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 - base2.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30764-6b81f1f3fa) Lines: 2227 2369 94.0 % Date: 2026-03-26 09:27:02 Functions: 174 178 97.8 % Legend: Lines: hit not hit

Function Name	Hit count
FqV_to_nfV	0
ZpX_primedec	0
errprime	0
rnfsimplifybasis	0
nfmodprinit	7
rnfhnfbasis	7
rnfisfree	7
rnfdet	14
FqX_non_root	21
rnfbasis	21
rnfsteinitz	28
gen_if_principal	35
poldiscfactors	42
RgV_nffix	49
get_module	63
nfidealdet1	63
nfmodprinit0	77
nfmodprlift	77
rnfdiscf	77
compositum	91
rnfdedekind	91
Z_fac	197
QXQV_to_FpM	203
checkmodpr	210
nfreducemodpr	210
get_coprimes	294
nfmodpr	350
idealprimedec_degrees	371
nfcompositum_lambda	511
fix_PE	512
ZpX_monic_factor	546
rnfdisc_factored	868
expo_is_squarefree	889
ZpX_round4	896
nfbasis	938
ZpX_monic_factor_squarefree	1155
rnfjoinmodules	1329
triv_order	1513
RgX_to_algX	1666
nfX_to_monic	1680
nfM_to_FqM	1872
rnfjoinmodules_i	2111
p_is_prime	2205
update_fact	2356
compositum2	2870
FqM_to_nfM	2934
rnfallbase	3171
get_d	3220
minval	3776
rnfmaxord	4088
ffdegree	4109
nfX_sub	4144
_msqr	4158
rnfdedekind_i	4172
fill	4222
fact_from_factors	4235
pr_factorback	4277
pr_factorback_scal	4277
modpr_genFq	4508
FpX_radical	5694
rnfeltid_powmod	5834
idealprimedec_galois	6601
nfXisintegral	7329
ideal_is1	8049
nfpolisintegral	8253
nfpolisintegral_i	8253
nfX_to_FqX	9415
FqX_to_nfX	10226
polcompositum0	12900
nfcompositum	13453
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26674
nfisintegral	32235
zk_to_Fq_init	34111
nf_pV_to_prV	38605
indexpartial	44109
testc2	48548
redelt	48549
ZX_rescale_inv	59978
redelt_i	64351
testb2	67190
nfdisc	68898
ZpX_sylvester_echelon	74169
lift_to_zk	93671
diag_denom	100222
nfmaxord	102020
pol_min	118922
get_modpr	137753
get_powers	161548
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184526
init_norm	216853
pradical	216875
primedec_end	216877
get_LV	216878
fnz	222763
loop	238630
Zlx_gcd	246233
Decomp	254741
ZpX_gcd	254741
update_phi	276626
compmod	287176
uniformizer	299970
get_gamma	303314
Fp_basis	312087
RgX_nffix	327962
ei_msqr_mod	352889
get_g	356427
progress	394440
get_pr	416576
ZpM_hnfmodid	454064
maxord_i	454959
split_char	480369
get_norm	505877
is_uniformizer	505918
idealprimedec_limit_norm	507442
QpXV_denom	508886
get_partial_order_as_pols	508886
getprime	563585
dbasis	620938
vstar	624295
get_nu	641259
nfdiscfactors	644781
diag_denomval	686743
newtoncharpoly	699344
manage_cache	706117
mycaract	706152
newtonsums	706159
mul_intersect	712136
maxord_disc	713672
setPE	746787
pow_ei_mod_p	748350
poldiscfactors_i	791285
set_disc	815652
get_maxord	815691
nfmaxord_check_args	815698
sqr_mod	830977
ZpX_reduced_resultant_fast	932113
get_prid	939974
Rg_nffix	960552
ZpX_reduced_resultant	993256
pr_anti_uniformizer	1005847
hnf_Znproj	1083968
modprinit	1212518
idealprimedec	1299782
zx_z_div	1533916
ZX_Dedekind	1539646
maxord	1539647
Flx_checkdeflate	1602363
Flx_radical	1602364
QpX_remove_denom	1743003
QpX_denom	2749805
idealprimedec_limit_f	2822577
primedec_aux	2829547
Fq_to_nf	3087513
update_den	3570177
ZpX_resultant_val	3582639
ZpX_resultant_val_i	3628774
idealprimedec_kummer	3936392
nf_to_Fq_init	4049246
modpr_TAU	4050467
to_ff_init	4083377
mk_pr	4396926
init_m	4514703
Zlx_sylvester_echelon	4802619
ok_modpr	4916686
zk_to_Fq	6521096
nf_to_Fq	12922022
gc_nf_to_Fq	14188644
nf_to_Fq_i	14189157
checkprid	18387868
checkprid_i	23626946

Generated by: LCOV version 1.16