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 30565-738e569de9) Lines: 1696 1847 91.8 % Date: 2025-11-30 09:23:42 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	5897389
Q_nffactor	28492
Q_to_famat	197115
RM_round_maxrank	98090
ZM_famat_limit	568160
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	18702679
Z_to_famat	376308
_idealaddtoone	803363
_idealmulred	28592
_idealsqrred	35663
_mul	11371
_sqr	35663
addmul_mat	66621
append	154144
chk_vdir	21
err_divexact	7
ext_inv	20381
ext_mul	60788
ext_pow	0
ext_sqr	33885
factorbackprime	75597
famatV_factorback	13765
famatV_zv_factorback	56273
famat_Z_gcd	0
famat_add	160788
famat_div	200129
famat_div_shallow	10304
famat_idealfactor	0
famat_inv	199321
famat_inv_shallow	26945
famat_makecoprime	2220886
famat_mul	449590
famat_mul_shallow	224850
famat_mulpow_shallow	88237
famat_mulpows_shallow	147570
famat_pow	60642
famat_pow_shallow	61964
famat_pows_shallow	151989
famat_reduce	306314
famat_remove_trivial	66958
famat_sqr	22923
famat_sub	20929
famat_to_Fp_coprime	693
famat_to_nf	0
famat_to_nf_moddivisor	18606
famatsmall_reduce	189689
get_random_a	117658
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	293993
idealHNF_factor	240109
idealHNF_factor_i	293993
idealHNF_inv	69848
idealHNF_inv_Z	211906
idealHNF_mul	473247
idealHNF_mul_two	970458
idealHNF_norm_pval	4101130
idealHNF_val	4238708
idealadd	83536
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17633
idealaddtoone_raw	785732
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	54095
idealcoprime	84
idealcoprimefact	37191
idealdiv	39716
idealdiv0	56
idealdivexact	5221
idealdivpowprime	13007
idealdown	3031
idealfactor	268293
idealfactor_limit	268721
idealfactor_partial	25515
idealhnf	665
idealhnf0	413
idealhnf_principal	1391730
idealhnf_shallow	1855910
idealhnf_two	802204
idealintersect	21
idealinv	115785
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3899
idealmin	7
idealmul	511801
idealmul0	70
idealmul_aux	511802
idealmulelt	266235
idealmulpowprime	824940
idealmulred	17221
idealnorm	105700
idealnumden	389735
idealpow	941514
idealpow0	2499
idealpow_aux	941514
idealpowprime	1305416
idealpowred	80207
idealpows	313278
idealprod	1064
idealprodprime	666
idealprodval	1917
idealpseudomin	142446
idealpseudomin_nonscalar	0
idealpseudominvec	1252508
idealpseudored	1344419
idealred0	138578
idealred_elt	13396
idealredmodpower	59192
idealredmodpower_i	118369
idealsqr	39149
idealsqr_aux	39149
idealsqrprime	317311
idealsqrtn_int	7742
idealtwoelt	97578
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	16233992
idealval	9492216
in_ideal	28
isideal	91
lcmuu	1636472
make_integral	10920
mat_ideal_two_elt	250509
mat_ideal_two_elt2	21
matreduce	63
nfV_eltembed	84
nfV_idealhnf	84
nf_coprime_part	126
nf_get_Gtwist	138585
nf_get_Gtwist1	12597
nf_remove_denom_p	4371308
nf_to_Fp_coprime	119854
nfdivmodpr	0
nfkermodpr	0
nfmulmodpr	7
nfpowmodpr	0
nfsolvemodpr	0
nfweilheight	84
nfweilheight_i	84
not_in_ideal	14
ok_elt	224966
p_makecoprime	94892
prV_e_muls	28475
prV_lcm_capZ	80961
prV_primes	66241
pr_hnf	3801253
pr_inv	17836
pr_inv_p	38486
pr_uniformizer	58449
ramified_root	7735
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	123032
to_famat	0
to_famat_shallow	2768040
trivial_merge	28
twistG	12639
u_ppo	54295509
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	16009047
vecpow	0
vecsqr	185983
zk_pvalrem	4325516

Generated by: LCOV version 1.16