Details

Time bar (total: 12.6s)

analyze2.5s (20%)

Algorithm
search
egg-herbie
Rules
668×times-frac_binary64
359×cancel-sign-sub-inv_binary64
300×associate-/l*_binary64
286×*-commutative_binary64
260×neg-mul-1_binary64 neg-sub0_binary64
226×distribute-rgt-neg-in_binary64
200×distribute-neg-frac_binary64
197×distribute-lft-neg-in_binary64
155×associate-/r/_binary64
122×associate-/l/_binary64
109×sub-neg_binary64
93×associate-/r*_binary64
85×swap-sqr_binary64
81×associate-*r/_binary64
65×associate-*l/_binary64
49×sqr-pow_binary64
42×associate-*l*_binary64
30×div-sub_binary64
29×distribute-lft-neg-out_binary64
28×associate-*r*_binary64
15×sub0-neg_binary64 associate-+l-_binary64 +-commutative_binary64
13×unpow2_binary64
12×unpow1/2_binary64 unpow1_binary64 rem-sqrt-square_binary64
1-exp_binary64 swap-M-D
not-true not-false not-not not-and not-or and-true-l and-true-r and-false-l and-false-r and-same or-true-l or-true-r or-false-l or-false-r or-same erfc-erf_binary64 erf-erfc_binary64 erf-odd_binary64 if-if-and-not_binary64 if-if-and_binary64 if-if-or-not_binary64 if-if-or_binary64 if-not_binary64 if-same_binary64 if-false_binary64 if-true_binary64 not-gte_binary64 not-lte_binary64 not-gt_binary64 not-lt_binary64 gte-same_binary64 lte-same_binary64 gt-same_binary64 lt-same_binary64 sinh---cosh_binary64 sinh-+-cosh_binary64 sinh-cosh_binary64 tanh-def-c_binary64 tanh-def-b_binary64 tanh-def-a_binary64 cosh-def_binary64 sinh-def_binary64 tan-neg_binary64 cos-neg_binary64 sin-neg_binary64 tan-0_binary64 cos-0_binary64 sin-0_binary64 hang-m-tan_binary64 hang-p-tan_binary64 hang-m0-tan_binary64 hang-p0-tan_binary64 hang-0m-tan_binary64 hang-0p-tan_binary64 tan-+PI/2_binary64 tan-+PI_binary64 tan-PI_binary64 tan-PI/3_binary64 tan-PI/4_binary64 tan-PI/6_binary64 cos-+PI/2_binary64 cos-+PI_binary64 cos-PI_binary64 cos-PI/2_binary64 cos-PI/3_binary64 cos-PI/4_binary64 cos-PI/6_binary64 sin-+PI/2_binary64 sin-+PI_binary64 sin-PI_binary64 sin-PI/2_binary64 sin-PI/3_binary64 sin-PI/4_binary64 sin-PI/6_binary64 sub-1-sin_binary64 sub-1-cos_binary64 -1-add-sin_binary64 -1-add-cos_binary64 1-sub-sin_binary64 1-sub-cos_binary64 cos-sin-sum_binary64 log-E_binary64 log-pow_binary64 log-rec_binary64 log-div_binary64 log-prod_binary64 pow-base-0_binary64 unpow1/3_binary64 unpow3_binary64 pow-plus_binary64 exp-to-pow_binary64 pow-base-1_binary64 unpow0_binary64 unpow-1_binary64 exp-lft-cube_binary64 exp-lft-sqr_binary64 exp-cbrt_binary64 exp-sqrt_binary64 exp-prod_binary64 div-exp_binary64 rec-exp_binary64 prod-exp_binary64 exp-diff_binary64 exp-neg_binary64 exp-sum_binary64 e-exp-1_binary64 exp-1-e_binary64 exp-0_binary64 rem-log-exp_binary64 rem-exp-log_binary64 cube-unmult_binary64 cube-mult_binary64 cube-div_binary64 cube-prod_binary64 cube-neg_binary64 rem-3cbrt-rft_binary64 rem-3cbrt-lft_binary64 rem-cbrt-cube_binary64 rem-cube-cbrt_binary64 sqr-abs_binary64 sqr-neg_binary64 rem-square-sqrt_binary64 unsub-neg_binary64 mul-1-neg_binary64 /-rgt-identity_binary64 *-rgt-identity_binary64 *-lft-identity_binary64 remove-double-neg_binary64 --rgt-identity_binary64 +-rgt-identity_binary64 +-lft-identity_binary64 mul0-rgt_binary64 mul0-lft_binary64 div0_binary64 *-inverses_binary64 +-inverses_binary64 lft-mult-inverse_binary64 rgt-mult-inverse_binary64 remove-double-div_binary64 pow-sqr_binary64 difference-of-sqr--1_binary64 difference-of-sqr-1_binary64 difference-of-squares_binary64 unswap-sqr_binary64 cancel-sign-sub_binary64 distribute-frac-neg_binary64 distribute-neg-out_binary64 distribute-neg-in_binary64 distribute-rgt-neg-out_binary64 distribute-rgt1-in_binary64 distribute-lft1-in_binary64 distribute-rgt-out--_binary64 distribute-rgt-out_binary64 distribute-lft-out--_binary64 distribute-lft-out_binary64 distribute-rgt-in_binary64 distribute-lft-in_binary64 count-2_binary64 associate--r-_binary64 associate--l-_binary64 associate--l+_binary64 associate--r+_binary64 associate-+r-_binary64 associate-+l+_binary64 associate-+r+_binary64
Iterations

Useful iterations: 0 (0.0ms)

IterNodesCost
0125432
1374432
21139432
32964432
45015432
066
166
Search
TrueOtherFalseIter
0%99.7%0.3%0
0%99.7%0.3%1
0%99.7%0.3%2
0%99.7%0.3%3
0%99.7%0.3%4
0%99.7%0.3%5
0%99.7%0.3%6
0%99.7%0.3%7
0%99.7%0.3%8
0%99.7%0.3%9
0%99.7%0.3%10
0%99.7%0.3%11
0%99.7%0.3%12
5.1%94.6%0.3%13
7%92.7%0.3%14
Symmetry

