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 30573-61accf17c8) Lines: 1696 1847 91.8 % Date: 2025-12-15 09:22:15 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	3045
idealispower	3920
idealdivexact	5277
gpidealval	7119
ramified_root	7777
idealsqrtn_int	7784
famat_div_shallow	10304
make_integral	10920
_mul	11385
nf_get_Gtwist1	12667
twistG	12709
idealdivpowprime	13007
idealred_elt	13414
famatV_factorback	13807
idealmulred	17221
idealaddtoone_i	17633
pr_inv	17851
famat_to_nf_moddivisor	18606
ext_inv	20404
famat_sub	20986
famat_sqr	22979
idealfactor_partial	25529
famat_inv_shallow	26945
prV_e_muls	28445
Q_nffactor	28521
_idealmulred	28606
ext_sqr	33941
_idealsqrred	35761
_sqr	35761
idealcoprimefact	37204
pr_inv_p	38512
idealsqr	39247
idealsqr_aux	39247
idealdiv	39758
idealapprfact_i	54110
famatV_zv_factorback	56328
pr_uniformizer	58449
idealredmodpower	59206
famat_pow	60642
ext_mul	60802
famat_pow_shallow	62013
prV_primes	66261
addmul_mat	66654
famat_remove_trivial	67007
idealHNF_inv	69876
factorbackprime	75598
idealpowred	80284
prV_lcm_capZ	80976
idealadd	83599
famat_mulpow_shallow	88321
p_makecoprime	94904
idealtwoelt	97614
RM_round_maxrank	98181
idealnorm	105812
idealinv	115849
get_random_a	117888
idealredmodpower_i	118398
nf_to_Fp_coprime	120036
to_Fp_coprime	123214
idealred0	138767
nf_get_Gtwist	138774
idealpseudomin	142653
famat_mulpows_shallow	147765
famat_pows_shallow	152121
append	154200
famat_add	160832
vecsqr	185983
famatsmall_reduce	189685
Q_to_famat	197193
famat_inv	199380
famat_div	200222
idealHNF_inv_Z	212152
famat_mul_shallow	225164
ok_elt	225432
idealHNF_factor	240130
mat_ideal_two_elt	250790
idealmulelt	266235
idealfactor	268340
idealfactor_limit	268767
idealHNF_Z_factor_i	294020
idealHNF_factor_i	294021
famat_reduce	306410
idealpows	313432
idealsqrprime	317417
Z_to_famat	376422
idealnumden	389786
famat_mul	449720
idealHNF_mul	473787
idealmul	512078
idealmul_aux	512078
ZM_famat_limit	568161
Z_cba	757267
idealaddtoone_raw	785734
idealhnf_two	802439
_idealaddtoone	803363
idealmulpowprime	825480
idealpow	941777
idealpow_aux	941780
idealHNF_mul_two	971689
Z_ppio	986062
idealpseudominvec	1252846
idealpowprime	1306122
idealpseudored	1344751
idealhnf_principal	1391837
lcmuu	1638735
idealhnf_shallow	1856128
famat_makecoprime	2220978
to_famat_shallow	2768219
pr_hnf	3801846
idealHNF_norm_pval	4216942
zk_pvalrem	4330850
idealHNF_val	4354753
nf_remove_denom_p	4376654
Fl_invgen	5900859
Z_cba_rec	6827597
idealval	9731167
vecmul	16005694
idealtyp	16474798
Z_ppo	18840140
u_ppo	54298105

Generated by: LCOV version 1.16