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 30482-15ec328664) Lines: 1696 1845 91.9 % Date: 2025-09-06 09:24:15 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	3031
idealispower	3899
idealdivexact	5214
gpidealval	7119
ramified_root	7735
idealsqrtn_int	7742
famat_div_shallow	10304
make_integral	10920
_mul	11370
nf_get_Gtwist1	12597
twistG	12639
idealdivpowprime	13007
idealred_elt	13394
famatV_factorback	13765
idealmulred	17221
idealaddtoone_i	17633
pr_inv	17836
famat_to_nf_moddivisor	18606
ext_inv	20382
famat_sub	20938
famat_sqr	22925
idealfactor_partial	25515
famat_inv_shallow	26945
prV_e_muls	28468
Q_nffactor	28484
_idealmulred	28591
ext_sqr	33887
_idealsqrred	35665
_sqr	35665
idealcoprimefact	37190
pr_inv_p	38485
idealsqr	39151
idealsqr_aux	39151
idealdiv	39716
idealapprfact_i	54096
famatV_zv_factorback	56273
pr_uniformizer	58447
idealredmodpower	59183
famat_pow	60642
ext_mul	60787
famat_pow_shallow	61962
prV_primes	66233
addmul_mat	66726
famat_remove_trivial	66929
idealHNF_inv	69849
factorbackprime	75589
idealpowred	80208
prV_lcm_capZ	80934
idealadd	83529
famat_mulpow_shallow	88235
p_makecoprime	94887
idealtwoelt	97572
RM_round_maxrank	98083
idealnorm	105665
idealinv	115786
get_random_a	117658
idealredmodpower_i	118354
nf_to_Fp_coprime	119854
to_Fp_coprime	123032
idealred0	138583
nf_get_Gtwist	138589
idealpseudomin	142449
famat_mulpows_shallow	147574
append	151941
famat_pows_shallow	151999
famat_add	158584
vecsqr	185983
famatsmall_reduce	189699
Q_to_famat	197124
famat_inv	199323
famat_div	200139
idealHNF_inv_Z	211911
famat_mul_shallow	224846
ok_elt	225014
idealHNF_factor	240087
mat_ideal_two_elt	250507
idealmulelt	266235
idealfactor	268261
idealfactor_limit	268688
idealHNF_Z_factor_i	293965
idealHNF_factor_i	293967
famat_reduce	304104
idealpows	313254
idealsqrprime	317351
Z_to_famat	376318
idealnumden	389702
famat_mul	447395
idealHNF_mul	473241
idealmul	511794
idealmul_aux	511794
ZM_famat_limit	568161
Z_cba	757267
idealaddtoone_raw	785716
idealhnf_two	802128
_idealaddtoone	803343
idealmulpowprime	825035
idealpow	941458
idealpow_aux	941459
idealHNF_mul_two	970489
Z_ppio	986062
idealpseudominvec	1250409
idealpowprime	1305366
idealpseudored	1342317
idealhnf_principal	1389559
lcmuu	1636873
idealhnf_shallow	1853708
famat_makecoprime	2218684
to_famat_shallow	2765842
pr_hnf	3799051
idealHNF_norm_pval	4101070
idealHNF_val	4238609
zk_pvalrem	4318918
nf_remove_denom_p	4364707
Fl_invgen	5895726
Z_cba_rec	6827597
idealval	9492158
vecmul	16000964
idealtyp	16231391
Z_ppo	18700675
u_ppo	54296026

Generated by: LCOV version 1.16