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 30587-f85873d515) Lines: 1696 1847 91.8 % Date: 2025-12-29 09:21:39 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	5897738
Q_nffactor	28480
Q_to_famat	197172
RM_round_maxrank	97986
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	18838574
Z_to_famat	376398
_idealaddtoone	803199
_idealmulred	28598
_idealsqrred	35755
_mul	11377
_sqr	35755
addmul_mat	66601
append	154200
chk_vdir	21
err_divexact	7
ext_inv	20406
ext_mul	60593
ext_pow	0
ext_sqr	33942
factorbackprime	75595
famatV_factorback	13807
famatV_zv_factorback	56273
famat_Z_gcd	0
famat_add	160830
famat_div	200216
famat_div_shallow	10304
famat_idealfactor	0
famat_inv	199379
famat_inv_shallow	26945
famat_makecoprime	2220938
famat_mul	449708
famat_mul_shallow	225087
famat_mulpow_shallow	88322
famat_mulpows_shallow	147669
famat_pow	60642
famat_pow_shallow	62014
famat_pows_shallow	152028
famat_reduce	306356
famat_remove_trivial	66992
famat_sqr	22980
famat_sub	20983
famat_to_Fp_coprime	693
famat_to_nf	0
famat_to_nf_moddivisor	18606
famatsmall_reduce	184679
get_random_a	117742
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	293988
idealHNF_factor	240104
idealHNF_factor_i	293984
idealHNF_inv	69877
idealHNF_inv_Z	211968
idealHNF_mul	473440
idealHNF_mul_two	971147
idealHNF_norm_pval	4214813
idealHNF_val	4352456
idealadd	83578
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17633
idealaddtoone_raw	785570
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	54082
idealcoprime	84
idealcoprimefact	37191
idealdiv	39744
idealdiv0	56
idealdivexact	5263
idealdivpowprime	13007
idealdown	3031
idealfactor	268262
idealfactor_limit	268703
idealfactor_partial	25515
idealhnf	665
idealhnf0	413
idealhnf_principal	1391758
idealhnf_shallow	1855862
idealhnf_two	801949
idealintersect	21
idealinv	115838
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3906
idealmin	7
idealmul	512002
idealmul0	70
idealmul_aux	512002
idealmulelt	266221
idealmulpowprime	825307
idealmulred	17221
idealnorm	105784
idealnumden	389738
idealpow	941561
idealpow0	2499
idealpow_aux	941561
idealpowprime	1305790
idealpowred	80041
idealpows	313339
idealprod	1064
idealprodprime	666
idealprodval	1917
idealpseudomin	142461
idealpseudomin_nonscalar	0
idealpseudominvec	1252846
idealpseudored	1344753
idealred0	138519
idealred_elt	13400
idealredmodpower	59190
idealredmodpower_i	118368
idealsqr	39241
idealsqr_aux	39241
idealsqrprime	317396
idealsqrtn_int	7756
idealtwoelt	97402
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	16469806
idealval	9727540
in_ideal	28
isideal	91
lcmuu	1636687
make_integral	10920
mat_ideal_two_elt	250539
mat_ideal_two_elt2	21
matreduce	63
nfV_eltembed	84
nfV_idealhnf	84
nf_coprime_part	126
nf_get_Gtwist	138526
nf_get_Gtwist1	12667
nf_remove_denom_p	4376209
nf_to_Fp_coprime	119825
nfdivmodpr	0
nfkermodpr	0
nfmulmodpr	7
nfpowmodpr	0
nfsolvemodpr	0
nfweilheight	84
nfweilheight_i	84
not_in_ideal	14
ok_elt	225080
p_makecoprime	94887
prV_e_muls	28491
prV_lcm_capZ	80948
prV_primes	66234
pr_hnf	3801316
pr_inv	17853
pr_inv_p	38344
pr_uniformizer	58377
ramified_root	7749
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	123003
to_famat	0
to_famat_shallow	2768191
trivial_merge	28
twistG	12709
u_ppo	54295460
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	15996204
vecpow	0
vecsqr	185983
zk_pvalrem	4330401

Generated by: LCOV version 1.16