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

Generated by: LCOV version 2.0-1