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: 1697 1847 91.9 % Date: 2025-12-04 09:22:12 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	5900600
Q_nffactor	28521
Q_to_famat	197189
RM_round_maxrank	98181
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	18840099
Z_to_famat	376417
_idealaddtoone	803346
_idealmulred	28605
_idealsqrred	35763
_mul	11384
_sqr	35763
addmul_mat	66847
append	154201
chk_vdir	21
err_divexact	7
ext_inv	20404
ext_mul	60803
ext_pow	0
ext_sqr	33943
factorbackprime	75598
famatV_factorback	13807
famatV_zv_factorback	56329
famat_Z_gcd	0
famat_add	160832
famat_div	200215
famat_div_shallow	10304
famat_idealfactor	0
famat_inv	199379
famat_inv_shallow	26945
famat_makecoprime	2220973
famat_mul	449712
famat_mul_shallow	225176
famat_mulpow_shallow	88322
famat_mulpows_shallow	147770
famat_pow	60642
famat_pow_shallow	62014
famat_pows_shallow	152134
famat_reduce	306414
famat_remove_trivial	67007
famat_sqr	22981
famat_sub	20980
famat_to_Fp_coprime	693
famat_to_nf	0
famat_to_nf_moddivisor	18606
famatsmall_reduce	189690
get_random_a	117887
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	294035
idealHNF_factor	240132
idealHNF_factor_i	294036
idealHNF_inv	69877
idealHNF_inv_Z	212153
idealHNF_mul	473746
idealHNF_mul_two	971528
idealHNF_norm_pval	4216895
idealHNF_val	4354667
idealadd	83599
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17633
idealaddtoone_raw	785719
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	54108
idealcoprime	84
idealcoprimefact	37204
idealdiv	39758
idealdiv0	56
idealdivexact	5277
idealdivpowprime	13007
idealdown	3045
idealfactor	268341
idealfactor_limit	268767
idealfactor_partial	25529
idealhnf	665
idealhnf0	413
idealhnf_principal	1391837
idealhnf_shallow	1856105
idealhnf_two	802398
idealintersect	21
idealinv	115850
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3920
idealmin	7
idealmul	512072
idealmul0	70
idealmul_aux	512073
idealmulelt	266235
idealmulpowprime	825344
idealmulred	17221
idealnorm	105812
idealnumden	389792
idealpow	941751
idealpow0	2499
idealpow_aux	941744
idealpowprime	1305997
idealpowred	80284
idealpows	313430
idealprod	1064
idealprodprime	666
idealprodval	1917
idealpseudomin	142656
idealpseudomin_nonscalar	0
idealpseudominvec	1252844
idealpseudored	1344749
idealred0	138769
idealred_elt	13414
idealredmodpower	59206
idealredmodpower_i	118397
idealsqr	39249
idealsqr_aux	39249
idealsqrprime	317411
idealsqrtn_int	7784
idealtwoelt	97614
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	16474755
idealval	9731160
in_ideal	28
isideal	91
lcmuu	1638729
make_integral	10920
mat_ideal_two_elt	250788
mat_ideal_two_elt2	21
matreduce	63
nfV_eltembed	84
nfV_idealhnf	84
nf_coprime_part	126
nf_get_Gtwist	138776
nf_get_Gtwist1	12667
nf_remove_denom_p	4376533
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	225517
p_makecoprime	94901
prV_e_muls	28475
prV_lcm_capZ	80974
prV_primes	66262
pr_hnf	3801811
pr_inv	17851
pr_inv_p	38511
pr_uniformizer	58449
ramified_root	7777
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	123214
to_famat	0
to_famat_shallow	2768216
trivial_merge	28
twistG	12709
u_ppo	54298064
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	15996983
vecpow	0
vecsqr	185983
zk_pvalrem	4330725

Generated by: LCOV version 1.16