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 - base4.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30569-8181146aa1) Lines: 1696 1847 91.8 % Date: 2025-12-03 09:22:05 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	5900774
Q_nffactor	28526
Q_to_famat	197190
RM_round_maxrank	98180
ZM_famat_limit	568161
ZV_cba	28
ZV_cba_extend	49
Z_cba	757267
Z_cba_rec	6827597
Z_dcba_rec	0
Z_ppgle	0
Z_ppio	986062
Z_ppo	18840156
Z_to_famat	376422
_idealaddtoone	803330
_idealmulred	28605
_idealsqrred	35761
_mul	11384
_sqr	35761
addmul_mat	66679
append	154198
chk_vdir	21
err_divexact	7
ext_inv	20399
ext_mul	60798
ext_pow	0
ext_sqr	33941
factorbackprime	75591
famatV_factorback	13807
famatV_zv_factorback	56329
famat_Z_gcd	0
famat_add	160828
famat_div	200220
famat_div_shallow	10304
famat_idealfactor	0
famat_inv	199378
famat_inv_shallow	26946
famat_makecoprime	2220975
famat_mul	449710
famat_mul_shallow	225163
famat_mulpow_shallow	88314
famat_mulpows_shallow	147768
famat_pow	60642
famat_pow_shallow	62006
famat_pows_shallow	152131
famat_reduce	306414
famat_remove_trivial	67006
famat_sqr	22979
famat_sub	20981
famat_to_Fp_coprime	693
famat_to_nf	0
famat_to_nf_moddivisor	18606
famatsmall_reduce	189689
get_random_a	117889
gpidealfactor	189
gpidealval	7119
hnf_QC_QC	7
hnf_Q_Q	21
hnf_Q_QC	77
hnf_Z_QC	70
hnf_Z_ZC	77
idealHNF_Z_factor	0
idealHNF_Z_factor_i	294021
idealHNF_factor	240128
idealHNF_factor_i	294021
idealHNF_inv	69876
idealHNF_inv_Z	212142
idealHNF_mul	473735
idealHNF_mul_two	971517
idealHNF_norm_pval	4216825
idealHNF_val	4354609
idealadd	83599
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17633
idealaddtoone_raw	785708
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	54109
idealcoprime	84
idealcoprimefact	37205
idealdiv	39758
idealdiv0	56
idealdivexact	5277
idealdivpowprime	13007
idealdown	3045
idealfactor	268344
idealfactor_limit	268771
idealfactor_partial	25529
idealhnf	665
idealhnf0	413
idealhnf_principal	1391837
idealhnf_shallow	1856097
idealhnf_two	802389
idealintersect	21
idealinv	115845
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3920
idealmin	7
idealmul	512071
idealmul0	70
idealmul_aux	512072
idealmulelt	266235
idealmulpowprime	825364
idealmulred	17221
idealnorm	105812
idealnumden	389787
idealpow	941733
idealpow0	2499
idealpow_aux	941738
idealpowprime	1306008
idealpowred	80283
idealpows	313431
idealprod	1064
idealprodprime	666
idealprodval	1917
idealpseudomin	142652
idealpseudomin_nonscalar	0
idealpseudominvec	1252848
idealpseudored	1344754
idealred0	138764
idealred_elt	13416
idealredmodpower	59205
idealredmodpower_i	118398
idealsqr	39247
idealsqr_aux	39247
idealsqrprime	317428
idealsqrtn_int	7784
idealtwoelt	97614
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	16474426
idealval	9730925
in_ideal	28
isideal	91
lcmuu	1638483
make_integral	10920
mat_ideal_two_elt	250786
mat_ideal_two_elt2	21
matreduce	63
nfV_eltembed	84
nfV_idealhnf	84
nf_coprime_part	126
nf_get_Gtwist	138771
nf_get_Gtwist1	12667
nf_remove_denom_p	4376605
nf_to_Fp_coprime	120036
nfdivmodpr	0
nfkermodpr	0
nfmulmodpr	7
nfpowmodpr	0
nfsolvemodpr	0
nfweilheight	84
nfweilheight_i	84
not_in_ideal	14
ok_elt	225442
p_makecoprime	94901
prV_e_muls	28479
prV_lcm_capZ	80975
prV_primes	66262
pr_hnf	3801812
pr_inv	17847
pr_inv_p	38516
pr_uniformizer	58442
ramified_root	7777
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	123214
to_famat	0
to_famat_shallow	2768211
trivial_merge	28
twistG	12709
u_ppo	54297831
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	15999758
vecpow	0
vecsqr	185983
zk_pvalrem	4330815

Generated by: LCOV version 1.16