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 30590-f14e077362) Lines: 1697 1847 91.9 % Date: 2026-01-01 09:21:12 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	5897952
Q_nffactor	28496
Q_to_famat	197171
RM_round_maxrank	97985
ZM_famat_limit	568161
ZV_cba	28
ZV_cba_extend	49
Z_cba	757267
Z_cba_rec	6827597
Z_dcba_rec	0
Z_ppgle	0
Z_ppio	986062
Z_ppo	18839010
Z_to_famat	376398
_idealaddtoone	803199
_idealmulred	28598
_idealsqrred	35755
_mul	11377
_sqr	35755
addmul_mat	66611
append	154199
chk_vdir	21
err_divexact	7
ext_inv	20402
ext_mul	60592
ext_pow	0
ext_sqr	33942
factorbackprime	75598
famatV_factorback	13807
famatV_zv_factorback	56272
famat_Z_gcd	0
famat_add	160829
famat_div	200213
famat_div_shallow	10304
famat_idealfactor	0
famat_inv	199376
famat_inv_shallow	26945
famat_makecoprime	2220939
famat_mul	449706
famat_mul_shallow	225088
famat_mulpow_shallow	88321
famat_mulpows_shallow	147668
famat_pow	60642
famat_pow_shallow	62013
famat_pows_shallow	152035
famat_reduce	306358
famat_remove_trivial	66992
famat_sqr	22980
famat_sub	20979
famat_to_Fp_coprime	693
famat_to_nf	0
famat_to_nf_moddivisor	18606
famatsmall_reduce	184684
get_random_a	117742
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	293990
idealHNF_factor	240101
idealHNF_factor_i	293991
idealHNF_inv	69877
idealHNF_inv_Z	211961
idealHNF_mul	473393
idealHNF_mul_two	971111
idealHNF_norm_pval	4214852
idealHNF_val	4352512
idealadd	83578
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17633
idealaddtoone_raw	785570
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	54082
idealcoprime	84
idealcoprimefact	37191
idealdiv	39744
idealdiv0	56
idealdivexact	5263
idealdivpowprime	13007
idealdown	3031
idealfactor	268294
idealfactor_limit	268721
idealfactor_partial	25515
idealhnf	665
idealhnf0	413
idealhnf_principal	1391758
idealhnf_shallow	1855856
idealhnf_two	801932
idealintersect	21
idealinv	115834
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3906
idealmin	7
idealmul	512006
idealmul0	70
idealmul_aux	512006
idealmulelt	266221
idealmulpowprime	825313
idealmulred	17221
idealnorm	105784
idealnumden	389737
idealpow	941531
idealpow0	2499
idealpow_aux	941528
idealpowprime	1305720
idealpowred	80040
idealpows	313347
idealprod	1064
idealprodprime	666
idealprodval	1917
idealpseudomin	142458
idealpseudomin_nonscalar	0
idealpseudominvec	1252848
idealpseudored	1344754
idealred0	138516
idealred_elt	13400
idealredmodpower	59190
idealredmodpower_i	118370
idealsqr	39241
idealsqr_aux	39241
idealsqrprime	317388
idealsqrtn_int	7756
idealtwoelt	97403
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	16469633
idealval	9727412
in_ideal	28
isideal	91
lcmuu	1636744
make_integral	10920
mat_ideal_two_elt	250539
mat_ideal_two_elt2	21
matreduce	63
nfV_eltembed	84
nfV_idealhnf	84
nf_coprime_part	126
nf_get_Gtwist	138523
nf_get_Gtwist1	12667
nf_remove_denom_p	4376230
nf_to_Fp_coprime	119826
nfdivmodpr	0
nfkermodpr	0
nfmulmodpr	7
nfpowmodpr	0
nfsolvemodpr	0
nfweilheight	84
nfweilheight_i	84
not_in_ideal	14
ok_elt	225095
p_makecoprime	94896
prV_e_muls	28505
prV_lcm_capZ	80948
prV_primes	66234
pr_hnf	3801266
pr_inv	17849
pr_inv_p	38347
pr_uniformizer	58379
ramified_root	7749
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	123004
to_famat	0
to_famat_shallow	2768193
trivial_merge	28
twistG	12709
u_ppo	54295435
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	15989732
vecpow	0
vecsqr	185983
zk_pvalrem	4330421

Generated by: LCOV version 1.16