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 30556-bb9f5f8fc8) Lines: 1696 1845 91.9 % Date: 2025-11-25 09:20:50 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	603
idealprodprime	632
famat_to_Fp_coprime	693
vecinv	826
vecdiv	903
idealprod	1036
idealprodval	1225
idealtwoelt0	2723
idealpow0	2737
idealdown	2947
idealispower	3864
idealdivexact	4993
gpidealval	7105
ramified_root	7665
idealsqrtn_int	7672
famat_div_shallow	10304
make_integral	10920
_mul	11370
idealdivpowprime	12349
nf_get_Gtwist1	12597
twistG	12639
idealred_elt	13304
famatV_factorback	13765
idealaddtoone_i	16800
idealmulred	17221
pr_inv	17462
famat_to_nf_moddivisor	18606
ext_inv	20163
famat_sub	20795
famat_sqr	22926
idealfactor_partial	25431
prV_e_muls	26546
famat_inv_shallow	26945
Q_nffactor	27219
_idealmulred	28591
ext_sqr	33888
_idealsqrred	35666
_sqr	35666
idealdiv	36216
idealcoprimefact	37121
pr_inv_p	37666
idealsqr	39124
idealsqr_aux	39124
idealapprfact_i	53804
famatV_zv_factorback	55879
pr_uniformizer	57889
idealredmodpower	58905
famat_pow	60642
ext_mul	60709
famat_pow_shallow	61964
idealHNF_inv	63391
idealadd	64305
prV_primes	65900
addmul_mat	66582
famat_remove_trivial	66663
factorbackprime	74498
idealpowred	79764
prV_lcm_capZ	80670
famat_mulpow_shallow	88237
idealinv	93332
p_makecoprime	94886
idealtwoelt	95272
RM_round_maxrank	96930
idealnorm	105728
nf_to_Fp_coprime	115064
get_random_a	117490
idealredmodpower_i	117798
to_Fp_coprime	118242
idealred0	138127
nf_get_Gtwist	138134
idealpseudomin	141904
famat_mulpows_shallow	145875
famat_pows_shallow	150704
append	154145
famat_add	160698
vecsqr	185983
famatsmall_reduce	189689
Q_to_famat	195835
famat_inv	197873
famat_div	198765
idealHNF_inv_Z	204966
famat_mul_shallow	223204
ok_elt	224526
idealHNF_factor	239621
mat_ideal_two_elt	240055
idealmulelt	249604
idealfactor	266539
idealfactor_limit	266952
idealHNF_Z_factor_i	293360
idealHNF_factor_i	293360
famat_reduce	305923
idealpows	312215
idealsqrprime	316835
Z_to_famat	373798
idealnumden	388932
famat_mul	448261
idealHNF_mul	448287
idealmul	464344
idealmul_aux	464344
ZM_famat_limit	566659
Z_cba	757267
idealaddtoone_raw	784009
idealhnf_two	797769
_idealaddtoone	800808
idealmulpowprime	820033
idealpow	936253
idealpow_aux	936255
idealHNF_mul_two	951295
Z_ppio	986062
idealpseudominvec	1250898
idealpowprime	1299117
idealpseudored	1342489
idealhnf_principal	1346476
lcmuu	1618042
idealhnf_shallow	1836233
famat_makecoprime	2218278
to_famat_shallow	2764724
pr_hnf	3793648
idealHNF_norm_pval	4093923
idealHNF_val	4230892
zk_pvalrem	4317448
nf_remove_denom_p	4363265
Fl_invgen	5849505
Z_cba_rec	6827597
idealval	9474154
vecmul	15976420
idealtyp	16042341
Z_ppo	18671604
u_ppo	54261681

Generated by: LCOV version 1.16