(sort M D)

Compiler

Compiled 19 to 19 computations (0% saved)

sample62.0ms (0.5%)

Algorithm
intervals
Results
18.0ms256×body128valid
7.0ms102×body128nan
3.0ms43×body128invalid
Compiler

Compiled 37 to 43 computations (-16.2% saved)

simplify50.0ms (0.4%)

Algorithm
egg-herbie
Rules
893×div-sub_binary64
645×distribute-neg-frac_binary64
581×distribute-rgt-neg-in_binary64
569×distribute-lft-neg-in_binary64
418×associate-/l*_binary64
372×cancel-sign-sub-inv_binary64
263×associate-/l/_binary64
254×*-commutative_binary64
227×times-frac_binary64
189×associate-/r/_binary64
163×associate-/r*_binary64
133×neg-mul-1_binary64
132×neg-sub0_binary64
91×associate-*l/_binary64
78×associate-*r/_binary64
77×associate-*l*_binary64
69×associate-*r*_binary64
31×sub-neg_binary64
22×distribute-lft-neg-out_binary64
20×swap-sqr_binary64
18×distribute-rgt-neg-out_binary64
15×distribute-frac-neg_binary64
unswap-sqr_binary64
sqr-pow_binary64
unsub-neg_binary64
pow-plus_binary64 cube-unmult_binary64 +-commutative_binary64
mul0-rgt_binary64 mul0-lft_binary64 div0_binary64 distribute-rgt-in_binary64 distribute-lft-in_binary64
unpow3_binary64 unpow2_binary64 unpow1/2_binary64 unpow1_binary64 1-exp_binary64 rem-sqrt-square_binary64 sub0-neg_binary64 associate-+l-_binary64 associate-+l+_binary64
not-true not-false not-not not-and not-or and-true-l and-true-r and-false-l and-false-r and-same or-true-l or-true-r or-false-l or-false-r or-same erfc-erf_binary64 erf-erfc_binary64 erf-odd_binary64 if-if-and-not_binary64 if-if-and_binary64 if-if-or-not_binary64 if-if-or_binary64 if-not_binary64 if-same_binary64 if-false_binary64 if-true_binary64 not-gte_binary64 not-lte_binary64 not-gt_binary64 not-lt_binary64 gte-same_binary64 lte-same_binary64 gt-same_binary64 lt-same_binary64 sinh---cosh_binary64 sinh-+-cosh_binary64 sinh-cosh_binary64 tanh-def-c_binary64 tanh-def-b_binary64 tanh-def-a_binary64 cosh-def_binary64 sinh-def_binary64 tan-neg_binary64 cos-neg_binary64 sin-neg_binary64 tan-0_binary64 cos-0_binary64 sin-0_binary64 hang-m-tan_binary64 hang-p-tan_binary64 hang-m0-tan_binary64 hang-p0-tan_binary64 hang-0m-tan_binary64 hang-0p-tan_binary64 tan-+PI/2_binary64 tan-+PI_binary64 tan-PI_binary64 tan-PI/3_binary64 tan-PI/4_binary64 tan-PI/6_binary64 cos-+PI/2_binary64 cos-+PI_binary64 cos-PI_binary64 cos-PI/2_binary64 cos-PI/3_binary64 cos-PI/4_binary64 cos-PI/6_binary64 sin-+PI/2_binary64 sin-+PI_binary64 sin-PI_binary64 sin-PI/2_binary64 sin-PI/3_binary64 sin-PI/4_binary64 sin-PI/6_binary64 sub-1-sin_binary64 sub-1-cos_binary64 -1-add-sin_binary64 -1-add-cos_binary64 1-sub-sin_binary64 1-sub-cos_binary64 cos-sin-sum_binary64 log-E_binary64 log-pow_binary64 log-rec_binary64 log-div_binary64 log-prod_binary64 pow-base-0_binary64 unpow1/3_binary64 exp-to-pow_binary64 pow-base-1_binary64 unpow0_binary64 unpow-1_binary64 exp-lft-cube_binary64 exp-lft-sqr_binary64 exp-cbrt_binary64 exp-sqrt_binary64 exp-prod_binary64 div-exp_binary64 rec-exp_binary64 prod-exp_binary64 exp-diff_binary64 exp-neg_binary64 exp-sum_binary64 e-exp-1_binary64 exp-1-e_binary64 exp-0_binary64 rem-log-exp_binary64 rem-exp-log_binary64 cube-mult_binary64 cube-div_binary64 cube-prod_binary64 cube-neg_binary64 rem-3cbrt-rft_binary64 rem-3cbrt-lft_binary64 rem-cbrt-cube_binary64 rem-cube-cbrt_binary64 sqr-abs_binary64 sqr-neg_binary64 rem-square-sqrt_binary64 mul-1-neg_binary64 /-rgt-identity_binary64 *-rgt-identity_binary64 *-lft-identity_binary64 remove-double-neg_binary64 --rgt-identity_binary64 +-rgt-identity_binary64 +-lft-identity_binary64 *-inverses_binary64 +-inverses_binary64 lft-mult-inverse_binary64 rgt-mult-inverse_binary64 remove-double-div_binary64 pow-sqr_binary64 difference-of-sqr--1_binary64 difference-of-sqr-1_binary64 difference-of-squares_binary64 cancel-sign-sub_binary64 distribute-neg-out_binary64 distribute-neg-in_binary64 distribute-rgt1-in_binary64 distribute-lft1-in_binary64 distribute-rgt-out--_binary64 distribute-rgt-out_binary64 distribute-lft-out--_binary64 distribute-lft-out_binary64 count-2_binary64 associate--r-_binary64 associate--l-_binary64 associate--l+_binary64 associate--r+_binary64 associate-+r-_binary64 associate-+r+_binary64
Counts
1 → 0
Iterations

