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 30862-ea47bd413c) Lines: 2227 2369 94.0 % Date: 2026-05-06 09:26:47 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	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	12896
nfcompositum	13449
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26670
nfisintegral	32235
zk_to_Fq_init	34110
nf_pV_to_prV	38604
indexpartial	44110
redelt	48551
testc2	48551
ZX_rescale_inv	59984
redelt_i	64355
testb2	67193
nfdisc	68899
ZpX_sylvester_echelon	74168
lift_to_zk	93673
diag_denom	100214
nfmaxord	102068
pol_min	118915
get_modpr	137753
get_powers	161540
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184519
init_norm	216834
pradical	216864
get_LV	216866
primedec_end	216866
fnz	222762
loop	238629
Zlx_gcd	246227
ZpX_gcd	254735
Decomp	254737
update_phi	276626
compmod	287181
uniformizer	299952
get_gamma	303315
Fp_basis	312068
RgX_nffix	329563
ei_msqr_mod	352853
get_g	356430
progress	394430
get_pr	416549
ZpM_hnfmodid	454058
maxord_i	454956
split_char	480376
is_uniformizer	505872
get_norm	505873
QpXV_denom	508868
get_partial_order_as_pols	508869
idealprimedec_limit_norm	509468
getprime	563596
dbasis	620923
vstar	624312
get_nu	641257
nfdiscfactors	644785
diag_denomval	686764
newtoncharpoly	699320
manage_cache	706117
newtonsums	706156
mycaract	706165
mul_intersect	712086
maxord_disc	713676
setPE	746799
pow_ei_mod_p	748313
poldiscfactors_i	791312
set_disc	815721
get_maxord	815735
nfmaxord_check_args	815750
sqr_mod	830919
ZpX_reduced_resultant_fast	932092
get_prid	939988
Rg_nffix	966944
ZpX_reduced_resultant	993231
pr_anti_uniformizer	1005816
hnf_Znproj	1084065
modprinit	1212548
idealprimedec	1299784
zx_z_div	1533903
maxord	1539598
ZX_Dedekind	1539599
Flx_radical	1602330
Flx_checkdeflate	1602334
QpX_remove_denom	1742994
QpX_denom	2749759
idealprimedec_limit_f	2824605
primedec_aux	2831555
Fq_to_nf	3087512
update_den	3570067
ZpX_resultant_val	3584019
ZpX_resultant_val_i	3630157
idealprimedec_kummer	3938190
nf_to_Fq_init	4049260
modpr_TAU	4050493
to_ff_init	4083378
mk_pr	4398664
init_m	4516054
Zlx_sylvester_echelon	4803957
ok_modpr	4916701
zk_to_Fq	6521112
nf_to_Fq	12922058
gc_nf_to_Fq	14188681
nf_to_Fq_i	14189191
checkprid	18388281
checkprid_i	23628982

Generated by: LCOV version 1.16