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 30674-be81ecfdd4) Lines: 2227 2369 94.0 % Date: 2026-02-10 09:23:17 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	2210
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	12890
nfcompositum	13443
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26654
nfisintegral	32235
zk_to_Fq_init	34110
nf_pV_to_prV	38605
indexpartial	44080
redelt	48560
testc2	48560
ZX_rescale_inv	59930
redelt_i	64353
nfdisc	66463
testb2	67183
ZpX_sylvester_echelon	74159
lift_to_zk	93673
diag_denom	100216
nfmaxord	101980
pol_min	118935
get_modpr	137753
get_powers	161560
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184479
init_norm	216859
pradical	216884
get_LV	216889
primedec_end	216890
fnz	222747
loop	238605
Zlx_gcd	246175
Decomp	254683
ZpX_gcd	254684
update_phi	276504
compmod	287164
uniformizer	299988
get_gamma	303309
Fp_basis	312081
RgX_nffix	328102
ei_msqr_mod	352808
get_g	356380
progress	394406
get_pr	416580
ZpM_hnfmodid	454003
maxord_i	454893
split_char	480342
get_norm	505928
is_uniformizer	505954
idealprimedec_limit_norm	507437
QpXV_denom	508770
get_partial_order_as_pols	508770
getprime	563468
dbasis	620759
vstar	624139
get_nu	641103
nfdiscfactors	644787
diag_denomval	685902
newtoncharpoly	699245
manage_cache	706020
mycaract	706055
newtonsums	706063
maxord_disc	711243
mul_intersect	712117
setPE	746748
pow_ei_mod_p	748341
poldiscfactors_i	788811
set_disc	813213
get_maxord	813221
nfmaxord_check_args	813230
sqr_mod	830881
ZpX_reduced_resultant_fast	931918
get_prid	939477
Rg_nffix	960426
ZpX_reduced_resultant	993031
pr_anti_uniformizer	1005843
hnf_Znproj	1083964
modprinit	1212553
idealprimedec	1299698
zx_z_div	1532529
maxord	1538221
ZX_Dedekind	1538222
Flx_checkdeflate	1600947
Flx_radical	1600954
QpX_remove_denom	1742835
QpX_denom	2749449
idealprimedec_limit_f	2822416
primedec_aux	2829326
Fq_to_nf	3087513
update_den	3569601
ZpX_resultant_val	3582028
ZpX_resultant_val_i	3628135
idealprimedec_kummer	3935815
nf_to_Fq_init	4049246
modpr_TAU	4050462
to_ff_init	4083369
mk_pr	4396344
init_m	4513905
Zlx_sylvester_echelon	4801746
ok_modpr	4916189
zk_to_Fq	6521120
nf_to_Fq	12922048
gc_nf_to_Fq	14188679
nf_to_Fq_i	14189200
checkprid	18382692
checkprid_i	23620839

Generated by: LCOV version 1.16