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 30625-1bbc371a2f) Lines: 2227 2369 94.0 % Date: 2026-01-23 09:24:12 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	2211
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	5693
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	26659
nfisintegral	32235
zk_to_Fq_init	34111
nf_pV_to_prV	38605
indexpartial	44081
testc2	48559
redelt	48560
ZX_rescale_inv	59941
redelt_i	64351
nfdisc	66462
testb2	67177
ZpX_sylvester_echelon	74152
lift_to_zk	93673
diag_denom	100215
nfmaxord	101971
pol_min	118920
get_modpr	137753
get_powers	161546
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184479
init_norm	216855
pradical	216877
get_LV	216881
primedec_end	216881
fnz	222747
loop	238601
Zlx_gcd	246176
Decomp	254681
ZpX_gcd	254683
update_phi	276493
compmod	287159
uniformizer	299962
get_gamma	303295
Fp_basis	312065
RgX_nffix	328098
ei_msqr_mod	352794
get_g	356377
progress	394409
get_pr	416550
ZpM_hnfmodid	454001
maxord_i	454894
split_char	480342
get_norm	505929
is_uniformizer	505929
idealprimedec_limit_norm	507443
QpXV_denom	508766
get_partial_order_as_pols	508767
getprime	563482
dbasis	620761
vstar	624157
get_nu	641094
nfdiscfactors	644775
diag_denomval	685912
newtoncharpoly	699219
manage_cache	706000
mycaract	706028
newtonsums	706036
maxord_disc	711225
mul_intersect	712075
setPE	746747
pow_ei_mod_p	748318
poldiscfactors_i	788817
set_disc	813182
get_maxord	813204
nfmaxord_check_args	813209
sqr_mod	830853
ZpX_reduced_resultant_fast	931892
get_prid	939477
Rg_nffix	960412
ZpX_reduced_resultant	993018
pr_anti_uniformizer	1005834
hnf_Znproj	1083965
modprinit	1212570
idealprimedec	1299694
zx_z_div	1532528
ZX_Dedekind	1538240
maxord	1538241
Flx_checkdeflate	1600991
Flx_radical	1600992
QpX_remove_denom	1742804
QpX_denom	2749416
idealprimedec_limit_f	2822401
primedec_aux	2829316
Fq_to_nf	3087513
update_den	3569594
ZpX_resultant_val	3582103
ZpX_resultant_val_i	3628176
idealprimedec_kummer	3935840
nf_to_Fq_init	4049266
modpr_TAU	4050462
to_ff_init	4083386
mk_pr	4396407
init_m	4513951
Zlx_sylvester_echelon	4801768
ok_modpr	4916187
zk_to_Fq	6521128
nf_to_Fq	12921647
gc_nf_to_Fq	14188665
nf_to_Fq_i	14189170
checkprid	18382918
checkprid_i	23621095

Generated by: LCOV version 1.16