Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - elliptic.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 94.2 % 4183 3940 Test Date: 2026-07-22 22:45:42 Functions: 97.8 % 371 363 Legend: Lines:     hit not hit

Function Name	Hit count
checkell_Qp	0
checkellpt	0
ellintegralbmodel	0
ellprint	0
elltwist_card	0
localredbug	0
point_to_a4a6	0
triv_ser	0
bilhell	7
ch_Fp	7
ch_Rg	7
ellexpo	7
ellnf_isisom	7
CM_factor	14
ellchangeinvert	14
elllseries	14
ellmul_CM	14
ellmul_CM_aux	14
elltaniyama	14
bilhell_i	21
ch_Qp	21
ellQ_bsd	28
ellnf_veceta	28
ellheightpairing	35
min_set_2	35
ellQ_isdivisible	42
ellQ_isdivisible_test	42
ellQ_isisom	42
ellchangecompose_i	42
ellchangevecpt	42
ellnf_bsd	42
myroundr	42
nfrestrict23	42
ellQ_saturation	49
ellchangeinvert_i	49
ellisisom	49
ellnf_charpoly	49
ellnf_vecomega	49
ellsaturation	49
ellnf_volume	56
ellsub	56
bnf_get_v	63
ellnfminimalmodel	63
ellnfminimalmodel_i	63
ellbsd	70
elleulerf	70
ellheightfaltings	70
ellminimaldisc	70
ellpadicheight0	70
elltrace	70
ellQ_charpoly	77
ellneg_i	77
ellQ_tamagawa	84
elltamagawa	84
real_prec	84
ellQ_rootno	91
ellnf_vecarea	91
ellchangecompose	98
ellnf_get_CM	98
ec_phi2	105
ch_Fq	119
ch_FF	126
ellsea	126
to_RgX	126
elllog	140
min_set_3	140
Flv_firstnonzero	147
doellnfrootno	168
ellnf_rootno_global	168
ellnf_vec_wrap	168
elliscm	196
ellinit_Qp	203
ellnfan	203
ellrootno	210
padic_prec	238
ellnf_reladelicvolume	245
ellnf2isog	287
rootnovalp	287
elltatepairing	301
ellanQ	329
ellrnfup	364
ellxn	406
twist2	406
ellminimaltwistcond	434
ellminimaltwist0	448
nf_coordch	483
nf_coordch_rst	483
RgE2_Fp_init	497
ellchangevecptinv	504
ellan	525
ec_dFdy_evalQ	532
neron_3	595
ellff_charpoly	658
akell	693
checkell_int	693
ellminimaltwist	700
ec_half_deriv_2divpol_evalx	707
ellcharpoly	728
apk_good	735
ec_half_deriv_2divpol	812
ellQ_genreduce	833
ellnf_adelicvolume	854
ellnf_bsdperiod	854
ellheightmatrix	861
ellpadicheightmatrix	875
ellnf_tamagawa	882
ellQ_get_Nfa	952
ellminimalbmodel	966
ellchangepointinv	973
Q_to_globalred	980
ellnfglobalred	980
ellnfembed_free	1029
ellchangepointinv0	1036
ellffmul	1080
ellnf_D_primes	1106
ellsatp	1204
ellsatp_mat	1204
ellsupersingularj	1204
ellrootno_3	1428
ellrootno_2	1715
neron_2	1715
ZtoF2	1848
ellintegralmodel	2520
FljV_vecsat_Prickett	2807
ltors_Fl	2807
kod_23	3143
val_init	3143
doellrootno	3332
ellchangeptinv	3402
ellrootno_p	3479
checkellisog	3752
oncurve_exact	3855
ZV_is_ei	4214
ellQ_factorback	4228
QEV_to_ZJV	4460
ellanal_globalred	4641
ellrootno_global	4662
direllnf_worker	4956
elldivpol0	5075
ellweilpairing	5250
ellQ_factorback_chinese	5332
cardmod2	5894
F2_card	5915
ellanQ_zv	6825
ellapQ_zv	6825
cardmod3	7525
F3_card	7665
ellQ_get_N	8092
checkell_Q	8372
FljV_vecsat_Siksek	8631
ellQ_factorback_slice	8741
ellQ_factorback_worker	8741
ellbasechar	9429
val_aux	9429
nb_real_components	9723
ellQ_factorback_filter	10789
FljV_vecsat	11438
ellR_area	11998
sievep_bad	12775
elldivpol	13307
elldivpol4	15246
FljV_changepointinv_pre	15322
ellQ_factorback1	15732
gcomposev	15911
ellgenerators	16849
doellgens	18690
ellff_get_D	18690
ellff_get_m	18690
ellff_get_gens	18767
doellff_get_o	19292
nf_coordch_st	19406
ellff_get_o	19845
ellQtwist_bsdperiod	19859
_hell	20468
ellQ_get_CM	20585
ellapQ_zv_worker	20601
ellgroup0	21490
ellQminimalmodel	21637
ellminimalmodel	21707
ellfromj_simple	22715
nflocalred_section7	27524
ellheight_C	28728
elltwist	28735
prV_merge_factors	28812
ellpointnfembed	28819
ellnf_height	28833
Q_to_minimalprimes	29554
