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 30735-65f72320ad) Lines: 2227 2369 94.0 % Date: 2026-03-11 09:24:10 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	2204
update_fact	2357
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	6601
nfXisintegral	7329
ideal_is1	8049
nfpolisintegral	8253
nfpolisintegral_i	8253
nfX_to_FqX	9415
FqX_to_nfX	10226
polcompositum0	12895
nfcompositum	13448
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26673
nfisintegral	32235
zk_to_Fq_init	34110
nf_pV_to_prV	38605
indexpartial	44108
redelt	48555
testc2	48555
ZX_rescale_inv	59981
redelt_i	64350
testb2	67189
nfdisc	68901
ZpX_sylvester_echelon	74159
lift_to_zk	93673
diag_denom	100215
nfmaxord	102017
pol_min	118928
get_modpr	137753
get_powers	161551
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184519
init_norm	216858
pradical	216878
get_LV	216880
primedec_end	216880
fnz	222785
loop	238630
Zlx_gcd	246232
Decomp	254736
ZpX_gcd	254736
update_phi	276628
compmod	287180
uniformizer	299980
get_gamma	303296
Fp_basis	312099
RgX_nffix	327958
ei_msqr_mod	352913
get_g	356412
progress	394437
get_pr	416584
ZpM_hnfmodid	454062
maxord_i	454961
split_char	480361
is_uniformizer	505961
get_norm	505963
idealprimedec_limit_norm	507443
QpXV_denom	508869
get_partial_order_as_pols	508873
getprime	563581
dbasis	620937
vstar	624294
get_nu	641247
nfdiscfactors	644788
diag_denomval	686762
newtoncharpoly	699333
manage_cache	706099
mycaract	706141
newtonsums	706148
mul_intersect	712167
maxord_disc	713682
setPE	746800
pow_ei_mod_p	748359
poldiscfactors_i	791310
set_disc	815680
get_maxord	815698
nfmaxord_check_args	815707
sqr_mod	831012
ZpX_reduced_resultant_fast	932099
get_prid	939491
Rg_nffix	960554
ZpX_reduced_resultant	993221
pr_anti_uniformizer	1005839
hnf_Znproj	1083967
modprinit	1212565
idealprimedec	1299754
zx_z_div	1533895
ZX_Dedekind	1539626
maxord	1539627
Flx_radical	1602338
Flx_checkdeflate	1602346
QpX_remove_denom	1742994
QpX_denom	2749760
idealprimedec_limit_f	2822543
primedec_aux	2829507
Fq_to_nf	3087513
update_den	3570127
ZpX_resultant_val	3582616
ZpX_resultant_val_i	3628720
idealprimedec_kummer	3936434
nf_to_Fq_init	4049241
modpr_TAU	4050452
to_ff_init	4083358
mk_pr	4397004
init_m	4514671
Zlx_sylvester_echelon	4802609
ok_modpr	4916183
zk_to_Fq	6521123
nf_to_Fq	12922028
gc_nf_to_Fq	14188645
nf_to_Fq_i	14189158
checkprid	18388057
checkprid_i	23626327

Generated by: LCOV version 1.16