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: 2026-04-21 09:26:02 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	2205
update_fact	2356
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	12899
nfcompositum	13452
safe_Z_pvalrem	15029
_sqr	16190
nfXQ_mul	16523
nfX_rem	16523
nfX_mul	20667
nf_pV_to_prVV	26614
compositum_fix	26678
nfisintegral	32235
zk_to_Fq_init	34111
nf_pV_to_prV	38604
indexpartial	44109
redelt	48553
testc2	48553
ZX_rescale_inv	59990
redelt_i	64356
testb2	67197
nfdisc	68901
ZpX_sylvester_echelon	74166
lift_to_zk	93673
diag_denom	100209
nfmaxord	102028
pol_min	118928
get_modpr	137753
get_powers	161553
nfV_to_FqV	167410
zkmodprinit	175369
ZpX_disc_val	184508
init_norm	216843
pradical	216868
primedec_end	216869
get_LV	216870
fnz	222748
loop	238640
Zlx_gcd	246234
Decomp	254741
ZpX_gcd	254742
update_phi	276637
compmod	287193
uniformizer	299975
get_gamma	303312
Fp_basis	312095
RgX_nffix	327965
ei_msqr_mod	352900
get_g	356435
progress	394435
get_pr	416579
ZpM_hnfmodid	454076
maxord_i	454964
split_char	480390
is_uniformizer	505922
get_norm	505933
idealprimedec_limit_norm	507442
QpXV_denom	508885
get_partial_order_as_pols	508887
getprime	563598
dbasis	620912
vstar	624329
get_nu	641270
nfdiscfactors	644775
diag_denomval	686729
newtoncharpoly	699353
manage_cache	706102
newtonsums	706172
mycaract	706174
mul_intersect	712157
maxord_disc	713666
setPE	746718
pow_ei_mod_p	748337
poldiscfactors_i	791261
set_disc	815670
get_maxord	815688
nfmaxord_check_args	815701
sqr_mod	830986
ZpX_reduced_resultant_fast	932125
get_prid	939988
Rg_nffix	960575
ZpX_reduced_resultant	993259
pr_anti_uniformizer	1005799
hnf_Znproj	1083913
modprinit	1212524
idealprimedec	1299754
zx_z_div	1533849
ZX_Dedekind	1539603
maxord	1539604
Flx_radical	1602232
Flx_checkdeflate	1602259
QpX_remove_denom	1743032
QpX_denom	2749814
idealprimedec_limit_f	2822528
primedec_aux	2829478
Fq_to_nf	3087513
update_den	3569977
ZpX_resultant_val	3582532
ZpX_resultant_val_i	3628726
idealprimedec_kummer	3936322
nf_to_Fq_init	4049185
modpr_TAU	4050453
to_ff_init	4083316
mk_pr	4396801
init_m	4514584
Zlx_sylvester_echelon	4802540
ok_modpr	4916642
zk_to_Fq	6521113
nf_to_Fq	12922013
gc_nf_to_Fq	14188638
nf_to_Fq_i	14189149
checkprid	18387854
checkprid_i	23626867

Generated by: LCOV version 1.16