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 30831-19b50a36d0) Lines: 2227 2369 94.0 % Date: 2026-04-20 09:27:00 Functions: 174 178 97.8 % Legend: Lines: hit not hit

Function Name	Hit count
Decomp	254728
Flx_checkdeflate	1602219
Flx_radical	1602193
FpX_radical	5694
Fp_basis	312080
FqM_to_nfM	2934
FqV_to_nfV	0
FqX_non_root	21
FqX_to_nfX	10226
Fq_to_nf	3087511
QXQV_to_FpM	203
QpXV_denom	508857
QpX_denom	2749664
QpX_remove_denom	1742949
RgV_nffix	49
RgX_nffix	327953
RgX_to_algX	1666
Rg_nffix	960552
ZX_Dedekind	1539568
ZX_rescale_inv	59973
Z_fac	197
Zlx_gcd	246223
Zlx_sylvester_echelon	4802369
ZpM_hnfmodid	454055
ZpX_disc_val	184511
ZpX_gcd	254731
ZpX_monic_factor	546
ZpX_monic_factor_squarefree	1155
ZpX_primedec	0
ZpX_reduced_resultant	993170
ZpX_reduced_resultant_fast	932046
ZpX_resultant_val	3582432
ZpX_resultant_val_i	3628606
ZpX_round4	896
ZpX_sylvester_echelon	74156
_msqr	4158
_sqr	16190
checkmodpr	210
checkprid	18387715
checkprid_i	23626705
compmod	287189
compositum	91
compositum2	2870
compositum_fix	26676
dbasis	620911
diag_denom	100207
diag_denomval	686736
ei_msqr_mod	352885
errprime	0
expo_is_squarefree	889
fact_from_factors	4235
ffdegree	4109
fill	4222
fix_PE	512
fnz	222778
gc_nf_to_Fq	14188610
gen_if_principal	35
get_LV	216866
get_coprimes	294
get_d	3220
get_g	356400
get_gamma	303290
get_maxord	815695
get_modpr	137753
get_module	63
get_norm	505886
get_nu	641200
get_partial_order_as_pols	508861
get_powers	161541
get_pr	416561
get_prid	939988
getprime	563546
hnf_Znproj	1083914
ideal_is1	8049
idealprimedec	1299732
idealprimedec_degrees	371
idealprimedec_galois	6601
idealprimedec_kummer	3936260
idealprimedec_limit_f	2822491
idealprimedec_limit_norm	507441
indexpartial	44109
init_m	4514421
init_norm	216838
is_uniformizer	505883
lift_to_zk	93673
loop	238630
manage_cache	706041
maxord	1539569
maxord_disc	713660
maxord_i	454948
minval	3776
mk_pr	4396707
modpr_TAU	4050454
modpr_genFq	4508
modprinit	1212521
mul_intersect	712115
mycaract	706111
newtoncharpoly	699280
newtonsums	706114
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	12921987
nf_to_Fq_i	14189126
nf_to_Fq_init	4049184
nfbasis	938
nfcompositum	13445
nfcompositum_lambda	511
nfdisc	68897
nfdiscfactors	644772
nfidealdet1	63
nfisintegral	32235
nfmaxord	102031
nfmaxord_check_args	815691
nfmodpr	350
nfmodprinit	7
nfmodprinit0	77
nfmodprlift	77
nfpolisintegral	8253
nfpolisintegral_i	8253
nfreducemodpr	210
ok_modpr	4916635
p_is_prime	2205
pol_min	118917
polcompositum0	12892
poldiscfactors	42
poldiscfactors_i	791247
pow_ei_mod_p	748318
pr_anti_uniformizer	1005798
pr_factorback	4277
pr_factorback_scal	4277
pradical	216864
primedec_aux	2829435
primedec_end	216866
progress	394433
redelt	48562
redelt_i	64360
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	746762
set_disc	815658
split_char	480366
sqr_mod	830966
testb2	67186
testc2	48563
to_ff_init	4083315
triv_order	1513
uniformizer	299959
update_den	3569745
update_fact	2356
update_phi	276587
vstar	624249
zk_to_Fq	6521077
zk_to_Fq_init	34110
zkmodprinit	175369
zx_z_div	1533807

Generated by: LCOV version 1.16