ec_2divpol_evalx	29715
ellnf_minimalnormu	29722
ellnf_c4c6_primes	29771
ellnfembed	29841
ellheightoo	30660
safe_Z_lval	31304
QE_to_ZJ	33680
ellfromj	34020
handle_Q	40495
ellisoncurve	44154
gellisoncurve_i	44294
ellQ_height	52410
ell_is_integral	52788
ellheight0	57659
ellminimalprimes	58660
ellnf_get_nf_prec	58660
nfembed_extraprec	58660
doellR_ab	58842
zk_capZ	60648
point_to_a4a6_Fl	64236
ec_3divpol_evalx	64856
ellinit_Rg	67116
approx_mod3	70308
ellinit_nf	73437
ellheight	81243
ellneg	82076
ellR_ab	83056
ellR_on_neutral	83056
ellR_root	83056
exphellagm	83056
hoo_aux	83056
quad_root	83056
ellnflocal	83773
ellnf_localheight	85211
ch_Q	90748
ch_R	90748
a4a6_ch_Fl	91290
Fq_c4c6_to_a4a6	93269
Fq_c4_to_a4	93274
ellQap	98532
chk_p	99596
ellinit_Fq	114525
ellchangept	116152
ellgroup_m	120715
FF_ellinit_ns	121337
ellisoncurve_i	126027
ellgroup	127806
nflocalred_p	128408
ec_LHS_evalQ	129804
ellchangepoint	132280
ec_dFdx_evalQ	135178
ellinit_nf_to_Fq	137732
ellnf_to_Fq	137753
ch_NF	140574
approx_mod2	140616
doellGm	146454
ellchangepoint0	146924
a4a6_ch	151083
ell_to_a4a6_bc	151083
ellchangetoalg	156933
Q_numer	157580
get_piinv	157675
ellinit_Fp	165734
elljissupersingular	165907
ellissupersingular	166117
ellff_get_group	167307
doellR_roots	170170
ell_to_nfell10	181986
nflocalred_23	181986
ellordinate	183127
ellordinate_i	183127
nf_compose_s	184658
nf_coordch_s	184658
ellff_Gm	185997
ellcard	187095
ellnfap	191595
checkellpts	192114
elllocalred	197085
nfembedall	206843
coordch	213157
fix_nftype	213367
ell_reset	213402
ellR_roots	223301
doellcard	224104
checkell5	228788
ellchangecurve	228788
coordch_uinv	229824
coordch_s	231210
doellR_roots_i	231577
invcmp	236790
ellrandom	246005
ec_bmodel	247915
ellmul_Z	251435
ellmul	251558
checkell_Fq	254244
ell_over_Fq	254244
nflocalred	261233
initsmall46	261822
ellff_get_card	269905
nfVtoalg	273637
nf_coordch_rt	301564
get_uniformizers	310394
ellff_get_p	386399
nf_coordch_t	407583
ellQap_u	407667
nf_compose_u	443723
nf_coordch_uinv	444206
numroots3	473879
nf_compose_r	479434
nf_compose_st	496370
nf_coordch_r	500026
pola1a2	579782
pola2a4a6	592928
nf_compose_rt	594209
_mul	618017
coordch_t	683326
coordch_rst	751128
coordch_st	751128
nf_compose_t	843276
ellglobalred	909685
ellQ_globalred	912184
ellglobalred_i	925421
ellQ_minimalu	959539
ellminimalmodel_i	963319
Z_gcd_primes	989310
min_to_ell	1008322
Zec_h_evalx	1021405
min_get_v	1021405
min_set_all	1021405
min_set_D	1021419
min_set_a	1021440
min_set_b	1021580
ellinit_Q	1023568
pola3a6	1070167
coordch_r	1264669
sievep_good	1266390
ellan_get_ap	1275422
sievep	1279165
min_set_c	1316155
min_set_u	1316155
ellap_CM_fast	1330735
ellinit	1353807
ellinit_i	1354955
is_trivial_change	1357959
localred_23	1362228
ec_f_evalx	1376700
initsmall5	1399013
get_j	1436596
initsmall	1444562
base_ring	1449175
numroots2	1537515
pol2sqrt_23	1627108
Fl_c4c6_to_a4a6	1644666
Fl_ell_to_a4a6	1644916
Fl_c6_to_a6	1645421
get_vp_u	1711836
localred_p	1711836
j_pval	1715315
aux	1723309
Fl_c4_to_a4	1724627
_sqr	1897129
to_mod	1964080
slope_samex	2047903
ec_dmFdy_evalQ	2085330
nftoalg	2127531
elladd	2567640
aux2	2773358
localred	3073588
localred_result	3384458
get_vp_u_small	3484835
ellcard_ram	4780784
ellap	4942625
ell_to_a4a6	4951229
init_ch	5090617
c4_to_a4	5245777
c4c6_to_a4a6	5245790
checkellp	5472356
checkellpt_i	5629166
vecispt	5821196
ec_h_evalx	5993081
ellintegralmodel_i	6117375
checkell	10098577
isptcoord	11376489
handle_coeff	30588212

Generated by: LCOV version 2.0-1