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 30256-57c6c2b57f) Lines: 1696 1845 91.9 % Date: 2025-05-09 09:19:30 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	5718336
Q_nffactor	28470
Q_to_famat	197117
RM_round_maxrank	97629
ZM_famat_limit	568112
ZV_cba	28
ZV_cba_extend	49
Z_cba	413007
Z_cba_rec	3766441
Z_dcba_rec	0
Z_ppgle	0
Z_ppio	532903
Z_ppo	18150473
Z_to_famat	376324
_idealaddtoone	730903
_idealmulred	28563
_idealsqrred	35642
_mul	11356
_sqr	35642
addmul_mat	65849
append	151935
chk_vdir	21
err_divexact	7
ext_inv	20370
ext_mul	60726
ext_pow	0
ext_sqr	33871
factorbackprime	62402
famatV_factorback	13765
famatV_zv_factorback	46711
famat_Z_gcd	0
famat_add	158571
famat_div	200146
famat_div_shallow	10304
famat_idealfactor	0
famat_inv	199324
famat_inv_shallow	26973
famat_makecoprime	2002986
famat_mul	447389
famat_mul_shallow	200783
famat_mulpow_shallow	88286
famat_mulpows_shallow	118440
famat_pow	60642
famat_pow_shallow	62013
famat_pows_shallow	123087
famat_reduce	296089
famat_remove_trivial	53777
famat_sqr	22923
famat_sub	20932
famat_to_Fp_coprime	693
famat_to_nf	0
famat_to_nf_moddivisor	20118
famatsmall_reduce	179103
get_random_a	117287
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	285886
idealHNF_factor	240057
idealHNF_factor_i	285886
idealHNF_inv	68959
idealHNF_inv_Z	210438
idealHNF_mul	470409
idealHNF_mul_two	923752
idealHNF_norm_pval	4041613
idealHNF_val	4177063
idealadd	82640
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17640
idealaddtoone_raw	713263
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	54067
idealcoprime	84
idealcoprimefact	37191
idealdiv	39499
idealdiv0	56
idealdivexact	5214
idealdivpowprime	13007
idealdown	3031
idealfactor	268226
idealfactor_limit	268653
idealfactor_partial	25501
idealhnf	665
idealhnf0	413
idealhnf_principal	1311414
idealhnf_shallow	1722153
idealhnf_two	740016
idealintersect	21
idealinv	114885
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3899
idealmin	7
idealmul	507589
idealmul0	70
idealmul_aux	507589
idealmulelt	265416
idealmulpowprime	769338
idealmulred	17207
idealnorm	104937
idealnumden	379894
idealpow	890094
idealpow0	2499
idealpow_aux	890092
idealpowprime	1198686
idealpowred	80202
idealpows	274490
idealprod	840
idealprodprime	666
idealprodval	1917
idealpseudomin	142281
idealpseudomin_nonscalar	0
idealpseudominvec	1204259
idealpseudored	1286010
idealred0	138568
idealred_elt	13233
idealredmodpower	49399
idealredmodpower_i	98784
idealsqr	38904
idealsqr_aux	38904
idealsqrprime	285737
idealsqrtn_int	7742
idealtwoelt	97116
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	15845340
idealval	9394341
in_ideal	28
isideal	91
lcmuu	1590100
make_integral	10920
mat_ideal_two_elt	250030
mat_ideal_two_elt2	21
matreduce	63
nfV_eltembed	84
nfV_idealhnf	84
nf_coprime_part	126
nf_get_Gtwist	138575
nf_get_Gtwist1	12597
nf_remove_denom_p	4137879
nf_to_Fp_coprime	119867
nfdivmodpr	0
nfkermodpr	0
nfmulmodpr	7
nfpowmodpr	0
nfsolvemodpr	0
nfweilheight	84
nfweilheight_i	84
not_in_ideal	14
ok_elt	223658
p_makecoprime	94825
prV_e_muls	28464
prV_lcm_capZ	82025
prV_primes	61452
pr_hnf	3579605
pr_inv	17825
pr_inv_p	38478
pr_uniformizer	58337
ramified_root	7735
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	123046
to_famat	0
to_famat_shallow	2688422
trivial_merge	28
twistG	12639
u_ppo	54224399
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	16016867
vecpow	0
vecsqr	185983
zk_pvalrem	4092076

Generated by: LCOV version 1.16