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 30558-88b7dc3357) Lines: 1696 1847 91.8 % Date: 2025-11-27 09:21:46 Functions: 170 185 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_invgen	5897717
Q_nffactor	28485
Q_to_famat	197112
RM_round_maxrank	98091
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	18702624
Z_to_famat	376306
_idealaddtoone	803379
_idealmulred	28591
_idealsqrred	35663
_mul	11370
_sqr	35663
addmul_mat	66763
append	154142
chk_vdir	21
err_divexact	7
ext_inv	20381
ext_mul	60786
ext_pow	0
ext_sqr	33885
factorbackprime	75596
famatV_factorback	13765
famatV_zv_factorback	56273
famat_Z_gcd	0
famat_add	160787
famat_div	200128
famat_div_shallow	10304
famat_idealfactor	0
famat_inv	199322
famat_inv_shallow	26945
famat_makecoprime	2220895
famat_mul	449586
famat_mul_shallow	224855
famat_mulpow_shallow	88237
famat_mulpows_shallow	147572
famat_pow	60642
famat_pow_shallow	61964
famat_pows_shallow	151998
famat_reduce	306316
famat_remove_trivial	66958
famat_sqr	22923
famat_sub	20927
famat_to_Fp_coprime	693
famat_to_nf	0
famat_to_nf_moddivisor	18606
famatsmall_reduce	189693
get_random_a	117658
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	293999
idealHNF_factor	240110
idealHNF_factor_i	294001
idealHNF_inv	69848
idealHNF_inv_Z	211905
idealHNF_mul	473300
idealHNF_mul_two	970611
idealHNF_norm_pval	4101110
idealHNF_val	4238704
idealadd	83536
idealaddmultoone	35
idealaddtoone	98
idealaddtoone0	70
idealaddtoone_i	17633
idealaddtoone_raw	785751
idealappr	14
idealappr0	14
idealapprfact	0
idealapprfact_i	54095
idealcoprime	84
idealcoprimefact	37191
idealdiv	39716
idealdiv0	56
idealdivexact	5221
idealdivpowprime	13007
idealdown	3031
idealfactor	268284
idealfactor_limit	268711
idealfactor_partial	25515
idealhnf	665
idealhnf0	413
idealhnf_principal	1391734
idealhnf_shallow	1855929
idealhnf_two	802258
idealintersect	21
idealinv	115785
idealismaximal	77
idealismaximal_i	77
idealismaximal_int	42
idealismaximal_mat	21
idealispower	3899
idealmin	7
idealmul	511798
idealmul0	70
idealmul_aux	511798
idealmulelt	266235
idealmulpowprime	825031
idealmulred	17221
idealnorm	105700
idealnumden	389730
idealpow	941584
idealpow0	2499
idealpow_aux	941584
idealpowprime	1305574
idealpowred	80206
idealpows	313276
idealprod	1064
idealprodprime	666
idealprodval	1917
idealpseudomin	142443
idealpseudomin_nonscalar	0
idealpseudominvec	1252510
idealpseudored	1344417
idealred0	138575
idealred_elt	13396
idealredmodpower	59190
idealredmodpower_i	118370
idealsqr	39149
idealsqr_aux	39149
idealsqrprime	317317
idealsqrtn_int	7742
idealtwoelt	97578
idealtwoelt0	2485
idealtwoelt2	42
idealtyp	16234071
idealval	9492185
in_ideal	28
isideal	91
lcmuu	1636664
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	138582
nf_get_Gtwist1	12597
nf_remove_denom_p	4371263
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	225027
p_makecoprime	94879
prV_e_muls	28495
prV_lcm_capZ	80962
prV_primes	66241
pr_hnf	3801278
pr_inv	17836
pr_inv_p	38485
pr_uniformizer	58448
ramified_root	7735
ramified_root_simple	7
sunits_makecoprime	98
to_Fp_coprime	123032
to_famat	0
to_famat_shallow	2768043
trivial_merge	28
twistG	12639
u_ppo	54295894
vec_mulid	91
vecdiv	903
vecinv	826
vecmul	16016383
vecpow	0
vecsqr	185983
zk_pvalrem	4325469

Generated by: LCOV version 1.16