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 30674-be81ecfdd4) Lines: 2228 2369 94.0 % Date: 2026-02-11 09:23:10 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	2212
update_fact	2355
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	6552
nfXisintegral	7329
ideal_is1	8049
nfpolisintegral	8253
nfpolisintegral_i	8253
nfX_to_FqX	9415
FqX_to_nfX	10226
polcompositum0	12890
nfcompositum	13443
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26657
nfisintegral	32235
zk_to_Fq_init	34111
nf_pV_to_prV	38605
indexpartial	44077
redelt	48553
testc2	48553
ZX_rescale_inv	59937
redelt_i	64345
nfdisc	66463
testb2	67182
ZpX_sylvester_echelon	74155
lift_to_zk	93673
diag_denom	100220
nfmaxord	101962
pol_min	118933
get_modpr	137753
get_powers	161558
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184476
init_norm	216866
pradical	216876
get_LV	216884
primedec_end	216884
fnz	222770
loop	238602
Zlx_gcd	246178
Decomp	254681
ZpX_gcd	254682
update_phi	276478
compmod	287148
uniformizer	299978
get_gamma	303290
Fp_basis	312077
RgX_nffix	328104
ei_msqr_mod	352808
get_g	356368
progress	394399
get_pr	416573
ZpM_hnfmodid	453996
maxord_i	454899
split_char	480330
is_uniformizer	505948
get_norm	505949
idealprimedec_limit_norm	507449
QpXV_denom	508756
get_partial_order_as_pols	508765
getprime	563441
dbasis	620762
vstar	624112
get_nu	641072
nfdiscfactors	644762
diag_denomval	685911
newtoncharpoly	699196
manage_cache	705956
mycaract	705997
newtonsums	706010
maxord_disc	711219
mul_intersect	712109
setPE	746720
pow_ei_mod_p	748332
poldiscfactors_i	788791
get_maxord	813182
set_disc	813184
nfmaxord_check_args	813191
sqr_mod	830872
ZpX_reduced_resultant_fast	931853
get_prid	939477
Rg_nffix	960431
ZpX_reduced_resultant	992990
pr_anti_uniformizer	1005836
hnf_Znproj	1083963
modprinit	1212567
idealprimedec	1299675
zx_z_div	1532499
ZX_Dedekind	1538218
maxord	1538219
Flx_radical	1600910
Flx_checkdeflate	1600916
QpX_remove_denom	1742747
QpX_denom	2749344
idealprimedec_limit_f	2822405
primedec_aux	2829323
Fq_to_nf	3087513
update_den	3569389
ZpX_resultant_val	3582092
ZpX_resultant_val_i	3628156
idealprimedec_kummer	3935808
nf_to_Fq_init	4049292
modpr_TAU	4050488
to_ff_init	4083412
mk_pr	4396450
init_m	4513879
Zlx_sylvester_echelon	4801703
ok_modpr	4916226
zk_to_Fq	6521090
nf_to_Fq	12922023
gc_nf_to_Fq	14188651
nf_to_Fq_i	14189173
checkprid	18382848
checkprid_i	23621041

Generated by: LCOV version 1.16