Useful iterations: 0 (0.0ms)

IterNodesCost
01827
14227
211127
371827
4281627
5468627
6610027

prune2.0ms (0%)

Pruning

1 alts after pruning (1 fresh and 0 done)

PrunedKeptTotal
New000
Fresh011
Picked000
Done000
Total011
Error
15.1b
Counts
1 → 1
Compiler

Compiled 18 to 18 computations (0% saved)

localize14.0ms (0.1%)

Local error

Found 4 expressions with local error:

2.1b
(*.f64 w0 (sqrt.f64 (-.f64 1 (*.f64 (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2) (/.f64 h l)))))
4.9b
(sqrt.f64 (-.f64 1 (*.f64 (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2) (/.f64 h l))))
5.1b
(/.f64 (*.f64 M D) (*.f64 2 d))
12.2b
(*.f64 (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2) (/.f64 h l))

rewrite231.0ms (1.8%)

Algorithm
rewrite-expression-head
Error
8.7b
Rules
67×add-exp-log_binary64
38×add-sqr-sqrt_binary64
27×prod-exp_binary64
23×add-cbrt-cube_binary64
19×div-exp_binary64 associate-*r*_binary64
17×add-cube-cbrt_binary64 *-un-lft-identity_binary64
15×times-frac_binary64
13×associate-*l*_binary64
10×pow-exp_binary64 unswap-sqr_binary64
pow1_binary64 cbrt-unprod_binary64 unpow-prod-down_binary64 sqrt-prod_binary64
cbrt-undiv_binary64
add-log-exp_binary64 sqrt-div_binary64
unpow2_binary64 sqr-pow_binary64 associate-*r/_binary64 div-inv_binary64
pow-to-exp_binary64 *-commutative_binary64 flip3--_binary64 flip--_binary64
frac-2neg_binary64 clear-num_binary64 associate-/l*_binary64 associate-/r*_binary64 pow1/2_binary64 sqrt-pow1_binary64 rem-sqrt-square_binary64 pow-prod-down_binary64
Counts
4 → 116
Calls

4 calls:

11.0ms
(*.f64 (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2) (/.f64 h l))
8.0ms
(*.f64 w0 (sqrt.f64 (-.f64 1 (*.f64 (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2) (/.f64 h l)))))
6.0ms
(/.f64 (*.f64 M D) (*.f64 2 d))
4.0ms
(sqrt.f64 (-.f64 1 (*.f64 (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2) (/.f64 h l))))
Compiler

Compiled 3226 to 1835 computations (43.1% saved)

series428.0ms (3.4%)

Error
7.1b
Counts
4 → 64
Calls

4 calls:

139.0ms
(*.f64 w0 (sqrt.f64 (-.f64 1 (*.f64 (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2) (/.f64 h l)))))
128.0ms
(*.f64 (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2) (/.f64 h l))
107.0ms
(sqrt.f64 (-.f64 1 (*.f64 (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2) (/.f64 h l))))
33.0ms
(/.f64 (*.f64 M D) (*.f64 2 d))
Compiler

Compiled 3006 to 2856 computations (5% saved)

simplify125.0ms (1%)

Algorithm
egg-herbie
Rules
628×associate-/l/_binary64
279×associate-*l*_binary64
264×distribute-rgt-neg-in_binary64
252×times-frac_binary64
245×distribute-lft-neg-in_binary64
244×associate-*r*_binary64
210×associate-/l*_binary64
161×distribute-neg-frac_binary64
156×associate-*r/_binary64
152×*-commutative_binary64
147×cancel-sign-sub-inv_binary64
128×associate-/r*_binary64 associate-*l/_binary64
83×unswap-sqr_binary64
82×log-prod_binary64
73×cube-prod_binary64
66×swap-sqr_binary64
59×exp-prod_binary64 distribute-rgt-in_binary64
58×sqr-pow_binary64
57×neg-sub0_binary64
54×distribute-lft-in_binary64
52×neg-mul-1_binary64
48×log-div_binary64 sub-neg_binary64
39×cube-div_binary64
36×*-rgt-identity_binary64 *-lft-identity_binary64
29×+-commutative_binary64
22×associate-/r/_binary64
12×distribute-lft-neg-out_binary64
10×distribute-rgt-out_binary64
log-pow_binary64
unpow2_binary64 unpow1/2_binary64 pow-plus_binary64 unpow1_binary64 cube-unmult_binary64
distribute-rgt1-in_binary64
/-rgt-identity_binary64 associate-+r-_binary64
unpow3_binary64 mul-1-neg_binary64 pow-sqr_binary64 distribute-lft-out_binary64
exp-sqrt_binary64 rem-sqrt-square_binary64 distribute-rgt-neg-out_binary64 associate--l+_binary64 associate--r+_binary64 associate-+l+_binary64
cube-mult_binary64 unsub-neg_binary64
rem-square-sqrt_binary64 distribute-neg-in_binary64 distribute-lft1-in_binary64 associate-+r+_binary64
1-exp_binary64 exp-1-e_binary64 associate-+l-_binary64
not-true not-false not-not not-and not-or and-true-l and-true-r and-false-l and-false-r and-same or-true-l or-true-r or-false-l or-false-r or-same erfc-erf_binary64 erf-erfc_binary64 erf-odd_binary64 if-if-and-not_binary64 if-if-and_binary64 if-if-or-not_binary64 if-if-or_binary64 if-not_binary64 if-same_binary64 if-false_binary64 if-true_binary64 not-gte_binary64 not-lte_binary64 not-gt_binary64 not-lt_binary64 gte-same_binary64 lte-same_binary64 gt-same_binary64 lt-same_binary64 sinh---cosh_binary64 sinh-+-cosh_binary64 sinh-cosh_binary64 tanh-def-c_binary64 tanh-def-b_binary64 tanh-def-a_binary64 cosh-def_binary64 sinh-def_binary64 tan-neg_binary64 cos-neg_binary64 sin-neg_binary64 tan-0_binary64 cos-0_binary64 sin-0_binary64 hang-m-tan_binary64 hang-p-tan_binary64 hang-m0-tan_binary64 hang-p0-tan_binary64 hang-0m-tan_binary64 hang-0p-tan_binary64 tan-+PI/2_binary64 tan-+PI_binary64 tan-PI_binary64 tan-PI/3_binary64 tan-PI/4_binary64 tan-PI/6_binary64 cos-+PI/2_binary64 cos-+PI_binary64 cos-PI_binary64 cos-PI/2_binary64 cos-PI/3_binary64 cos-PI/4_binary64 cos-PI/6_binary64 sin-+PI/2_binary64 sin-+PI_binary64 sin-PI_binary64 sin-PI/2_binary64 sin-PI/3_binary64 sin-PI/4_binary64 sin-PI/6_binary64 sub-1-sin_binary64 sub-1-cos_binary64 -1-add-sin_binary64 -1-add-cos_binary64 1-sub-sin_binary64 1-sub-cos_binary64 cos-sin-sum_binary64 log-E_binary64 log-rec_binary64 pow-base-0_binary64 unpow1/3_binary64 exp-to-pow_binary64 pow-base-1_binary64 unpow0_binary64 unpow-1_binary64 exp-lft-cube_binary64 exp-lft-sqr_binary64 exp-cbrt_binary64 div-exp_binary64 rec-exp_binary64 prod-exp_binary64 exp-diff_binary64 exp-neg_binary64 exp-sum_binary64 e-exp-1_binary64 exp-0_binary64 rem-log-exp_binary64 rem-exp-log_binary64 cube-neg_binary64 rem-3cbrt-rft_binary64 rem-3cbrt-lft_binary64 rem-cbrt-cube_binary64 rem-cube-cbrt_binary64 sqr-abs_binary64 sqr-neg_binary64 div-sub_binary64 remove-double-neg_binary64 sub0-neg_binary64 --rgt-identity_binary64 +-rgt-identity_binary64 +-lft-identity_binary64 mul0-rgt_binary64 mul0-lft_binary64 div0_binary64 *-inverses_binary64 +-inverses_binary64 lft-mult-inverse_binary64 rgt-mult-inverse_binary64 remove-double-div_binary64 difference-of-sqr--1_binary64 difference-of-sqr-1_binary64 difference-of-squares_binary64 cancel-sign-sub_binary64 distribute-frac-neg_binary64 distribute-neg-out_binary64 distribute-rgt-out--_binary64 distribute-lft-out--_binary64 count-2_binary64 associate--r-_binary64 associate--l-_binary64
Counts
180 → 136
Iterations

