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 30786-ffec283a2b) Lines: 2227 2369 94.0 % Date: 2026-04-08 09:25:27 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	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	26678
nfisintegral	32235
zk_to_Fq_init	34111
nf_pV_to_prV	38605
indexpartial	44110
testc2	48546
redelt	48548
ZX_rescale_inv	59991
redelt_i	64355
testb2	67194
nfdisc	68897
ZpX_sylvester_echelon	74169
lift_to_zk	93670
diag_denom	100208
nfmaxord	102023
pol_min	118924
get_modpr	137753
get_powers	161549
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184529
init_norm	216842
pradical	216868
get_LV	216871
primedec_end	216871
fnz	222712
loop	238637
Zlx_gcd	246235
Decomp	254744
ZpX_gcd	254745
update_phi	276633
compmod	287183
uniformizer	299967
get_gamma	303306
Fp_basis	312090
RgX_nffix	327964
ei_msqr_mod	352889
get_g	356422
progress	394440
get_pr	416570
ZpM_hnfmodid	454077
maxord_i	454970
split_char	480376
is_uniformizer	505908
get_norm	505918
idealprimedec_limit_norm	507438
QpXV_denom	508887
get_partial_order_as_pols	508889
getprime	563564
dbasis	620926
vstar	624292
get_nu	641261
nfdiscfactors	644770
diag_denomval	686742
newtoncharpoly	699327
manage_cache	706099
mycaract	706162
newtonsums	706165
mul_intersect	712137
maxord_disc	713652
setPE	746744
pow_ei_mod_p	748332
poldiscfactors_i	791256
set_disc	815630
get_maxord	815681
nfmaxord_check_args	815682
sqr_mod	830976
ZpX_reduced_resultant_fast	932132
get_prid	939988
Rg_nffix	960528
ZpX_reduced_resultant	993271
pr_anti_uniformizer	1005819
hnf_Znproj	1083954
modprinit	1212533
idealprimedec	1299786
zx_z_div	1533833
ZX_Dedekind	1539619
maxord	1539619
Flx_radical	1602216
Flx_checkdeflate	1602263
QpX_remove_denom	1742985
QpX_denom	2749783
idealprimedec_limit_f	2822541
primedec_aux	2829505
Fq_to_nf	3087512
update_den	3569919
ZpX_resultant_val	3582535
ZpX_resultant_val_i	3628674
idealprimedec_kummer	3936310
nf_to_Fq_init	4049187
modpr_TAU	4050456
to_ff_init	4083320
mk_pr	4396797
init_m	4514611
Zlx_sylvester_echelon	4802571
ok_modpr	4916647
zk_to_Fq	6521105
nf_to_Fq	12922041
gc_nf_to_Fq	14188673
nf_to_Fq_i	14189193
checkprid	18388005
checkprid_i	23626994

Generated by: LCOV version 1.16