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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30364-8108102770) Lines: 3902 4150 94.0 % Date: 2025-06-30 09:21:07 Functions: 361 369 97.8 % 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
ellQ_isisom	7
ellexpo	7
ellnf_isisom	7
CM_factor	14
ellchangecompose	14
ellchangecompose_i	14
ellchangeinvert	14
ellisisom	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
ellnf_bsd	42
myroundr	42
nfrestrict23	42
ellQ_saturation	49
ellQ_tamagawa	49
ellchangeinvert_i	49
ellnf_charpoly	49
ellnf_vecomega	49
ellsaturation	49
ellsub	49
elltamagawa	49
ellchangevecpt	56
ellnf_get_CM	56
ellnf_volume	56
bnf_get_v	63
ellnfminimalmodel	63
ellnfminimalmodel_i	63
ellbsd	70
elleulerf	70
ellheightfaltings	70
ellminimaldisc	70
ellneg_i	70
ellpadicheight0	70
elltrace	70
ellQ_charpoly	77
real_prec	84
ellQ_rootno	91
ellnf_vecarea	91
ec_phi2	105
ch_Fq	119
ch_FF	126
ellsea	126
to_RgX	126
ellff_charpoly	140
elllog	140
min_set_3	140
Flv_firstnonzero	147
elliscm	154
doellnfrootno	168
ellnf_rootno_global	168
ellnf_vec_wrap	168
ellinit_Qp	203
ellnfan	203
ellcharpoly	210
ellrootno	210
padic_prec	238
ellnf_reladelicvolume	245
ellnf2isog	287
rootnovalp	287
elltatepairing	301
ellanQ	329
ellrnfup	364
_mul	385
twist2	392
ellminimaltwistcond	399
ellxn	406
ellminimaltwist0	448
nf_coordch	483
nf_coordch_rst	483
RgE2_Fp_init	497
ellchangevecptinv	504
ellan	525
ec_dFdy_evalQ	532
neron_3	595
ellminimaltwist	665
akell	693
checkell_int	693
ec_half_deriv_2divpol_evalx	707
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	917
ellminimalbmodel	966
Q_to_globalred	980
ellchangepointinv	980
ellnfglobalred	980
ellnfembed_free	1029
ellchangepointinv0	1043
ellnf_D_primes	1106
_sqr	1190
ellsatp	1204
ellsatp_mat	1204
ellsupersingularj	1204
ellrootno_3	1421
ellrootno_2	1673
neron_2	1673
ZtoF2	1820
ellintegralmodel	2478
FljV_vecsat_Prickett	2807
ltors_Fl	2807
ellordinate	3010
ellordinate_i	3010
kod_23	3094
val_init	3094
doellrootno	3262
ellchangeptinv	3360
ellrootno_p	3374
checkellisog	3528
oncurve_exact	3855
ZV_is_ei	4214
ellQ_factorback	4228
QEV_to_ZJV	4460
ellanal_globalred	4543
ellrootno_global	4592
direllnf_worker	4961
elldivpol0	5075
cardmod2	5138
F2_card	5159
ellweilpairing	5250
ellQ_factorback_chinese	5332
cardmod3	6195
F3_card	6335
ellanQ_zv	6699
ellQ_get_N	8057
checkell_Q	8239
FljV_vecsat_Siksek	8631
ellQ_factorback_slice	8741
ellQ_factorback_worker	8741
ellbasechar	9149
val_aux	9282
nb_real_components	9632
ellQ_factorback_filter	10789
FljV_vecsat	11438
ellR_area	11942
sievep_bad	12544
elldivpol	13125
elldivpol4	15064
FljV_changepointinv_pre	15321
ellQ_factorback1	15732
gcomposev	15743
ellgenerators	16849
doellgens	18690
ellff_get_D	18690
ellff_get_m	18690
ellff_get_gens	18767
doellff_get_o	19292
nf_coordch_st	19406
ellQtwist_bsdperiod	19747
ellff_get_o	19845
ellQ_get_CM	20382
_hell	20468
ellQminimalmodel	21399
ellminimalmodel	21469
ellgroup0	21490
ellfromj_simple	22715
slope_samex	25768
nflocalred_section7	27524
elltwist	28574
ellheight_C	28728
prV_merge_factors	28812
ellpointnfembed	28819
ellnf_height	28833
safe_Z_lval	29386
Q_to_minimalprimes	29554
ec_2divpol_evalx	29715
ellnf_minimalnormu	29722
