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 30748-2ce22a5f1f) Lines: 2227 2369 94.0 % Date: 2026-03-18 09:25:54 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	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	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	12898
nfcompositum	13452
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26676
nfisintegral	32235
zk_to_Fq_init	34111
nf_pV_to_prV	38605
indexpartial	44107
redelt	48553
testc2	48553
ZX_rescale_inv	59984
redelt_i	64354
testb2	67184
nfdisc	68898
ZpX_sylvester_echelon	74162
lift_to_zk	93673
diag_denom	100208
nfmaxord	102001
pol_min	118919
get_modpr	137753
get_powers	161545
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184518
init_norm	216850
pradical	216872
get_LV	216874
primedec_end	216874
fnz	222760
loop	238627
Zlx_gcd	246230
Decomp	254736
ZpX_gcd	254737
update_phi	276583
compmod	287177
uniformizer	299961
get_gamma	303290
Fp_basis	312085
RgX_nffix	327958
ei_msqr_mod	352890
get_g	356407
progress	394419
get_pr	416566
ZpM_hnfmodid	454059
maxord_i	454950
split_char	480367
is_uniformizer	505923
get_norm	505930
idealprimedec_limit_norm	507445
QpXV_denom	508873
get_partial_order_as_pols	508876
getprime	563540
dbasis	620919
vstar	624261
get_nu	641210
nfdiscfactors	644783
diag_denomval	686746
newtoncharpoly	699288
manage_cache	706063
mycaract	706107
newtonsums	706114
mul_intersect	712131
maxord_disc	713674
setPE	746766
pow_ei_mod_p	748344
poldiscfactors_i	791268
set_disc	815674
get_maxord	815678
nfmaxord_check_args	815690
sqr_mod	830984
ZpX_reduced_resultant_fast	932048
get_prid	939974
Rg_nffix	960560
ZpX_reduced_resultant	993162
pr_anti_uniformizer	1005810
hnf_Znproj	1083923
modprinit	1212521
idealprimedec	1299766
zx_z_div	1533869
ZX_Dedekind	1539616
maxord	1539618
Flx_radical	1602292
Flx_checkdeflate	1602293
QpX_remove_denom	1742939
QpX_denom	2749713
idealprimedec_limit_f	2822541
primedec_aux	2829501
Fq_to_nf	3087512
update_den	3569870
ZpX_resultant_val	3582566
ZpX_resultant_val_i	3628678
idealprimedec_kummer	3936353
nf_to_Fq_init	4049214
modpr_TAU	4050460
to_ff_init	4083327
mk_pr	4396829
init_m	4514568
Zlx_sylvester_echelon	4802450
ok_modpr	4916641
zk_to_Fq	6521073
nf_to_Fq	12921991
gc_nf_to_Fq	14188613
nf_to_Fq_i	14189126
checkprid	18388012
checkprid_i	23626922

Generated by: LCOV version 1.16