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 30610-dfc8ed42cd) Lines: 2228 2369 94.0 % Date: 2026-01-14 09:22:13 Functions: 174 178 97.8 % Legend: Lines: hit not hit

Function Name	Hit count
Decomp	254669
Flx_checkdeflate	1600869
Flx_radical	1600854
FpX_radical	5693
Fp_basis	312063
FqM_to_nfM	2934
FqV_to_nfV	0
FqX_non_root	21
FqX_to_nfX	10226
Fq_to_nf	3087513
QXQV_to_FpM	203
QpXV_denom	508750
QpX_denom	2749317
QpX_remove_denom	1742765
RgV_nffix	49
RgX_nffix	328101
RgX_to_algX	1666
Rg_nffix	960423
ZX_Dedekind	1538182
ZX_rescale_inv	59933
Z_fac	197
Zlx_gcd	246168
Zlx_sylvester_echelon	4801603
ZpM_hnfmodid	453994
ZpX_disc_val	184471
ZpX_gcd	254676
ZpX_monic_factor	546
ZpX_monic_factor_squarefree	1155
ZpX_primedec	0
ZpX_reduced_resultant	993011
ZpX_reduced_resultant_fast	931873
ZpX_resultant_val	3581983
ZpX_resultant_val_i	3628107
ZpX_round4	896
ZpX_sylvester_echelon	74158
_msqr	4158
_sqr	16190
checkmodpr	210
checkprid	18382738
checkprid_i	23620914
compmod	287141
compositum	91
compositum2	2870
compositum_fix	26658
dbasis	620742
diag_denom	100217
diag_denomval	685894
ei_msqr_mod	352769
errprime	0
expo_is_squarefree	889
fact_from_factors	4235
ffdegree	4109
fill	4222
fix_PE	512
fnz	222840
gc_nf_to_Fq	14188679
gen_if_principal	35
get_LV	216882
get_coprimes	294
get_d	3220
get_g	356367
get_gamma	303289
get_maxord	813220
get_modpr	137753
get_module	63
get_norm	505941
get_nu	641095
get_partial_order_as_pols	508751
get_powers	161554
get_pr	416559
get_prid	939477
getprime	563464
hnf_Znproj	1083965
ideal_is1	8049
idealprimedec	1299633
idealprimedec_degrees	371
idealprimedec_galois	6552
idealprimedec_kummer	3935728
idealprimedec_limit_f	2822324
idealprimedec_limit_norm	507446
indexpartial	44081
init_m	4513783
init_norm	216854
is_uniformizer	505936
lift_to_zk	93673
loop	238592
manage_cache	705984
maxord	1538185
maxord_disc	711232
maxord_i	454889
minval	3776
mk_pr	4396308
modpr_TAU	4050453
modpr_genFq	4508
modprinit	1212570
mul_intersect	712065
mycaract	706042
newtoncharpoly	699207
newtonsums	706048
nfM_to_FqM	1872
nfV_to_FqV	167410
nfXQ_mul	16523
nfX_mul	20667
nfX_rem	16523
nfX_sub	4144
nfX_to_FqX	9415
nfX_to_monic	1680
nfXisintegral	7329
nf_pV_to_prV	38605
nf_pV_to_prVV	26614
nf_to_Fq	12922062
nf_to_Fq_i	14189199
nf_to_Fq_init	4049228
nfbasis	938
nfcompositum	13442
nfcompositum_lambda	511
nfdisc	66464
nfdiscfactors	644783
nfidealdet1	63
nfisintegral	32235
nfmaxord	101985
nfmaxord_check_args	813229
nfmodpr	350
nfmodprinit	7
nfmodprinit0	77
nfmodprlift	77
nfpolisintegral	8253
nfpolisintegral_i	8253
nfreducemodpr	210
ok_modpr	4916196
p_is_prime	2211
pol_min	118929
polcompositum0	12889
poldiscfactors	42
poldiscfactors_i	788753
pow_ei_mod_p	748317
pr_anti_uniformizer	1005829
pr_factorback	4277
pr_factorback_scal	4277
pradical	216877
primedec_aux	2829273
primedec_end	216882
progress	394393
redelt	48553
redelt_i	64349
rnfallbase	3171
rnfbasis	21
rnfdedekind	91
rnfdedekind_i	4172
rnfdet	14
rnfdisc_factored	868
rnfdiscf	77
rnfeltid_powmod	5834
rnfhnfbasis	7
rnfisfree	7
rnfjoinmodules	1329
rnfjoinmodules_i	2111
rnfmaxord	4088
rnfsimplifybasis	0
rnfsteinitz	28
safe_Z_pvalrem	15029
setPE	746697
set_disc	813168
split_char	480329
sqr_mod	830823
testb2	67180
testc2	48553
to_ff_init	4083378
triv_order	1513
uniformizer	299975
update_den	3569285
update_fact	2355
update_phi	276516
vstar	624133
zk_to_Fq	6521169
zk_to_Fq_init	34111
zkmodprinit	175369
zx_z_div	1532478

Generated by: LCOV version 1.16