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 30533-8058244a47) Lines: 1696 1845 91.9 % Date: 2025-10-25 09:13:26 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	5897601
Q_nffactor	28491
Q_to_famat	197120
RM_round_maxrank	98090
ZM_famat_limit	568160
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	18703232
Z_to_famat	376312
_idealaddtoone	803348
_idealmulred	28592
_idealsqrred	35665
_mul	11371
_sqr	35665
addmul_mat	66763
append	154146
chk_vdir	21
err_divexact	7
ext_inv	20380
ext_mul	60790
ext_pow	0
ext_sqr	33887
factorbackprime	75586
famatV_factorback	13765
famatV_zv_factorback	56273
famat_Z_gcd	0
famat_add	160790
famat_div	200132
famat_div_shallow	10304
famat_idealfactor	0
famat_inv	199319
famat_inv_shallow	26945
famat_makecoprime	2219800
famat_mul	449596
famat_mul_shallow	224850
famat_mulpow_shallow	88239
famat_mulpows_shallow	147570
famat_pow	60642
famat_pow_shallow	61966
famat_pows_shallow	151997
famat_reduce	306308
famat_remove_trivial	66951
famat_sqr	22925
famat_sub	20933
famat_to_Fp_coprime	693
famat_to_nf	0
famat_to_nf_moddivisor	18606
famatsmall_reduce	189699
get_random_a	117656
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	293928
idealHNF_factor	240046
idealHNF_factor_i	293927
idealHNF_inv	69849
idealHNF_inv_Z	211909
idealHNF_mul	473332
idealHNF_mul_two	970658
idealHNF_norm_pval	4101144
idealHNF_val	4238625
idealadd	83529
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17633
idealaddtoone_raw	785708
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	54096
idealcoprime	84
idealcoprimefact	37191
idealdiv	39716
idealdiv0	56
idealdivexact	5214
idealdivpowprime	12958
idealdown	3031
idealfactor	268230
idealfactor_limit	268660
idealfactor_partial	25515
idealhnf	665
idealhnf0	413
idealhnf_principal	1391704
idealhnf_shallow	1855863
idealhnf_two	802244
idealintersect	21
idealinv	115785
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3899
idealmin	7
idealmul	511792
idealmul0	70
idealmul_aux	511792
idealmulelt	266235
idealmulpowprime	824988
idealmulred	17221
idealnorm	105679
idealnumden	389671
idealpow	941584
idealpow0	2499
idealpow_aux	941583
idealpowprime	1305596
idealpowred	80208
idealpows	313266
idealprod	1064
idealprodprime	666
idealprodval	1917
idealpseudomin	142449
idealpseudomin_nonscalar	0
idealpseudominvec	1252511
idealpseudored	1344419
idealred0	138581
idealred_elt	13395
idealredmodpower	59185
idealredmodpower_i	118356
idealsqr	39151
idealsqr_aux	39151
idealsqrprime	317338
idealsqrtn_int	7742
idealtwoelt	97576
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	16232247
idealval	9491719
in_ideal	28
isideal	91
lcmuu	1636738
make_integral	10920
mat_ideal_two_elt	250508
mat_ideal_two_elt2	21
matreduce	63
nfV_eltembed	84
nfV_idealhnf	84
nf_coprime_part	126
nf_get_Gtwist	138588
nf_get_Gtwist1	12597
nf_remove_denom_p	4370282
nf_to_Fp_coprime	119854
nfdivmodpr	0
nfkermodpr	0
nfmulmodpr	7
nfpowmodpr	0
nfsolvemodpr	0
nfweilheight	84
nfweilheight_i	84
not_in_ideal	14
ok_elt	225028
p_makecoprime	94895
prV_e_muls	28488
prV_lcm_capZ	80962
prV_primes	66234
pr_hnf	3801158
pr_inv	17835
pr_inv_p	38487
pr_uniformizer	58450
ramified_root	7735
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	123032
to_famat	0
to_famat_shallow	2766947
trivial_merge	28
twistG	12639
u_ppo	54295915
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	1404880
vecpow	0
vecsqr	24633
zk_pvalrem	4324462

Generated by: LCOV version 1.16