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 30702-bddb8d6928) Lines: 1696 1847 91.8 % Date: 2026-02-23 02:23:56 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	6
hnf_QC_QC	6
idealmin	6
nfmulmodpr	6
ramified_root_simple	6
idealappr	12
idealappr0	12
not_in_ideal	12
chk_vdir	18
hnf_Q_Q	18
idealintersect	18
idealismaximal_mat	18
mat_ideal_two_elt2	18
ZV_cba	24
in_ideal	24
trivial_merge	24
idealaddmultoone	30
idealismaximal_int	36
idealtwoelt2	36
ZV_cba_extend	41
idealdiv0	48
matreduce	54
hnf_Z_QC	58
idealmul0	59
idealaddtoone0	60
nfV_eltembed	60
nfV_idealhnf	60
nfweilheight	60
nfweilheight_i	60
hnf_Q_QC	64
hnf_Z_ZC	64
idealcoprime	65
idealismaximal	66
idealismaximal_i	66
vec_mulid	66
idealaddtoone	77
isideal	78
sunits_makecoprime	84
nf_coprime_part	108
gpidealfactor	162
idealhnf0	350
famat_to_Fp_coprime	560
idealhnf	563
idealprodprime	571
vecdiv	645
vecinv	708
idealprod	888
idealprodval	1538
idealtwoelt0	2130
idealpow0	2142
idealdown	2569
idealispower	3325
idealdivexact	4471
gpidealval	6102
ramified_root	6597
idealsqrtn_int	6603
famat_div_shallow	8083
make_integral	9352
_mul	9508
nf_get_Gtwist1	10768
twistG	10804
idealdivpowprime	11052
famatV_factorback	11343
idealred_elt	11515
idealmulred	14201
idealaddtoone_i	14286
pr_inv	15200
famat_to_nf_moddivisor	15934
ext_inv	17386
famat_sub	17803
famat_sqr	19500
famat_inv_shallow	20510
idealfactor_partial	21816
_idealmulred	23709
Q_nffactor	24297
prV_e_muls	24358
ext_sqr	28233
_idealsqrred	29731
_sqr	29731
idealcoprimefact	31392
idealdiv	32052
pr_inv_p	32256
idealsqr	32711
idealsqr_aux	32711
idealapprfact_i	45597
famatV_zv_factorback	48105
famat_pow_shallow	48395
pr_uniformizer	48978
ext_mul	50455
idealredmodpower	50644
famat_pow	51979
addmul_mat	54985
famat_remove_trivial	56589
prV_primes	56710
idealHNF_inv	56955
factorbackprime	64360
idealpowred	67510
idealadd	68332
prV_lcm_capZ	68605
famat_mulpow_shallow	71275
p_makecoprime	74284
idealtwoelt	82785
RM_round_maxrank	83483
idealnorm	90248
idealinv	94006
get_random_a	95212
nf_to_Fp_coprime	101025
idealredmodpower_i	101276
to_Fp_coprime	102866
idealred0	116327
nf_get_Gtwist	116333
idealpseudomin	120233
famat_mulpows_shallow	125213
famat_pows_shallow	128345
append	131877
famat_add	137587
famatsmall_reduce	139958
Q_to_famat	156893
famat_inv	158929
vecsqr	159414
famat_div	159549
idealHNF_inv_Z	177206
ok_elt	184825
famat_mul_shallow	185936
mat_ideal_two_elt	204038
idealHNF_factor	205012
idealmulelt	211703
idealfactor	229052
idealfactor_limit	229414
idealHNF_Z_factor_i	251162
idealHNF_factor_i	251162
famat_reduce	260288
idealpows	267981
idealsqrprime	271190
Z_to_famat	298633
idealnumden	333156
famat_mul	373080
idealHNF_mul	396628
idealmul	414277
idealmul_aux	414277
ZM_famat_limit	486599
Z_cba	649079
idealaddtoone_raw	672073
idealhnf_two	684967
_idealaddtoone	686359
idealmulpowprime	706289
idealpow	794795
idealpow_aux	794795
idealHNF_mul_two	826083
Z_ppio	845128
idealpseudominvec	1052559
idealpowprime	1118301
idealpseudored	1130891
idealhnf_principal	1176454
lcmuu	1377709
idealhnf_shallow	1577715
famat_makecoprime	1878149
to_famat_shallow	2333572
pr_hnf	3232242
idealHNF_norm_pval	3569841
zk_pvalrem	3604764
nf_remove_denom_p	3639031
idealHNF_val	3685896
Fl_invgen	4963172
Z_cba_rec	5852217
idealval	8248864
vecmul	13816343
idealtyp	13922448
Z_ppo	16186907
u_ppo	42136020

Generated by: LCOV version 1.16