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 30764-6b81f1f3fa) Lines: 2227 2369 94.0 % Date: 2026-03-25 09:26:52 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	2206
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	12899
nfcompositum	13452
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	38605
indexpartial	44108
redelt	48553
testc2	48553
ZX_rescale_inv	59975
redelt_i	64355
testb2	67195
nfdisc	68898
ZpX_sylvester_echelon	74166
lift_to_zk	93673
diag_denom	100208
nfmaxord	102025
pol_min	118920
get_modpr	137753
get_powers	161543
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184521
init_norm	216857
pradical	216873
get_LV	216874
primedec_end	216874
fnz	222732
loop	238638
Zlx_gcd	246231
Decomp	254737
ZpX_gcd	254739
update_phi	276587
compmod	287189
uniformizer	299969
get_gamma	303311
Fp_basis	312085
RgX_nffix	327963
ei_msqr_mod	352887
get_g	356424
progress	394438
get_pr	416577
ZpM_hnfmodid	454072
maxord_i	454966
split_char	480400
is_uniformizer	505928
get_norm	505929
idealprimedec_limit_norm	507445
QpXV_denom	508876
get_partial_order_as_pols	508881
getprime	563555
dbasis	620933
vstar	624264
get_nu	641240
nfdiscfactors	644785
diag_denomval	686757
newtoncharpoly	699338
manage_cache	706104
mycaract	706139
newtonsums	706145
mul_intersect	712131
maxord_disc	713672
setPE	746790
pow_ei_mod_p	748342
poldiscfactors_i	791284
set_disc	815662
get_maxord	815696
nfmaxord_check_args	815705
sqr_mod	830975
ZpX_reduced_resultant_fast	932082
get_prid	939974
Rg_nffix	960565
ZpX_reduced_resultant	993209
pr_anti_uniformizer	1005838
hnf_Znproj	1083969
modprinit	1212552
idealprimedec	1299797
zx_z_div	1533909
ZX_Dedekind	1539625
maxord	1539628
Flx_radical	1602351
Flx_checkdeflate	1602354
QpX_remove_denom	1743032
QpX_denom	2749807
idealprimedec_limit_f	2822590
primedec_aux	2829557
Fq_to_nf	3087512
update_den	3570166
ZpX_resultant_val	3582648
ZpX_resultant_val_i	3628790
idealprimedec_kummer	3936450
nf_to_Fq_init	4049272
modpr_TAU	4050471
to_ff_init	4083392
mk_pr	4397022
init_m	4514687
Zlx_sylvester_echelon	4802598
ok_modpr	4916699
zk_to_Fq	6521080
nf_to_Fq	12922022
gc_nf_to_Fq	14188646
nf_to_Fq_i	14189166
checkprid	18387950
checkprid_i	23627007

Generated by: LCOV version 1.16