Useful iterations: 2 (0.0ms)

IterNodesCost
02714147
16743892
228963891
354753891

prune137.0ms (1.1%)

Pruning

10 alts after pruning (10 fresh and 0 done)

PrunedKeptTotal
New12610136
Fresh000
Picked101
Done000
Total12710137
Error
5.1b
Counts
137 → 10
Compiler

Compiled 2230 to 1308 computations (41.3% saved)

localize14.0ms (0.1%)

Local error

Found 4 expressions with local error:

4.9b
(sqrt.f64 (-.f64 1 (/.f64 (*.f64 h (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2)) l)))
5.1b
(/.f64 (*.f64 M D) (*.f64 2 d))
5.8b
(*.f64 h (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2))
6.1b
(/.f64 (*.f64 h (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2)) l)

rewrite227.0ms (1.8%)

Algorithm
rewrite-expression-head
Error
4.9b
Rules
67×add-exp-log_binary64
26×prod-exp_binary64
23×add-cbrt-cube_binary64
20×div-exp_binary64 add-sqr-sqrt_binary64
13×*-un-lft-identity_binary64
10×pow-exp_binary64 add-cube-cbrt_binary64 associate-*r*_binary64
cbrt-undiv_binary64 cbrt-unprod_binary64 unpow-prod-down_binary64 sqrt-prod_binary64
pow1_binary64 times-frac_binary64
add-log-exp_binary64 associate-/r*_binary64 unswap-sqr_binary64
div-inv_binary64 associate-*l*_binary64
pow-to-exp_binary64 frac-2neg_binary64 clear-num_binary64 associate-/l*_binary64 unpow2_binary64 sqr-pow_binary64 sqrt-div_binary64 difference-of-squares_binary64
*-commutative_binary64 pow1/2_binary64 sqrt-pow1_binary64 flip3--_binary64 flip--_binary64 distribute-lft-out--_binary64 rem-sqrt-square_binary64
Counts
4 → 99
Calls

4 calls:

8.0ms
(/.f64 (*.f64 M D) (*.f64 2 d))
8.0ms
(*.f64 h (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2))
7.0ms
(/.f64 (*.f64 h (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2)) l)
7.0ms
(sqrt.f64 (-.f64 1 (/.f64 (*.f64 h (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2)) l)))
Compiler

Compiled 2610 to 1612 computations (38.2% saved)

series370.0ms (2.9%)

Error
5.1b
Counts
4 → 58
Calls

4 calls:

129.0ms
(/.f64 (*.f64 h (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2)) l)
108.0ms
(sqrt.f64 (-.f64 1 (/.f64 (*.f64 h (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2)) l)))
87.0ms
(*.f64 h (pow.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) 2))
35.0ms
(/.f64 (*.f64 M D) (*.f64 2 d))
Compiler

Compiled 2650 to 2558 computations (3.5% saved)

simplify102.0ms (0.8%)

