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 30462-6c568f4018) Lines: 1696 1845 91.9 % Date: 2025-08-10 09:24:05 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	5895861
Q_nffactor	28487
Q_to_famat	197110
RM_round_maxrank	98084
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	18700511
Z_to_famat	376303
_idealaddtoone	803351
_idealmulred	28591
_idealsqrred	35663
_mul	11370
_sqr	35663
addmul_mat	66617
append	151936
chk_vdir	21
err_divexact	7
ext_inv	20377
ext_mul	60784
ext_pow	0
ext_sqr	33885
factorbackprime	75591
famatV_factorback	13765
famatV_zv_factorback	56272
famat_Z_gcd	0
famat_add	158579
famat_div	200125
famat_div_shallow	10304
famat_idealfactor	0
famat_inv	199317
famat_inv_shallow	26945
famat_makecoprime	2218678
famat_mul	447376
famat_mul_shallow	224839
famat_mulpow_shallow	88236
famat_mulpows_shallow	147571
famat_pow	60642
famat_pow_shallow	61963
famat_pows_shallow	151988
famat_reduce	304102
famat_remove_trivial	66930
famat_sqr	22923
famat_sub	20925
famat_to_Fp_coprime	693
famat_to_nf	0
famat_to_nf_moddivisor	18606
famatsmall_reduce	189690
get_random_a	117657
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	293965
idealHNF_factor	240087
idealHNF_factor_i	293966
idealHNF_inv	69848
idealHNF_inv_Z	211897
idealHNF_mul	473275
idealHNF_mul_two	970608
idealHNF_norm_pval	4101156
idealHNF_val	4238709
idealadd	83529
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17633
idealaddtoone_raw	785717
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	54096
idealcoprime	84
idealcoprimefact	37191
idealdiv	39716
idealdiv0	56
idealdivexact	5214
idealdivpowprime	13007
idealdown	3031
idealfactor	268267
idealfactor_limit	268695
idealfactor_partial	25515
idealhnf	665
idealhnf0	413
idealhnf_principal	1389562
idealhnf_shallow	1853719
idealhnf_two	802159
idealintersect	21
idealinv	115782
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3899
idealmin	7
idealmul	511800
idealmul0	70
idealmul_aux	511800
idealmulelt	266235
idealmulpowprime	825069
idealmulred	17221
idealnorm	105665
idealnumden	389712
idealpow	941501
idealpow0	2499
idealpow_aux	941499
idealpowprime	1305527
idealpowred	80205
idealpows	313265
idealprod	1064
idealprodprime	666
idealprodval	1917
idealpseudomin	142437
idealpseudomin_nonscalar	0
idealpseudominvec	1250411
idealpseudored	1342322
idealred0	138572
idealred_elt	13392
idealredmodpower	59185
idealredmodpower_i	118355
idealsqr	39149
idealsqr_aux	39149
idealsqrprime	317340
idealsqrtn_int	7742
idealtwoelt	97572
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	16231662
idealval	9492252
in_ideal	28
isideal	91
lcmuu	1636912
make_integral	10920
mat_ideal_two_elt	250501
mat_ideal_two_elt2	21
matreduce	63
nfV_eltembed	84
nfV_idealhnf	84
nf_coprime_part	126
nf_get_Gtwist	138579
nf_get_Gtwist1	12597
nf_remove_denom_p	4364751
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	224963
p_makecoprime	94897
prV_e_muls	28430
prV_lcm_capZ	80934
prV_primes	66234
pr_hnf	3799037
pr_inv	17833
pr_inv_p	38487
pr_uniformizer	58448
ramified_root	7735
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	123032
to_famat	0
to_famat_shallow	2765811
trivial_merge	28
twistG	12639
u_ppo	54296196
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	15995092
vecpow	0
vecsqr	185983
zk_pvalrem	4318959

Generated by: LCOV version 1.16