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 30835-e55edf4b45) Lines: 2227 2369 94.0 % Date: 2026-04-26 09:26:37 Functions: 174 178 97.8 % Legend: Lines: hit not hit

Function Name	Hit count
Decomp	254733
Flx_checkdeflate	1602307
Flx_radical	1602297
FpX_radical	5693
Fp_basis	312093
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	508870
QpX_denom	2749650
QpX_remove_denom	1742909
RgV_nffix	49
RgX_nffix	327962
RgX_to_algX	1666
Rg_nffix	960565
ZX_Dedekind	1539592
ZX_rescale_inv	59980
Z_fac	197
Zlx_gcd	246230
Zlx_sylvester_echelon	4802401
ZpM_hnfmodid	454056
ZpX_disc_val	184513
ZpX_gcd	254737
ZpX_monic_factor	546
ZpX_monic_factor_squarefree	1155
ZpX_primedec	0
ZpX_reduced_resultant	993175
ZpX_reduced_resultant_fast	932072
ZpX_resultant_val	3582472
ZpX_resultant_val_i	3628657
ZpX_round4	896
ZpX_sylvester_echelon	74163
_msqr	4158
_sqr	16190
checkmodpr	210
checkprid	18387861
checkprid_i	23626773
compmod	287174
compositum	91
compositum2	2870
compositum_fix	26672
dbasis	620920
diag_denom	100211
diag_denomval	686750
ei_msqr_mod	352896
errprime	0
expo_is_squarefree	889
fact_from_factors	4235
ffdegree	4109
fill	4222
fix_PE	512
fnz	222815
gc_nf_to_Fq	14188630
gen_if_principal	35
get_LV	216865
get_coprimes	294
get_d	3220
get_g	356418
get_gamma	303302
get_maxord	815701
get_modpr	137753
get_module	63
get_norm	505905
get_nu	641214
get_partial_order_as_pols	508873
get_powers	161551
get_pr	416570
get_prid	939988
getprime	563554
hnf_Znproj	1083953
ideal_is1	8049
idealprimedec	1299763
idealprimedec_degrees	371
idealprimedec_galois	6601
idealprimedec_kummer	3936342
idealprimedec_limit_f	2822541
idealprimedec_limit_norm	507444
indexpartial	44107
init_m	4514474
init_norm	216829
is_uniformizer	505896
lift_to_zk	93673
loop	238627
manage_cache	706045
maxord	1539594
maxord_disc	713669
maxord_i	454954
minval	3776
mk_pr	4396811
modpr_TAU	4050486
modpr_genFq	4508
modprinit	1212552
mul_intersect	712151
mycaract	706095
newtoncharpoly	699268
newtonsums	706108
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	12922002
nf_to_Fq_i	14189150
nf_to_Fq_init	4049233
nfbasis	938
nfcompositum	13448
nfcompositum_lambda	511
nfdisc	68898
nfdiscfactors	644780
nfidealdet1	63
nfisintegral	32235
nfmaxord	102028
nfmaxord_check_args	815702
nfmodpr	350
nfmodprinit	7
nfmodprinit0	77
nfmodprlift	77
nfpolisintegral	8253
nfpolisintegral_i	8253
nfreducemodpr	210
ok_modpr	4916682
p_is_prime	2206
pol_min	118925
polcompositum0	12895
poldiscfactors	42
poldiscfactors_i	791250
pow_ei_mod_p	748334
pr_anti_uniformizer	1005818
pr_factorback	4277
pr_factorback_scal	4277
pradical	216869
primedec_aux	2829491
primedec_end	216866
progress	394426
redelt	48551
redelt_i	64354
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	746752
set_disc	815682
split_char	480352
sqr_mod	830980
testb2	67190
testc2	48551
to_ff_init	4083356
triv_order	1513
uniformizer	299968
update_den	3569742
update_fact	2357
update_phi	276604
vstar	624265
zk_to_Fq	6521028
zk_to_Fq_init	34111
zkmodprinit	175369
zx_z_div	1533876

Generated by: LCOV version 1.16