Algorithm
egg-herbie
Rules
819×associate-/r/_binary64
263×times-frac_binary64
225×distribute-rgt-neg-in_binary64
216×associate-/l*_binary64
213×distribute-lft-neg-in_binary64
174×distribute-neg-frac_binary64
154×associate-*l*_binary64
148×associate-*r*_binary64
130×associate-/r*_binary64
107×cancel-sign-sub-inv_binary64
97×associate-*r/_binary64
96×associate-*l/_binary64
89×*-commutative_binary64
75×unswap-sqr_binary64
71×log-prod_binary64
63×swap-sqr_binary64
62×log-div_binary64
57×sub-neg_binary64
52×exp-prod_binary64
51×cube-prod_binary64
50×sqr-pow_binary64
49×neg-sub0_binary64
48×cube-div_binary64
46×neg-mul-1_binary64
30×distribute-rgt-in_binary64
26×associate-/l/_binary64
24×distribute-lft-in_binary64
23×+-commutative_binary64
20×*-rgt-identity_binary64
19×*-lft-identity_binary64
12×/-rgt-identity_binary64
11×associate--l+_binary64
10×log-pow_binary64
unpow2_binary64 unpow1/2_binary64 pow-plus_binary64 unpow1_binary64
cube-unmult_binary64 distribute-lft-neg-out_binary64
unpow3_binary64 distribute-rgt1-in_binary64
log-rec_binary64 exp-sqrt_binary64 rem-sqrt-square_binary64 unsub-neg_binary64 pow-sqr_binary64 associate--r+_binary64 associate-+l+_binary64
cube-mult_binary64 div-sub_binary64 mul-1-neg_binary64 distribute-lft-out_binary64
rem-square-sqrt_binary64 distribute-neg-in_binary64 distribute-rgt-neg-out_binary64 distribute-rgt-out_binary64 associate-+r+_binary64
1-exp_binary64 exp-1-e_binary64 rem-3cbrt-rft_binary64 rem-3cbrt-lft_binary64
not-true not-false not-not not-and not-or and-true-l and-true-r and-false-l and-false-r and-same or-true-l or-true-r or-false-l or-false-r or-same erfc-erf_binary64 erf-erfc_binary64 erf-odd_binary64 if-if-and-not_binary64 if-if-and_binary64 if-if-or-not_binary64 if-if-or_binary64 if-not_binary64 if-same_binary64 if-false_binary64 if-true_binary64 not-gte_binary64 not-lte_binary64 not-gt_binary64 not-lt_binary64 gte-same_binary64 lte-same_binary64 gt-same_binary64 lt-same_binary64 sinh---cosh_binary64 sinh-+-cosh_binary64 sinh-cosh_binary64 tanh-def-c_binary64 tanh-def-b_binary64 tanh-def-a_binary64 cosh-def_binary64 sinh-def_binary64 tan-neg_binary64 cos-neg_binary64 sin-neg_binary64 tan-0_binary64 cos-0_binary64 sin-0_binary64 hang-m-tan_binary64 hang-p-tan_binary64 hang-m0-tan_binary64 hang-p0-tan_binary64 hang-0m-tan_binary64 hang-0p-tan_binary64 tan-+PI/2_binary64 tan-+PI_binary64 tan-PI_binary64 tan-PI/3_binary64 tan-PI/4_binary64 tan-PI/6_binary64 cos-+PI/2_binary64 cos-+PI_binary64 cos-PI_binary64 cos-PI/2_binary64 cos-PI/3_binary64 cos-PI/4_binary64 cos-PI/6_binary64 sin-+PI/2_binary64 sin-+PI_binary64 sin-PI_binary64 sin-PI/2_binary64 sin-PI/3_binary64 sin-PI/4_binary64 sin-PI/6_binary64 sub-1-sin_binary64 sub-1-cos_binary64 -1-add-sin_binary64 -1-add-cos_binary64 1-sub-sin_binary64 1-sub-cos_binary64 cos-sin-sum_binary64 log-E_binary64 pow-base-0_binary64 unpow1/3_binary64 exp-to-pow_binary64 pow-base-1_binary64 unpow0_binary64 unpow-1_binary64 exp-lft-cube_binary64 exp-lft-sqr_binary64 exp-cbrt_binary64 div-exp_binary64 rec-exp_binary64 prod-exp_binary64 exp-diff_binary64 exp-neg_binary64 exp-sum_binary64 e-exp-1_binary64 exp-0_binary64 rem-log-exp_binary64 rem-exp-log_binary64 cube-neg_binary64 rem-cbrt-cube_binary64 rem-cube-cbrt_binary64 sqr-abs_binary64 sqr-neg_binary64 remove-double-neg_binary64 sub0-neg_binary64 --rgt-identity_binary64 +-rgt-identity_binary64 +-lft-identity_binary64 mul0-rgt_binary64 mul0-lft_binary64 div0_binary64 *-inverses_binary64 +-inverses_binary64 lft-mult-inverse_binary64 rgt-mult-inverse_binary64 remove-double-div_binary64 difference-of-sqr--1_binary64 difference-of-sqr-1_binary64 difference-of-squares_binary64 cancel-sign-sub_binary64 distribute-frac-neg_binary64 distribute-neg-out_binary64 distribute-lft1-in_binary64 distribute-rgt-out--_binary64 distribute-lft-out--_binary64 count-2_binary64 associate--r-_binary64 associate--l-_binary64 associate-+l-_binary64 associate-+r-_binary64
Counts
157 → 102
Iterations

Useful iterations: 2 (0.0ms)

IterNodesCost
02243228
15303042
223263033
351493033

prune89.0ms (0.7%)

Pruning

12 alts after pruning (12 fresh and 0 done)

PrunedKeptTotal
New984102
Fresh189
Picked101
Done000
Total10012112
Error
4.4b
Counts
112 → 12
Compiler

Compiled 1194 to 790 computations (33.8% saved)

localize21.0ms (0.2%)

Local error

Found 4 expressions with local error:

6.1b
(/.f64 (*.f64 (*.f64 h (*.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d))))) (pow.f64 (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d))) 2)) l)
6.2b
(*.f64 h (*.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d)))))
20.6b
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d)))
20.6b
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d)))

rewrite272.0ms (2.2%)

