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 30622-caa25a75db) Lines: 1696 1847 91.8 % Date: 2026-01-22 09:18:00 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	664
famat_to_Fp_coprime	665
idealprodprime	666
vecinv	826
vecdiv	903
idealprod	1058
idealprodval	1911
idealtwoelt0	2485
idealpow0	2499
idealdown	2779
idealispower	3859
idealdivexact	5215
gpidealval	7119
ramified_root	7655
idealsqrtn_int	7662
famat_div_shallow	10311
make_integral	10922
_mul	11138
idealred_elt	12611
nf_get_Gtwist1	12641
twistG	12683
idealdivpowprime	13007
famatV_factorback	13727
pr_inv	16951
idealmulred	17167
idealaddtoone_i	17633
famat_to_nf_moddivisor	18606
ext_inv	19440
famat_sub	20172
famat_sqr	22318
idealfactor_partial	25249
prV_e_muls	26163
Q_nffactor	26792
famat_inv_shallow	26850
_idealmulred	28305
ext_sqr	33280
_idealsqrred	35048
_sqr	35048
idealcoprimefact	35117
pr_inv_p	37399
idealsqr	38193
idealsqr_aux	38193
idealdiv	39631
famatV_zv_factorback	50561
idealapprfact_i	50829
idealredmodpower	53933
pr_uniformizer	54390
ext_mul	59746
famat_pow	60618
famat_pow_shallow	61006
prV_primes	61399
famat_remove_trivial	61708
addmul_mat	63330
idealHNF_inv	69651
factorbackprime	70013
prV_lcm_capZ	77695
idealpowred	78064
idealadd	83333
famat_mulpow_shallow	87204
idealtwoelt	90102
RM_round_maxrank	90961
p_makecoprime	93151
idealnorm	105684
idealredmodpower_i	107852
nf_to_Fp_coprime	111159
get_random_a	112082
to_Fp_coprime	113616
idealinv	114452
famat_mulpows_shallow	135036
idealred0	135240
nf_get_Gtwist	135247
idealpseudomin	138407
famat_pows_shallow	138908
append	153465
famat_add	159876
famatsmall_reduce	184676
vecsqr	185983
Q_to_famat	195430
famat_inv	197060
famat_div	198053
idealHNF_inv_Z	205229
famat_mul_shallow	212130
ok_elt	213174
idealHNF_factor	217465
mat_ideal_two_elt	241172
idealfactor	243955
idealfactor_limit	244382
idealmulelt	264783
idealHNF_Z_factor_i	266219
idealHNF_factor_i	266219
idealpows	282430
idealsqrprime	296694
famat_reduce	300824
idealnumden	361804
Z_to_famat	373304
famat_mul	443740
idealHNF_mul	461895
idealmul	506862
idealmul_aux	506862
ZM_famat_limit	564003
idealaddtoone_raw	724928
_idealaddtoone	742557
idealhnf_two	751923
Z_cba	757267
idealmulpowprime	766123
idealpow_aux	902303
idealpow	902304
idealHNF_mul_two	920325
Z_ppio	986062
idealpowprime	1221529
idealpseudominvec	1245702
idealpseudored	1329946
idealhnf_principal	1372461
lcmuu	1543775
idealhnf_shallow	1801858
famat_makecoprime	2194180
to_famat_shallow	2749783
pr_hnf	3634799
idealHNF_norm_pval	4105783
idealHNF_val	4234308
zk_pvalrem	4284710
nf_remove_denom_p	4329770
Fl_invgen	5661179
Z_cba_rec	6827597
idealval	9538057
vecmul	15938741
idealtyp	16030008
Z_ppo	19023409
u_ppo	54163880

Generated by: LCOV version 1.16