24.8% ...higher-order.rkt:373:33 [77] 11.8% ---------------------------------------------------------------------- sort [55] 30.2% copying-mergesort [64] 69.8% [64] 1326(13.6%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [64] 69.8% jloop [3] 15.5% loop [74] 14.7% ---------------------------------------------------------------------- for-loop [57] 100.0% [65] 530(5.4%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [76] 100.0% ---------------------------------------------------------------------- ??? [54] 100.0% [66] 452(4.6%) 452(4.6%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ---------------------------------------------------------------------- for-loop [56] 100.0% [67] 182(1.9%) 0(0.0%) eval-const-expr ...k/herbie/src/programs.rkt:180:0 bf* [75] 100.0% ---------------------------------------------------------------------- atab-add-altn [59] 100.0% [68] 182(1.9%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [78] 100.0% ---------------------------------------------------------------------- loop! [60] 100.0% [69] 180(1.8%) 180(1.8%) set ...collects/racket/private/set-types.rkt:982:0 ---------------------------------------------------------------------- for-loop [56] 100.0% [70] 180(1.8%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [79] 100.0% ---------------------------------------------------------------------- for-loop [56] 100.0% [71] 180(1.8%) 0(0.0%) setfindf ...e/ztatlock/herbie/src/common.rkt:173:0 for-loop [80] 100.0% ---------------------------------------------------------------------- add-splitpoint [61] 100.0% [72] 178(1.8%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:239:4 for-loop [81] 100.0% ---------------------------------------------------------------------- for-loop [62] 100.0% [73] 178(1.8%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [82] 100.0% ---------------------------------------------------------------------- sort [55] 41.6% copying-mergesort [64] 58.4% [74] 860(8.8%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [83] 100.0% ---------------------------------------------------------------------- eval-const-expr [67] 30.5% ??? [63] 69.5% [75] 596(6.1%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [84] 100.0% ---------------------------------------------------------------------- hash-update! [65] 100.0% [76] 530(5.4%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [85] 100.0% ---------------------------------------------------------------------- ??? [63] 100.0% [77] 196(2.0%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [86] 100.0% ---------------------------------------------------------------------- best-and-tied-at-points [68] 100.0% [78] 182(1.9%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 eval-prog [88] 100.0% ---------------------------------------------------------------------- ->flonum [70] 100.0% [79] 180(1.8%) 180(1.8%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ---------------------------------------------------------------------- setfindf [71] 100.0% [80] 180(1.8%) 180(1.8%) for-loop ...e/ztatlock/herbie/src/common.rkt:174:2 ---------------------------------------------------------------------- for-loop [72] 100.0% [81] 178(1.8%) 178(1.8%) for-loop ...lock/herbie/src/core/regimes.rkt:243:8 ---------------------------------------------------------------------- location-do [73] 100.0% [82] 178(1.8%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [87] 100.0% ---------------------------------------------------------------------- jloop [3] 48.9% loop [74] 51.1% [83] 1684(17.2%) 0(0.0%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [88] 100.0% ---------------------------------------------------------------------- bf* [75] 36.0% ??? [63] 64.0% [84] 1654(16.9%) 0(0.0%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfadd [89] 93.0% ??? [92] 7.0% ---------------------------------------------------------------------- ??? [76] 100.0% [85] 530(5.4%) 530(5.4%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 ---------------------------------------------------------------------- ...higher-order.rkt:373:33 [77]100.0% [86] 196(2.0%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [90] 100.0% ---------------------------------------------------------------------- approximate9 [82] 100.0% [87] 178(1.8%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [91] 100.0% ---------------------------------------------------------------------- make-exacts* [31] 6.8% errors [78] 7.0% for-loop [58] 7.0% loop [25] 14.6% ??? [83] 64.6% [88] 2608(26.7%) 1704(17.4%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 hash-ref! [91] 21.5% ??? [93] 13.2% ---------------------------------------------------------------------- ??? [84] 100.0% [89] 1538(15.7%) 1228(12.6%) bfadd ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [94] 20.2% ---------------------------------------------------------------------- ??? [86] 37.3% ??? [54] 62.7% [90] 526(5.4%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [92] 100.0% ---------------------------------------------------------------------- for-loop [11] 4.8% ??? [99] 4.8% loop [87] 4.8% for-loop [10] 9.6% loop [46] 11.9% eval-prog [88] 64.0% [91] 738(7.6%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 bigfloat-hash [95] 64.0% ??? [6] 11.9% ??? [4] 9.6% ??? [99] 4.8% ??? [5] 4.8% simplify [98] 4.8% ---------------------------------------------------------------------- ??? [84] 18.1% ??? [90] 81.9% [92] 642(6.6%) 312(3.2%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [96] 51.4% ---------------------------------------------------------------------- eval-prog [88] 100.0% [93] 344(3.5%) 166(1.7%) ??? ...collects/racket/private/qq-and-or.rkt:155:9 ??? [97] 51.7% ---------------------------------------------------------------------- bfadd [89] 100.0% [94] 310(3.2%) 310(3.2%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ---------------------------------------------------------------------- hash-ref! [91] 100.0% [95] 560(5.7%) 0(0.0%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:165:0 bfcanonicalize [101] 63.2% sig+exp->bigfloat [102] 36.8% ---------------------------------------------------------------------- ??? [92] 100.0% [96] 330(3.4%) 216(2.2%) ??? ...llects/racket/contract/combinator.rkt:178:4 any-wrap/traverse [103] 34.5% ---------------------------------------------------------------------- ??? [93] 100.0% [97] 178(1.8%) 178(1.8%) ??? ...ollects/racket/private/qq-and-or.rkt:164:21 ---------------------------------------------------------------------- hash-ref! [91] 100.0% [98] 178(1.8%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 debug-print [100] 100.0% ---------------------------------------------------------------------- hash-ref! [91] 100.0% [99] 178(1.8%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [91] 100.0% ---------------------------------------------------------------------- simplify [98] 49.7% for-loop [39] 50.3% [100] 358(3.7%) 0(0.0%) debug-print ...ztatlock/herbie/src/debug.rkt:107:0 for-loop [104] 100.0% ---------------------------------------------------------------------- bigfloat-hash [95] 100.0% [101] 354(3.6%) 354(3.6%) bfcanonicalize .../private/bigfloat/mpfr.rkt:155:0 ---------------------------------------------------------------------- bigfloat-hash [95] 100.0% [102] 206(2.1%) 206(2.1%) sig+exp->bigfloat ...ivate/bigfloat/mpfr.rkt:385:0 ---------------------------------------------------------------------- ??? [96] 100.0% [103] 114(1.2%) 114(1.2%) any-wrap/traverse ...cket/utils/any-wrap.rkt:106:2 ---------------------------------------------------------------------- debug-print [100] 100.0% [104] 358(3.7%) 178(1.8%) for-loop /home/ztatlock/herbie/src/debug.rkt:113:2 write-proc [105] 50.3% ---------------------------------------------------------------------- for-loop [104] 100.0% [105] 180(1.8%) 180(1.8%) write-proc ...lock/herbie/src/alternative.rkt:22:9 ----------------------------------------------------------------------