Algorithm
rewrite-expression-head
Error
4.4b
Rules
144×add-exp-log_binary64
81×prod-exp_binary64
61×add-cbrt-cube_binary64
38×div-exp_binary64
37×cbrt-unprod_binary64
16×cbrt-undiv_binary64
10×cbrt-prod_binary64
pow1_binary64 add-cube-cbrt_binary64 add-sqr-sqrt_binary64 *-un-lft-identity_binary64
associate-*r/_binary64
pow-to-exp_binary64 pow-exp_binary64
cbrt-div_binary64
times-frac_binary64 associate-*l/_binary64
add-log-exp_binary64
div-inv_binary64 pow-prod-down_binary64 associate-*l*_binary64 associate-/l/_binary64 associate-/r*_binary64
pow1/3_binary64 frac-times_binary64
associate-*r*_binary64 *-commutative_binary64 frac-2neg_binary64 clear-num_binary64 associate-/l*_binary64
Counts
4 → 107
Calls

4 calls:

19.0ms
(/.f64 (*.f64 (*.f64 h (*.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d))))) (pow.f64 (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d))) 2)) l)
12.0ms
(*.f64 h (*.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d)))))
5.0ms
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d)))
4.0ms
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d)))
Compiler

Compiled 4712 to 2702 computations (42.7% saved)

series687.0ms (5.5%)

Error
4.4b
Counts
4 → 45
Calls

4 calls:

222.0ms
(*.f64 h (*.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d)))))
218.0ms
(/.f64 (*.f64 (*.f64 h (*.f64 (/.f64 (*.f64 M D) (*.f64 2 d)) (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d))))) (pow.f64 (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d))) 2)) l)
94.0ms
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d)))
93.0ms
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 2 d)))
Compiler

Compiled 4586 to 3847 computations (16.1% saved)

simplify196.0ms (1.6%)

Algorithm
egg-herbie
Rules
448×associate-*l*_binary64
425×associate-*r*_binary64
376×times-frac_binary64
325×associate-/l*_binary64
277×*-commutative_binary64
262×log-prod_binary64
192×log-div_binary64
175×associate-/r*_binary64
168×associate-*r/_binary64
153×associate-*l/_binary64
112×sub-neg_binary64
110×exp-prod_binary64
92×swap-sqr_binary64
78×distribute-rgt-neg-in_binary64
76×sqr-pow_binary64
72×exp-sum_binary64
64×unswap-sqr_binary64
50×distribute-neg-frac_binary64
49×cancel-sign-sub-inv_binary64
42×cube-div_binary64 unsub-neg_binary64
36×log-pow_binary64
35×unpow1/3_binary64
32×neg-mul-1_binary64 neg-sub0_binary64 associate-/r/_binary64 +-commutative_binary64
31×cube-prod_binary64 div-sub_binary64
30×exp-diff_binary64 associate-+l+_binary64
27×distribute-rgt-in_binary64 associate--l+_binary64
25×associate-/l/_binary64
23×distribute-rgt-neg-out_binary64 distribute-lft-in_binary64
19×associate-+l-_binary64 associate-+r+_binary64
18×distribute-lft-neg-out_binary64
16×exp-to-pow_binary64
14×pow-sqr_binary64 distribute-lft-neg-in_binary64
13×distribute-neg-out_binary64
12×distribute-neg-in_binary64
11×log-rec_binary64 cube-unmult_binary64
pow-plus_binary64
*-rgt-identity_binary64 associate--l-_binary64 associate-+r-_binary64
unpow2_binary64 unpow1/2_binary64 unpow1_binary64 remove-double-neg_binary64 associate--r-_binary64 associate--r+_binary64
/-rgt-identity_binary64
unpow3_binary64 exp-sqrt_binary64 exp-neg_binary64 cube-mult_binary64 rem-cube-cbrt_binary64 *-lft-identity_binary64
1-exp_binary64 rem-3cbrt-lft_binary64 rem-sqrt-square_binary64 distribute-rgt-out_binary64
not-true not-false not-not not-and not-or and-true-l and-true-r and-false-l and-false-r and-same or-true-l or-true-r or-false-l or-false-r or-same erfc-erf_binary64 erf-erfc_binary64 erf-odd_binary64 if-if-and-not_binary64 if-if-and_binary64 if-if-or-not_binary64 if-if-or_binary64 if-not_binary64 if-same_binary64 if-false_binary64 if-true_binary64 not-gte_binary64 not-lte_binary64 not-gt_binary64 not-lt_binary64 gte-same_binary64 lte-same_binary64 gt-same_binary64 lt-same_binary64 sinh---cosh_binary64 sinh-+-cosh_binary64 sinh-cosh_binary64 tanh-def-c_binary64 tanh-def-b_binary64 tanh-def-a_binary64 cosh-def_binary64 sinh-def_binary64 tan-neg_binary64 cos-neg_binary64 sin-neg_binary64 tan-0_binary64 cos-0_binary64 sin-0_binary64 hang-m-tan_binary64 hang-p-tan_binary64 hang-m0-tan_binary64 hang-p0-tan_binary64 hang-0m-tan_binary64 hang-0p-tan_binary64 tan-+PI/2_binary64 tan-+PI_binary64 tan-PI_binary64 tan-PI/3_binary64 tan-PI/4_binary64 tan-PI/6_binary64 cos-+PI/2_binary64 cos-+PI_binary64 cos-PI_binary64 cos-PI/2_binary64 cos-PI/3_binary64 cos-PI/4_binary64 cos-PI/6_binary64 sin-+PI/2_binary64 sin-+PI_binary64 sin-PI_binary64 sin-PI/2_binary64 sin-PI/3_binary64 sin-PI/4_binary64 sin-PI/6_binary64 sub-1-sin_binary64 sub-1-cos_binary64 -1-add-sin_binary64 -1-add-cos_binary64 1-sub-sin_binary64 1-sub-cos_binary64 cos-sin-sum_binary64 log-E_binary64 pow-base-0_binary64 pow-base-1_binary64 unpow0_binary64 unpow-1_binary64 exp-lft-cube_binary64 exp-lft-sqr_binary64 exp-cbrt_binary64 div-exp_binary64 rec-exp_binary64 prod-exp_binary64 e-exp-1_binary64 exp-1-e_binary64 exp-0_binary64 rem-log-exp_binary64 rem-exp-log_binary64 cube-neg_binary64 rem-3cbrt-rft_binary64 rem-cbrt-cube_binary64 sqr-abs_binary64 sqr-neg_binary64 rem-square-sqrt_binary64 mul-1-neg_binary64 sub0-neg_binary64 --rgt-identity_binary64 +-rgt-identity_binary64 +-lft-identity_binary64 mul0-rgt_binary64 mul0-lft_binary64 div0_binary64 *-inverses_binary64 +-inverses_binary64 lft-mult-inverse_binary64 rgt-mult-inverse_binary64 remove-double-div_binary64 difference-of-sqr--1_binary64 difference-of-sqr-1_binary64 difference-of-squares_binary64 cancel-sign-sub_binary64 distribute-frac-neg_binary64 distribute-rgt1-in_binary64 distribute-lft1-in_binary64 distribute-rgt-out--_binary64 distribute-lft-out--_binary64 distribute-lft-out_binary64 count-2_binary64
Counts
152 → 137
Iterations

