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 30472-f680168c62) Lines: 1696 1845 91.9 % Date: 2025-08-17 09:23:55 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	3031
idealispower	3899
idealdivexact	5214
gpidealval	7119
ramified_root	7735
idealsqrtn_int	7742
famat_div_shallow	10304
make_integral	10920
_mul	11370
nf_get_Gtwist1	12597
twistG	12639
idealdivpowprime	13007
idealred_elt	13393
famatV_factorback	13765
idealmulred	17221
idealaddtoone_i	17633
pr_inv	17834
famat_to_nf_moddivisor	18606
ext_inv	20381
famat_sub	20931
famat_sqr	22925
idealfactor_partial	25515
famat_inv_shallow	26945
Q_nffactor	28499
prV_e_muls	28504
_idealmulred	28591
ext_sqr	33887
_idealsqrred	35665
_sqr	35665
idealcoprimefact	37190
pr_inv_p	38485
idealsqr	39151
idealsqr_aux	39151
idealdiv	39716
idealapprfact_i	54096
famatV_zv_factorback	56273
pr_uniformizer	58450
idealredmodpower	59184
famat_pow	60642
ext_mul	60787
famat_pow_shallow	61965
prV_primes	66234
addmul_mat	66837
famat_remove_trivial	66930
idealHNF_inv	69849
factorbackprime	75591
idealpowred	80206
prV_lcm_capZ	80934
idealadd	83529
famat_mulpow_shallow	88238
p_makecoprime	94895
idealtwoelt	97572
RM_round_maxrank	98084
idealnorm	105665
idealinv	115784
get_random_a	117658
idealredmodpower_i	118354
nf_to_Fp_coprime	119854
to_Fp_coprime	123032
idealred0	138580
nf_get_Gtwist	138587
idealpseudomin	142446
famat_mulpows_shallow	147574
append	151939
famat_pows_shallow	151995
famat_add	158582
vecsqr	185983
famatsmall_reduce	189693
Q_to_famat	197116
famat_inv	199320
famat_div	200130
idealHNF_inv_Z	211908
famat_mul_shallow	224850
ok_elt	225068
idealHNF_factor	240085
mat_ideal_two_elt	250504
idealmulelt	266235
idealfactor	268266
idealfactor_limit	268707
idealHNF_Z_factor_i	293967
idealHNF_factor_i	293968
famat_reduce	304104
idealpows	313253
idealsqrprime	317324
Z_to_famat	376308
idealnumden	389712
famat_mul	447384
idealHNF_mul	473200
idealmul	511792
idealmul_aux	511792
ZM_famat_limit	568160
Z_cba	757267
idealaddtoone_raw	785721
idealhnf_two	802090
_idealaddtoone	803347
idealmulpowprime	825013
idealpow_aux	941419
idealpow	941421
idealHNF_mul_two	970469
Z_ppio	986062
idealpseudominvec	1250410
idealpowprime	1305420
idealpseudored	1342317
idealhnf_principal	1389563
lcmuu	1636899
idealhnf_shallow	1853716
famat_makecoprime	2218682
to_famat_shallow	2765827
pr_hnf	3799108
idealHNF_norm_pval	4100986
idealHNF_val	4238528
zk_pvalrem	4318911
nf_remove_denom_p	4364722
Fl_invgen	5895550
Z_cba_rec	6827597
idealval	9491938
vecmul	16005227
idealtyp	16231312
Z_ppo	18700869
u_ppo	54296039

Generated by: LCOV version 1.16