ellnf_c4c6_primes	29771
ellnfembed	29841
ellheightoo	30660
QE_to_ZJ	33680
ellfromj	34020
handle_Q	40495
ellisoncurve	44128
gellisoncurve_i	44268
ellQ_height	52410
ell_is_integral	52753
elladd	54041
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	67109
approx_mod3	70308
ellinit_nf	73437
ellheight	81243
ellneg	82034
ellR_ab	83056
ellR_on_neutral	83056
ellR_root	83056
exphellagm	83056
hoo_aux	83056
quad_root	83056
ellnflocal	83743
ellnf_localheight	85211
ch_Q	90552
ch_R	90552
a4a6_ch_Fl	91290
Fq_c4c6_to_a4a6	93477
Fq_c4_to_a4	93478
ellQap	98581
chk_p	99625
ellQap_u	111181
ellinit_Fq	114486
ellchangept	116208
coordch_s	119392
ellgroup_m	120715
FF_ellinit_ns	120989
ellisoncurve_i	126001
ellgroup	127806
nflocalred_p	128408
ec_LHS_evalQ	129779
ellchangepoint	132385
ec_dFdx_evalQ	134996
ellinit_nf_to_Fq	137732
ellnf_to_Fq	137753
ch_NF	140574
approx_mod2	140616
doellGm	146454
ellchangepoint0	147022
ell_to_a4a6_bc	150804
a4a6_ch	150806
ellchangetoalg	156926
Q_numer	157580
get_piinv	157675
ellinit_Fp	165225
elljissupersingular	165907
ellissupersingular	166117
ellff_get_group	167307
doellR_roots	169953
ell_to_nfell10	181986
nflocalred_23	181986
nf_compose_s	184658
nf_coordch_s	184658
ellff_Gm	185997
ellcard	186985
ellnfap	191800
checkellpts	192193
initsmall46	194534
elllocalred	197085
nfembedall	206843
coordch	213157
fix_nftype	213367
ell_reset	213402
ellR_roots	223042
doellcard	223483
checkell5	228788
ellchangecurve	228788
coordch_uinv	229656
doellR_roots_i	231360
invcmp	236475
numroots3	245056
ellrandom	245679
ec_bmodel	247495
ec_dmFdy_evalQ	248440
ellffmul	250156
ellmul_Z	251164
ellmul	251227
checkell_Fq	253918
nflocalred	261233
ellff_get_card	269277
nfVtoalg	273595
nf_coordch_rt	301564
get_uniformizers	310394
coordch_t	353486
ellff_get_p	385771
nf_coordch_t	407583
nf_compose_u	443723
nf_coordch_uinv	444206
ellglobalred	454223
ellQ_globalred	456708
ellglobalred_i	469728
nf_compose_r	479434
coordch_rst	489447
coordch_st	489447
nf_compose_st	496370
nf_coordch_r	500026
ellQ_minimalu	503958
ell_over_Fq	505082
ellminimalmodel_i	507570
Z_gcd_primes	533729
min_to_ell	552734
Zec_h_evalx	565817
min_get_v	565817
min_set_all	565817
min_set_D	565831
min_set_a	565852
min_set_b	565992
min_set_c	566139
min_set_u	566139
ellinit_Q	569786
pola1a2	579782
pola2a4a6	592928
nf_compose_rt	594209
checkellpt_i	601525
localred_23	706853
coordch_r	753872
ec_f_evalx	783670
numroots2	790440
vecispt	793634
nf_compose_t	843276
get_vp_u	881468
localred_p	881468
j_pval	884842
aux	891702
ellinit	899589
ellinit_i	900618
is_trivial_change	902028
initsmall5	945019
get_j	982182
initsmall	990225
base_ring	994642
sievep_good	1069698
pola3a6	1070167
ellan_get_ap	1082242
sievep	1082242
ellap_CM_fast	1135064
ec_h_evalx	1166134
aux2	1424346
Fl_c4c6_to_a4a6	1449385
Fl_ell_to_a4a6	1449385
Fl_c6_to_a6	1450033
Fl_c4_to_a4	1529353
isptcoord	1571651
localred	1587901
pol2sqrt_23	1627108
get_vp_u_small	1702557
localred_result	1898715
to_mod	1960431
nftoalg	2127391
ellcard_ram	2422049
ellap	2584067
ell_to_a4a6	2592155
c4c6_to_a4a6	2592307
c4_to_a4	2592308
init_ch	2694013
checkellp	3113168
ellintegralmodel_i	3303309
checkell	4408775
handle_coeff	16516298

Generated by: LCOV version 1.16