Useful iterations: 3 (0.0ms)

IterNodesCost
03545960
19403519
233653284
347033250
449953250
549603250

prune163.0ms (1.3%)

Pruning

12 alts after pruning (12 fresh and 0 done)

PrunedKeptTotal
New1361137
Fresh01111
Picked101
Done000
Total13712149
Error
4.4b
Counts
149 → 12
Compiler

Compiled 2615 to 1697 computations (35.1% saved)

localize19.0ms (0.2%)

Local error

Found 4 expressions with local error:

5.1b
(/.f64 (*.f64 M D) (*.f64 d 2))
6.2b
(*.f64 h (pow.f64 (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 d 2))) 4))
20.6b
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 d 2)))
20.6b
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 d 2)))

rewrite218.0ms (1.7%)

Algorithm
rewrite-expression-head
Error
4.2b
Rules
21×add-exp-log_binary64
18×add-cbrt-cube_binary64
17×add-sqr-sqrt_binary64
16×cbrt-prod_binary64
12×associate-*r*_binary64
10×add-cube-cbrt_binary64 *-un-lft-identity_binary64 unpow-prod-down_binary64
prod-exp_binary64
cbrt-unprod_binary64
pow1_binary64 add-log-exp_binary64 times-frac_binary64 div-inv_binary64 unswap-sqr_binary64 div-exp_binary64 cbrt-undiv_binary64
associate-*l*_binary64
pow1/3_binary64 cbrt-div_binary64 sqr-pow_binary64
pow-to-exp_binary64 pow-exp_binary64 *-commutative_binary64 frac-2neg_binary64 clear-num_binary64 associate-/l*_binary64 associate-/r*_binary64
Counts
4 → 80
Calls

4 calls:

8.0ms
(*.f64 h (pow.f64 (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 d 2))) 4))
6.0ms
(/.f64 (*.f64 M D) (*.f64 d 2))
5.0ms
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 d 2)))
4.0ms
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 d 2)))
Compiler

Compiled 2969 to 1901 computations (36% saved)

series507.0ms (4%)

Error
4.4b
Counts
4 → 39
Calls

4 calls:

227.0ms
(*.f64 h (pow.f64 (cbrt.f64 (/.f64 (*.f64 M D) (*.f64 d 2))) 4))
93.0ms
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 d 2)))
91.0ms
(cbrt.f64 (/.f64 (*.f64 M D) (*.f64 d 2)))
40.0ms
(/.f64 (*.f64 M D) (*.f64 d 2))
Compiler

Compiled 3941 to 3353 computations (14.9% saved)

simplify110.0ms (0.9%)

