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
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
famat_to_Fp_coprime	665
idealhnf	665
idealprodprime	666
vecinv	826
vecdiv	903
idealprod	1034
idealprodval	1887
idealdown	2242
idealtwoelt0	2485
idealpow0	2499
idealispower	3774
idealdivexact	5131
gpidealval	7119
ramified_root	7485
idealsqrtn_int	7492
idealred_elt	8871
famat_div_shallow	10311
make_integral	10920
_mul	11281
nf_get_Gtwist1	12667
twistG	12709
idealdivpowprime	13007
famatV_factorback	13814
prV_e_muls	14314
pr_inv	15504
idealmulred	17221
idealaddtoone_i	17633
ext_inv	18043
Q_nffactor	18517
famat_to_nf_moddivisor	18606
famat_sub	19361
famat_sqr	22776
idealfactor_partial	24696
idealcoprimefact	25169
famat_inv_shallow	26335
famatV_zv_factorback	26995
_idealmulred	28502
idealredmodpower	32566
ext_sqr	33738
_idealsqrred	35359
_sqr	35359
pr_inv_p	36652
idealsqr	38785
idealsqr_aux	38785
idealdiv	39252
prV_primes	40253
idealapprfact_i	40664
famat_remove_trivial	40782
factorbackprime	46720
pr_uniformizer	50756
famat_pow_shallow	56947
addmul_mat	59618
ext_mul	59629
famat_pow	60642
idealredmodpower_i	65118
prV_lcm_capZ	67530
idealHNF_inv	68963
idealpowred	75734
idealtwoelt	79955
RM_round_maxrank	81633
idealadd	82432
famat_mulpow_shallow	83262
famat_pows_shallow	84676
p_makecoprime	84823
famat_mulpows_shallow	85387
nf_to_Fp_coprime	87320
to_Fp_coprime	89777
idealnorm	105520
get_random_a	111171
idealinv	111543
idealHNF_factor	123959
idealpseudomin	133425
idealred0	133929
nf_get_Gtwist	133936
idealfactor	142173
idealfactor_limit	142600
idealHNF_Z_factor_i	151569
idealHNF_factor_i	151569
append	153958
famat_add	159708
famat_mul_shallow	163530
famatsmall_reduce	184670
vecsqr	185983
Q_to_famat	191415
famat_inv	192110
famat_div	193688
idealpows	195071
idealHNF_inv_Z	195745
ok_elt	209795
mat_ideal_two_elt	228050
idealsqrprime	234708
idealnumden	246845
idealmulelt	258597
famat_reduce	277798
Z_to_famat	365735
famat_mul	426099
idealHNF_mul	433736
idealaddtoone_raw	471053
idealmulpowprime	476932
_idealaddtoone	488687
idealmul	490318
idealmul_aux	490319
ZM_famat_limit	545386
idealhnf_two	577429
idealHNF_mul_two	699920
Z_cba	757267
idealpow_aux	776861
idealpow	776863
idealpowprime	865893
Z_ppio	986062
idealpseudominvec	1212431
lcmuu	1253333
idealpseudored	1265757
idealhnf_principal	1289946
idealhnf_shallow	1594560
famat_makecoprime	2068898
to_famat_shallow	2670579
pr_hnf	3056105
idealHNF_norm_pval	3780899
idealHNF_val	3896146
zk_pvalrem	4095761
nf_remove_denom_p	4137173
Fl_invgen	4926971
Z_cba_rec	6827597
idealval	9300248
idealtyp	14833743
vecmul	15845636
Z_ppo	18885808
u_ppo	53766399

Generated by: LCOV version 1.16