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 30568-0d72d66ef5) Lines: 1697 1847 91.9 % Date: 2025-12-01 09:22:22 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Z_dcba_rec	0
Z_ppgle	0
ext_pow	0
famat_Z_gcd	0
famat_idealfactor	0
famat_to_nf	0
idealHNF_Z_factor	0
idealapprfact	0
idealpseudomin_nonscalar	0
nfdivmodpr	0
nfkermodpr	0
nfpowmodpr	0
nfsolvemodpr	0
to_famat	0
vecpow	0
err_divexact	7
hnf_QC_QC	7
idealmin	7
nfmulmodpr	7
ramified_root_simple	7
idealappr	14
idealappr0	14
not_in_ideal	14
chk_vdir	21
hnf_Q_Q	21
idealintersect	21
idealismaximal_mat	21
mat_ideal_two_elt2	21
ZV_cba	28
in_ideal	28
trivial_merge	28
idealaddmultoone	35
idealismaximal_int	42
idealtwoelt2	42
ZV_cba_extend	49
idealdiv0	56
matreduce	63
hnf_Z_QC	70
idealaddtoone0	70
idealmul0	70
hnf_Q_QC	77
hnf_Z_ZC	77
idealismaximal	77
idealismaximal_i	77
idealcoprime	84
nfV_eltembed	84
nfV_idealhnf	84
nfweilheight	84
nfweilheight_i	84
isideal	91
vec_mulid	91
idealaddtoone	98
sunits_makecoprime	98
nf_coprime_part	126
gpidealfactor	189
idealhnf0	413
idealhnf	665
idealprodprime	666
famat_to_Fp_coprime	693
vecinv	826
vecdiv	903
idealprod	1064
idealprodval	1917
idealtwoelt0	2485
idealpow0	2499
idealdown	3045
idealispower	3920
idealdivexact	5277
gpidealval	7119
ramified_root	7777
idealsqrtn_int	7784
famat_div_shallow	10304
make_integral	10920
_mul	11384
nf_get_Gtwist1	12667
twistG	12709
idealdivpowprime	13007
idealred_elt	13409
famatV_factorback	13807
idealmulred	17221
idealaddtoone_i	17633
pr_inv	17850
famat_to_nf_moddivisor	18606
ext_inv	20403
famat_sub	20980
famat_sqr	22981
idealfactor_partial	25529
famat_inv_shallow	26946
prV_e_muls	28459
Q_nffactor	28521
_idealmulred	28605
ext_sqr	33943
_idealsqrred	35763
_sqr	35763
idealcoprimefact	37204
pr_inv_p	38513
idealsqr	39249
idealsqr_aux	39249
idealdiv	39758
idealapprfact_i	54110
famatV_zv_factorback	56328
pr_uniformizer	58444
idealredmodpower	59206
famat_pow	60642
ext_mul	60802
famat_pow_shallow	62008
prV_primes	66262
addmul_mat	66635
famat_remove_trivial	67007
idealHNF_inv	69877
factorbackprime	75593
idealpowred	80284
prV_lcm_capZ	80976
idealadd	83599
famat_mulpow_shallow	88316
p_makecoprime	94897
idealtwoelt	97614
RM_round_maxrank	98182
idealnorm	105812
idealinv	115849
get_random_a	117889
idealredmodpower_i	118398
nf_to_Fp_coprime	120036
to_Fp_coprime	123214
idealred0	138769
nf_get_Gtwist	138776
idealpseudomin	142651
famat_mulpows_shallow	147767
famat_pows_shallow	152126
append	154200
famat_add	160832
vecsqr	185983
famatsmall_reduce	189704
Q_to_famat	197188
famat_inv	199382
famat_div	200219
idealHNF_inv_Z	212149
famat_mul_shallow	225164
ok_elt	225403
idealHNF_factor	240132
mat_ideal_two_elt	250791
idealmulelt	266235
idealfactor	268341
idealfactor_limit	268769
idealHNF_Z_factor_i	294029
idealHNF_factor_i	294031
famat_reduce	306413
idealpows	313429
idealsqrprime	317381
Z_to_famat	376420
idealnumden	389792
famat_mul	449716
idealHNF_mul	473689
idealmul	512068
idealmul_aux	512069
ZM_famat_limit	568160
Z_cba	757267
idealaddtoone_raw	785742
idealhnf_two	802367
_idealaddtoone	803367
idealmulpowprime	825366
idealpow	941685
idealpow_aux	941686
idealHNF_mul_two	971470
Z_ppio	986062
idealpseudominvec	1252846
idealpowprime	1305919
idealpseudored	1344756
idealhnf_principal	1391835
lcmuu	1638336
idealhnf_shallow	1856113
famat_makecoprime	2220990
to_famat_shallow	2768208
pr_hnf	3801833
idealHNF_norm_pval	4216772
zk_pvalrem	4330770
idealHNF_val	4354513
nf_remove_denom_p	4376559
Fl_invgen	5900387
Z_cba_rec	6827597
idealval	9730891
vecmul	15992636
idealtyp	16474371
Z_ppo	18840062
u_ppo	54297533

Generated by: LCOV version 1.16