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 30401-87099e65a6) Lines: 1696 1845 91.9 % Date: 2025-07-18 09:23:12 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	3031
idealispower	3899
idealdivexact	5214
gpidealval	7119
ramified_root	7735
idealsqrtn_int	7742
famat_div_shallow	10304
make_integral	10920
_mul	11363
nf_get_Gtwist1	12597
twistG	12639
idealdivpowprime	13007
idealred_elt	13396
famatV_factorback	13765
idealmulred	17207
idealaddtoone_i	17633
pr_inv	17825
famat_to_nf_moddivisor	18606
ext_inv	20370
famat_sub	20931
famat_sqr	22923
idealfactor_partial	25515
famat_inv_shallow	26945
prV_e_muls	28479
Q_nffactor	28490
_idealmulred	28570
ext_sqr	33871
_idealsqrred	35649
_sqr	35649
idealcoprimefact	37190
pr_inv_p	38480
idealsqr	39135
idealsqr_aux	39135
idealdiv	39716
idealapprfact_i	54096
famatV_zv_factorback	56273
pr_uniformizer	58449
idealredmodpower	59185
famat_pow	60642
ext_mul	60726
famat_pow_shallow	61964
prV_primes	66234
addmul_mat	66887
famat_remove_trivial	66930
idealHNF_inv	69848
factorbackprime	75591
idealpowred	80176
prV_lcm_capZ	80934
idealadd	83529
famat_mulpow_shallow	88237
p_makecoprime	94887
idealtwoelt	97565
RM_round_maxrank	98077
idealnorm	105161
idealinv	115774
get_random_a	117650
idealredmodpower_i	118356
nf_to_Fp_coprime	119854
to_Fp_coprime	123032
idealred0	138523
nf_get_Gtwist	138530
idealpseudomin	142398
famat_mulpows_shallow	147573
append	151936
famat_pows_shallow	151998
famat_add	158570
vecsqr	185983
famatsmall_reduce	189697
Q_to_famat	197116
famat_inv	199309
famat_div	200130
idealHNF_inv_Z	211865
famat_mul_shallow	224849
ok_elt	225077
idealHNF_factor	240090
mat_ideal_two_elt	250494
idealmulelt	266235
idealfactor	268272
idealfactor_limit	268703
idealHNF_Z_factor_i	293965
idealHNF_factor_i	293966
famat_reduce	304104
idealpows	313255
idealsqrprime	317329
Z_to_famat	376308
idealnumden	389708
Z_cba	413007
famat_mul	447371
idealHNF_mul	473241
idealmul	511772
idealmul_aux	511772
Z_ppio	532903
ZM_famat_limit	568161
idealaddtoone_raw	785716
idealhnf_two	802133
_idealaddtoone	803350
idealmulpowprime	825089
idealpow	941501
idealpow_aux	941504
idealHNF_mul_two	970501
idealpseudominvec	1250411
idealpowprime	1305544
idealpseudored	1342316
idealhnf_principal	1389559
lcmuu	1636688
idealhnf_shallow	1853689
famat_makecoprime	2218684
to_famat_shallow	2765790
Z_cba_rec	3766441
pr_hnf	3798498
idealHNF_norm_pval	4101132
idealHNF_val	4238705
zk_pvalrem	4318895
nf_remove_denom_p	4364693
Fl_invgen	5895421
idealval	9476674
vecmul	16008903
idealtyp	16215453
Z_ppo	18262025
u_ppo	54295844

Generated by: LCOV version 1.16