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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 91.9 % 1856 1705 Test Date: 2026-08-12 17:02:34 Functions: 92.0 % 187 172 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
idealfromgens	49
idealdiv0	56
hnf_Z_QC	70
idealaddtoone0	70
idealmul0	70
hnf_Q_QC	77
hnf_Z_ZC	77
idealismaximal	77
idealismaximal_i	77
matreduce	77
idealcoprime	84
nfV_eltembed	84
nfweilheight	84
nfweilheight_i	84
isideal	91
idealaddtoone	98
sunits_makecoprime	98
nf_coprime_part	126
gpidealfactor	189
idealhnf0	413
nfV_idealhnf	455
nfV_to_ZM	455
vec_mulid	462
famat_to_Fp_coprime	665
idealhnf	665
idealprodprime	666
vecinv	826
vecdiv	903
idealprod	1064
idealprodval	1917
idealtwoelt0	2485
idealpow0	2499
idealdown	3031
idealispower	3906
idealdivexact	5263
gpidealval	7119
ramified_root	7749
idealsqrtn_int	7756
famat_div_shallow	10311
make_integral	10920
_mul	11384
nf_get_Gtwist1	12667
twistG	12709
idealdivpowprime	13007
idealred_elt	13189
famatV_factorback	13814
idealmulred	17221
idealaddtoone_i	17633
pr_inv	17867
famat_to_nf_moddivisor	18606
ext_inv	20411
famat_sub	20915
famat_sqr	22986
idealfactor_partial	25515
famat_inv_shallow	26947
Q_nffactor	28532
prV_e_muls	28588
_idealmulred	28605
ext_sqr	33948
_idealsqrred	35761
_sqr	35761
idealcoprimefact	37191
pr_inv_p	38687
idealsqr	39247
idealsqr_aux	39247
idealdiv	39744
idealapprfact_i	54089
famatV_zv_factorback	56273
pr_uniformizer	58439
idealredmodpower	59192
famat_pow	60642
ext_mul	61065
famat_pow_shallow	62030
prV_primes	66234
addmul_mat	66452
famat_remove_trivial	67007
factorbackprime	75623
idealpowred	80389
prV_lcm_capZ	81194
idealadd	83578
famat_mulpow_shallow	88345
p_makecoprime	95070
idealtwoelt	97948
RM_round_maxrank	98530
idealHNF_inv	98599
idealnorm	106058
idealinv	115860
get_random_a	118265
idealredmodpower_i	118370
nf_to_Fp_coprime	119798
to_Fp_coprime	122255
idealred0	139186
nf_get_Gtwist	139193
idealpseudomin	142672
famat_mulpows_shallow	147672
famat_pows_shallow	151895
append	155938
famat_add	162635
famatsmall_reduce	185897
vecsqr	185983
Q_to_famat	197091
famat_inv	199363
famat_div	200127
famat_mul_shallow	224918
ok_elt	226140
idealHNF_factor	240113
idealHNF_inv_Z	241003
mat_ideal_two_elt	251118
idealfactor	268344
idealfactor_limit	268771
idealmulelt	287056
idealHNF_Z_factor_i	294023
idealHNF_factor_i	294023
famat_reduce	308206
idealpows	313403
idealsqrprime	317553
Z_to_famat	376296
idealnumden	389759
famat_mul	451465
idealHNF_mul	502042
idealmul	512084
idealmul_aux	512084
ZM_famat_limit	568151
Z_cba	757372
idealaddtoone_raw	785631
_idealaddtoone	803264
idealhnf_two	803540
idealmulpowprime	828174
idealpow	942118
idealpow_aux	942118
Z_ppio	986167
idealHNF_mul_two	990648
idealpseudominvec	1254116
idealpowprime	1309214
idealhnf_principal	1335370
idealpseudored	1346028
lcmuu	1656083
idealhnf_shallow	1834554
famat_makecoprime	2220969
to_famat_shallow	2769802
pr_hnf	3803305
idealHNF_norm_pval	4247853
zk_pvalrem	4331909
nf_remove_denom_p	4377735
idealHNF_val	4385075
Fl_invgen	5934615
Z_cba_rec	6828640
idealval	9806932
vecmul	16133722
idealtyp	16596872
Z_ppo	19281944
u_ppo	54355549

Generated by: LCOV version 2.0-1