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 30640-c2c58e18c5) Lines: 1696 1847 91.8 % Date: 2026-01-27 08:51:18 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	4926971
Q_nffactor	18517
Q_to_famat	191415
RM_round_maxrank	81633
ZM_famat_limit	545386
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	18885808
Z_to_famat	365735
_idealaddtoone	488687
_idealmulred	28502
_idealsqrred	35359
_mul	11281
_sqr	35359
addmul_mat	59618
append	153958
chk_vdir	21
err_divexact	7
ext_inv	18043
ext_mul	59629
ext_pow	0
ext_sqr	33738
factorbackprime	46720
famatV_factorback	13814
famatV_zv_factorback	26995
famat_Z_gcd	0
famat_add	159708
famat_div	193688
famat_div_shallow	10311
famat_idealfactor	0
famat_inv	192110
famat_inv_shallow	26335
famat_makecoprime	2068898
famat_mul	426099
famat_mul_shallow	163530
famat_mulpow_shallow	83262
famat_mulpows_shallow	85387
famat_pow	60642
famat_pow_shallow	56947
famat_pows_shallow	84676
famat_reduce	277798
famat_remove_trivial	40782
famat_sqr	22776
famat_sub	19361
famat_to_Fp_coprime	665
famat_to_nf	0
famat_to_nf_moddivisor	18606
famatsmall_reduce	184670
get_random_a	111171
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	151569
idealHNF_factor	123959
idealHNF_factor_i	151569
idealHNF_inv	68963
idealHNF_inv_Z	195745
idealHNF_mul	433736
idealHNF_mul_two	699920
idealHNF_norm_pval	3780899
idealHNF_val	3896146
idealadd	82432
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17633
idealaddtoone_raw	471053
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	40664
idealcoprime	84
idealcoprimefact	25169
idealdiv	39252
idealdiv0	56
idealdivexact	5131
idealdivpowprime	13007
idealdown	2242
idealfactor	142173
idealfactor_limit	142600
idealfactor_partial	24696
idealhnf	665
idealhnf0	413
idealhnf_principal	1289946
idealhnf_shallow	1594560
idealhnf_two	577429
idealintersect	21
idealinv	111543
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3774
idealmin	7
idealmul	490318
idealmul0	70
idealmul_aux	490319
idealmulelt	258597
idealmulpowprime	476932
idealmulred	17221
idealnorm	105520
idealnumden	246845
idealpow	776863
idealpow0	2499
idealpow_aux	776861
idealpowprime	865893
idealpowred	75734
idealpows	195071
idealprod	1034
idealprodprime	666
idealprodval	1887
idealpseudomin	133425
idealpseudomin_nonscalar	0
idealpseudominvec	1212431
idealpseudored	1265757
idealred0	133929
idealred_elt	8871
idealredmodpower	32566
idealredmodpower_i	65118
idealsqr	38785
idealsqr_aux	38785
idealsqrprime	234708
idealsqrtn_int	7492
idealtwoelt	79955
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	14833743
idealval	9300248
in_ideal	28
isideal	91
lcmuu	1253333
make_integral	10920
mat_ideal_two_elt	228050
mat_ideal_two_elt2	21
matreduce	63
nfV_eltembed	84
nfV_idealhnf	84
nf_coprime_part	126
nf_get_Gtwist	133936
nf_get_Gtwist1	12667
nf_remove_denom_p	4137173
nf_to_Fp_coprime	87320
nfdivmodpr	0
nfkermodpr	0
nfmulmodpr	7
nfpowmodpr	0
nfsolvemodpr	0
nfweilheight	84
nfweilheight_i	84
not_in_ideal	14
ok_elt	209795
p_makecoprime	84823
prV_e_muls	14314
prV_lcm_capZ	67530
prV_primes	40253
pr_hnf	3056105
pr_inv	15504
pr_inv_p	36652
pr_uniformizer	50756
ramified_root	7485
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	89777
to_famat	0
to_famat_shallow	2670579
trivial_merge	28
twistG	12709
u_ppo	53766399
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	15845636
vecpow	0
vecsqr	185983
zk_pvalrem	4095761

Generated by: LCOV version 1.16