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 30831-19b50a36d0) Lines: 2227 2369 94.0 % Date: 2026-04-22 09:25:48 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	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	12897
nfcompositum	13450
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26675
nfisintegral	32235
zk_to_Fq_init	34111
nf_pV_to_prV	38604
indexpartial	44109
redelt	48551
testc2	48551
ZX_rescale_inv	59983
redelt_i	64349
testb2	67187
nfdisc	68900
ZpX_sylvester_echelon	74159
lift_to_zk	93673
diag_denom	100215
nfmaxord	102030
pol_min	118926
get_modpr	137753
get_powers	161551
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184522
init_norm	216852
get_LV	216873
pradical	216874
primedec_end	216875
fnz	222775
loop	238623
Zlx_gcd	246227
Decomp	254734
ZpX_gcd	254734
update_phi	276616
compmod	287175
uniformizer	299973
get_gamma	303283
Fp_basis	312093
RgX_nffix	327953
ei_msqr_mod	352896
get_g	356400
progress	394427
get_pr	416578
ZpM_hnfmodid	454056
maxord_i	454959
split_char	480353
is_uniformizer	505916
get_norm	505923
idealprimedec_limit_norm	507434
QpXV_denom	508869
get_partial_order_as_pols	508869
getprime	563548
dbasis	620932
vstar	624266
get_nu	641222
nfdiscfactors	644766
diag_denomval	686758
newtoncharpoly	699289
manage_cache	706080
newtonsums	706125
mycaract	706126
mul_intersect	712152
maxord_disc	713657
setPE	746767
pow_ei_mod_p	748351
poldiscfactors_i	791271
set_disc	815682
get_maxord	815684
nfmaxord_check_args	815694
sqr_mod	830994
ZpX_reduced_resultant_fast	932089
get_prid	939988
Rg_nffix	960531
ZpX_reduced_resultant	993218
pr_anti_uniformizer	1005828
hnf_Znproj	1083954
modprinit	1212550
idealprimedec	1299777
zx_z_div	1533860
ZX_Dedekind	1539597
maxord	1539598
Flx_radical	1602284
Flx_checkdeflate	1602296
QpX_remove_denom	1742971
QpX_denom	2749723
idealprimedec_limit_f	2822551
primedec_aux	2829509
Fq_to_nf	3087511
update_den	3569881
ZpX_resultant_val	3582529
ZpX_resultant_val_i	3628691
idealprimedec_kummer	3936342
nf_to_Fq_init	4049200
modpr_TAU	4050446
to_ff_init	4083321
mk_pr	4396837
init_m	4514562
Zlx_sylvester_echelon	4802491
ok_modpr	4916648
zk_to_Fq	6521045
nf_to_Fq	12921978
gc_nf_to_Fq	14188589
nf_to_Fq_i	14189110
checkprid	18387866
checkprid_i	23626803

Generated by: LCOV version 1.16