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 30582-6e9af8ee1d) Lines: 1696 1847 91.8 % Date: 2025-12-20 09:23:49 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	3038
idealispower	3913
idealdivexact	5270
gpidealval	7119
ramified_root	7763
idealsqrtn_int	7770
famat_div_shallow	10304
make_integral	10920
_mul	11378
nf_get_Gtwist1	12667
twistG	12709
idealdivpowprime	13007
idealred_elt	13408
famatV_factorback	13807
idealmulred	17221
idealaddtoone_i	17633
pr_inv	17847
famat_to_nf_moddivisor	18606
ext_inv	20400
famat_sub	20980
famat_sqr	22980
idealfactor_partial	25522
famat_inv_shallow	26945
prV_e_muls	28480
Q_nffactor	28511
_idealmulred	28599
ext_sqr	33942
_idealsqrred	35755
_sqr	35755
idealcoprimefact	37198
pr_inv_p	38501
idealsqr	39241
idealsqr_aux	39241
idealdiv	39751
idealapprfact_i	54117
famatV_zv_factorback	56301
pr_uniformizer	58505
idealredmodpower	59199
famat_pow	60642
ext_mul	60800
famat_pow_shallow	62013
prV_primes	66247
addmul_mat	66733
famat_remove_trivial	67000
idealHNF_inv	69877
factorbackprime	75597
idealpowred	80263
prV_lcm_capZ	80983
idealadd	83592
famat_mulpow_shallow	88321
p_makecoprime	94892
idealtwoelt	97639
RM_round_maxrank	98215
idealnorm	105798
idealinv	115839
get_random_a	117896
idealredmodpower_i	118383
nf_to_Fp_coprime	119952
to_Fp_coprime	123130
idealred0	138739
nf_get_Gtwist	138746
idealpseudomin	142618
famat_mulpows_shallow	147717
famat_pows_shallow	152080
append	154200
famat_add	160826
vecsqr	185983
famatsmall_reduce	189422
Q_to_famat	197177
famat_inv	199374
famat_div	200214
idealHNF_inv_Z	212178
famat_mul_shallow	225129
ok_elt	225478
idealHNF_factor	240139
mat_ideal_two_elt	250788
idealmulelt	266228
idealfactor	268338
idealfactor_limit	268766
idealHNF_Z_factor_i	294025
idealHNF_factor_i	294026
famat_reduce	306386
idealpows	313374
idealsqrprime	317390
Z_to_famat	376404
idealnumden	389788
famat_mul	449705
idealHNF_mul	473747
idealmul	512030
idealmul_aux	512031
ZM_famat_limit	568160
Z_cba	757267
idealaddtoone_raw	785724
idealhnf_two	802329
_idealaddtoone	803350
idealmulpowprime	825414
idealpow	941663
idealpow_aux	941667
idealHNF_mul_two	971531
Z_ppio	986062
idealpseudominvec	1252847
idealpowprime	1305956
idealpseudored	1344757
idealhnf_principal	1391806
lcmuu	1638930
idealhnf_shallow	1856062
famat_makecoprime	2220938
to_famat_shallow	2768202
pr_hnf	3801706
idealHNF_norm_pval	4215320
zk_pvalrem	4330488
idealHNF_val	4353083
nf_remove_denom_p	4376290
Fl_invgen	5901223
Z_cba_rec	6827597
idealval	9727991
vecmul	15993193
idealtyp	16471323
Z_ppo	18839449
u_ppo	54298312

Generated by: LCOV version 1.16