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 30719-2b7f142d49) Lines: 2227 2369 94.0 % Date: 2026-03-01 09:23:56 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	2209
update_fact	2355
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	5693
rnfeltid_powmod	5834
idealprimedec_galois	6552
nfXisintegral	7329
ideal_is1	8049
nfpolisintegral	8253
nfpolisintegral_i	8253
nfX_to_FqX	9415
FqX_to_nfX	10226
polcompositum0	12891
nfcompositum	13444
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26663
nfisintegral	32235
zk_to_Fq_init	34111
nf_pV_to_prV	38605
indexpartial	44079
redelt	48559
testc2	48559
ZX_rescale_inv	59932
redelt_i	64349
nfdisc	66464
testb2	67177
ZpX_sylvester_echelon	74149
lift_to_zk	93673
diag_denom	100208
nfmaxord	101967
pol_min	118931
get_modpr	137753
get_powers	161557
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184473
init_norm	216869
pradical	216884
primedec_end	216885
get_LV	216886
fnz	222787
loop	238590
Zlx_gcd	246169
Decomp	254672
ZpX_gcd	254674
update_phi	276528
compmod	287146
uniformizer	299983
get_gamma	303286
Fp_basis	312076
RgX_nffix	328097
ei_msqr_mod	352813
get_g	356363
progress	394401
get_pr	416575
ZpM_hnfmodid	453988
maxord_i	454889
split_char	480326
is_uniformizer	505970
get_norm	505973
idealprimedec_limit_norm	507447
get_partial_order_as_pols	508741
QpXV_denom	508743
getprime	563487
dbasis	620761
vstar	624147
get_nu	641113
nfdiscfactors	644785
diag_denomval	685907
newtoncharpoly	699253
manage_cache	706028
mycaract	706055
newtonsums	706056
maxord_disc	711240
mul_intersect	712103
setPE	746736
pow_ei_mod_p	748348
poldiscfactors_i	788795
set_disc	813183
get_maxord	813208
nfmaxord_check_args	813222
sqr_mod	830885
ZpX_reduced_resultant_fast	931923
get_prid	939491
Rg_nffix	960411
ZpX_reduced_resultant	993038
pr_anti_uniformizer	1005822
hnf_Znproj	1083958
modprinit	1212553
idealprimedec	1299688
zx_z_div	1532509
maxord	1538210
ZX_Dedekind	1538211
Flx_radical	1600905
Flx_checkdeflate	1600909
QpX_remove_denom	1742801
QpX_denom	2749344
idealprimedec_limit_f	2822420
primedec_aux	2829326
Fq_to_nf	3087512
update_den	3569471
ZpX_resultant_val	3582084
ZpX_resultant_val_i	3628179
idealprimedec_kummer	3935856
nf_to_Fq_init	4049257
modpr_TAU	4050488
to_ff_init	4083375
mk_pr	4396413
init_m	4513955
Zlx_sylvester_echelon	4801748
ok_modpr	4916206
zk_to_Fq	6521131
nf_to_Fq	12922043
gc_nf_to_Fq	14188666
nf_to_Fq_i	14189172
checkprid	18382707
checkprid_i	23620951

Generated by: LCOV version 1.16