Algorithm
egg-herbie
Rules
501×associate-/r*_binary64
439×associate-*l/_binary64
341×associate-*r/_binary64
221×exp-prod_binary64
209×associate-/l/_binary64
195×associate-*l*_binary64
180×associate-*r*_binary64
167×times-frac_binary64
147×*-commutative_binary64
123×associate-/r/_binary64
98×exp-diff_binary64 sqr-pow_binary64
94×log-prod_binary64
92×associate-/l*_binary64
76×log-div_binary64
75×sub-neg_binary64
72×exp-sum_binary64 distribute-rgt-in_binary64
61×distribute-lft-in_binary64
41×swap-sqr_binary64
40×unswap-sqr_binary64 cancel-sign-sub-inv_binary64
38×unsub-neg_binary64
35×unpow1/3_binary64 exp-to-pow_binary64
30×div-sub_binary64
25×neg-mul-1_binary64 neg-sub0_binary64
21×*-rgt-identity_binary64
20×distribute-rgt-neg-out_binary64
19×*-lft-identity_binary64
18×distribute-lft-neg-in_binary64 +-commutative_binary64
17×distribute-lft-neg-out_binary64
16×distribute-rgt-neg-in_binary64
15×log-pow_binary64 cube-prod_binary64
14×unpow1/2_binary64 distribute-rgt-out_binary64
13×unpow2_binary64 unpow1_binary64 distribute-neg-out_binary64 distribute-lft-out_binary64
12×associate-+l-_binary64
11×unpow3_binary64 pow-sqr_binary64
10×cube-unmult_binary64
distribute-neg-in_binary64
exp-sqrt_binary64 associate--l-_binary64
pow-plus_binary64 associate--l+_binary64
cube-div_binary64 distribute-rgt-out--_binary64 associate-+r+_binary64
associate--r+_binary64 associate-+l+_binary64
remove-double-neg_binary64 count-2_binary64 associate--r-_binary64
log-rec_binary64 associate-+r-_binary64
exp-neg_binary64 rem-sqrt-square_binary64
1-exp_binary64 exp-1-e_binary64 rem-3cbrt-lft_binary64 rem-square-sqrt_binary64
not-true not-false not-not not-and not-or and-true-l and-true-r and-false-l and-false-r and-same or-true-l or-true-r or-false-l or-false-r or-same erfc-erf_binary64 erf-erfc_binary64 erf-odd_binary64 if-if-and-not_binary64 if-if-and_binary64 if-if-or-not_binary64 if-if-or_binary64 if-not_binary64 if-same_binary64 if-false_binary64 if-true_binary64 not-gte_binary64 not-lte_binary64 not-gt_binary64 not-lt_binary64 gte-same_binary64 lte-same_binary64 gt-same_binary64 lt-same_binary64 sinh---cosh_binary64 sinh-+-cosh_binary64 sinh-cosh_binary64 tanh-def-c_binary64 tanh-def-b_binary64 tanh-def-a_binary64 cosh-def_binary64 sinh-def_binary64 tan-neg_binary64 cos-neg_binary64 sin-neg_binary64 tan-0_binary64 cos-0_binary64 sin-0_binary64 hang-m-tan_binary64 hang-p-tan_binary64 hang-m0-tan_binary64 hang-p0-tan_binary64 hang-0m-tan_binary64 hang-0p-tan_binary64 tan-+PI/2_binary64 tan-+PI_binary64 tan-PI_binary64 tan-PI/3_binary64 tan-PI/4_binary64 tan-PI/6_binary64 cos-+PI/2_binary64 cos-+PI_binary64 cos-PI_binary64 cos-PI/2_binary64 cos-PI/3_binary64 cos-PI/4_binary64 cos-PI/6_binary64 sin-+PI/2_binary64 sin-+PI_binary64 sin-PI_binary64 sin-PI/2_binary64 sin-PI/3_binary64 sin-PI/4_binary64 sin-PI/6_binary64 sub-1-sin_binary64 sub-1-cos_binary64 -1-add-sin_binary64 -1-add-cos_binary64 1-sub-sin_binary64 1-sub-cos_binary64 cos-sin-sum_binary64 log-E_binary64 pow-base-0_binary64 pow-base-1_binary64 unpow0_binary64 unpow-1_binary64 exp-lft-cube_binary64 exp-lft-sqr_binary64 exp-cbrt_binary64 div-exp_binary64 rec-exp_binary64 prod-exp_binary64 e-exp-1_binary64 exp-0_binary64 rem-log-exp_binary64 rem-exp-log_binary64 cube-mult_binary64 cube-neg_binary64 rem-3cbrt-rft_binary64 rem-cbrt-cube_binary64 rem-cube-cbrt_binary64 sqr-abs_binary64 sqr-neg_binary64 mul-1-neg_binary64 /-rgt-identity_binary64 sub0-neg_binary64 --rgt-identity_binary64 +-rgt-identity_binary64 +-lft-identity_binary64 mul0-rgt_binary64 mul0-lft_binary64 div0_binary64 *-inverses_binary64 +-inverses_binary64 lft-mult-inverse_binary64 rgt-mult-inverse_binary64 remove-double-div_binary64 difference-of-sqr--1_binary64 difference-of-sqr-1_binary64 difference-of-squares_binary64 cancel-sign-sub_binary64 distribute-neg-frac_binary64 distribute-frac-neg_binary64 distribute-rgt1-in_binary64 distribute-lft1-in_binary64 distribute-lft-out--_binary64
Counts
119 → 75
Iterations

Useful iterations: 3 (0.0ms)

IterNodesCost
02492383
16132227
218052153
346372103
449882103

prune84.0ms (0.7%)

Pruning

13 alts after pruning (12 fresh and 1 done)

PrunedKeptTotal
New74175
Fresh01111
Picked011
Done000
Total741387
Error
4.2b
Counts
87 → 13
Compiler

Compiled 1238 to 820 computations (33.8% saved)

regimes3.6s (28.6%)

Accuracy

Total 4.2b remaining (49.8%)

Threshold costs 0b (0%)

Compiler

Compiled 49910 to 46285 computations (7.3% saved)

bsearch5.0ms (0%)

Compiler

Compiled 15 to 16 computations (-6.7% saved)

simplify11.0ms (0.1%)

Algorithm
egg-herbie
Rules
30×*-commutative_binary64
18×sub-neg_binary64 +-commutative_binary64
17×neg-mul-1_binary64 neg-sub0_binary64
10×distribute-rgt-neg-in_binary64
distribute-lft-neg-in_binary64
cancel-sign-sub-inv_binary64 distribute-lft-neg-out_binary64
distribute-neg-frac_binary64 distribute-rgt-neg-out_binary64
1-exp_binary64
not-true not-false not-not not-and not-or and-true-l and-true-r and-false-l and-false-r and-same or-true-l or-true-r or-false-l or-false-r or-same if-if-and-not_binary64 if-if-and_binary64 if-if-or-not_binary64 if-if-or_binary64 if-not_binary64 if-same_binary64 if-false_binary64 if-true_binary64 tan-0_binary64 cos-0_binary64 sin-0_binary64 unpow1_binary64 e-exp-1_binary64 exp-1-e_binary64 exp-0_binary64 sqr-abs_binary64 sqr-neg_binary64 unsub-neg_binary64 mul-1-neg_binary64 /-rgt-identity_binary64 *-rgt-identity_binary64 *-lft-identity_binary64 remove-double-neg_binary64 sub0-neg_binary64 --rgt-identity_binary64 +-rgt-identity_binary64 +-lft-identity_binary64 cancel-sign-sub_binary64 distribute-frac-neg_binary64 distribute-neg-out_binary64 distribute-neg-in_binary64
Iterations

Useful iterations: 0 (0.0ms)

IterNodesCost
052189
179189
2112189
3147189
4172189
5186189
6190189
7189189

end17.0ms (0.1%)

Compiler

Compiled 372 to 252 computations (32.3% saved)

sample2.3s (18.3%)

Algorithm
intervals
Results
597.0ms8000×body128valid
221.0ms3057×body128nan
112.0ms1332×body128invalid
Compiler

Compiled 434 to 390 computations (10.1% saved)

Profiling

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