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: 2026-03-23 09:27:26 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	12897
nfcompositum	13450
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26677
nfisintegral	32235
zk_to_Fq_init	34111
nf_pV_to_prV	38605
indexpartial	44107
redelt	48560
testc2	48560
ZX_rescale_inv	59978
redelt_i	64360
testb2	67197
nfdisc	68901
ZpX_sylvester_echelon	74163
lift_to_zk	93672
diag_denom	100215
nfmaxord	102026
pol_min	118923
get_modpr	137753
get_powers	161548
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184511
init_norm	216853
get_LV	216868
primedec_end	216868
pradical	216871
fnz	222821
loop	238643
Zlx_gcd	246229
Decomp	254733
ZpX_gcd	254734
update_phi	276633
compmod	287202
uniformizer	299961
get_gamma	303313
Fp_basis	312091
RgX_nffix	327956
ei_msqr_mod	352893
get_g	356422
progress	394455
get_pr	416569
ZpM_hnfmodid	454077
maxord_i	454963
split_char	480391
is_uniformizer	505896
get_norm	505900
idealprimedec_limit_norm	507439
QpXV_denom	508871
get_partial_order_as_pols	508872
getprime	563597
dbasis	620938
vstar	624309
get_nu	641264
nfdiscfactors	644771
diag_denomval	686759
newtoncharpoly	699362
manage_cache	706147
mycaract	706183
newtonsums	706190
mul_intersect	712143
maxord_disc	713669
setPE	746800
pow_ei_mod_p	748341
poldiscfactors_i	791305
set_disc	815653
nfmaxord_check_args	815689
get_maxord	815693
sqr_mod	830970
ZpX_reduced_resultant_fast	932149
get_prid	939974
Rg_nffix	960551
ZpX_reduced_resultant	993270
pr_anti_uniformizer	1005834
hnf_Znproj	1083944
modprinit	1212552
idealprimedec	1299767
zx_z_div	1533919
ZX_Dedekind	1539627
maxord	1539627
Flx_radical	1602369
Flx_checkdeflate	1602378
QpX_remove_denom	1743083
QpX_denom	2749834
idealprimedec_limit_f	2822523
primedec_aux	2829475
Fq_to_nf	3087512
update_den	3570253
ZpX_resultant_val	3582602
ZpX_resultant_val_i	3628727
idealprimedec_kummer	3936348
nf_to_Fq_init	4049261
modpr_TAU	4050449
to_ff_init	4083388
mk_pr	4396909
init_m	4514689
Zlx_sylvester_echelon	4802598
ok_modpr	4916696
zk_to_Fq	6521101
nf_to_Fq	12922059
gc_nf_to_Fq	14188690
nf_to_Fq_i	14189203
checkprid	18387854
checkprid_i	23626811

Generated by: LCOV version 1.16