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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31057-89c4d54ba6) Lines: 91.8 % 1852 1701 Test Date: 2026-07-25 17:02:42 Functions: 92.0 % 187 172 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	7
hnf_QC_QC	7
idealmin	7
nfmulmodpr	7
ramified_root_simple	7
idealappr	14
idealappr0	14
not_in_ideal	14
chk_vdir	21
hnf_Q_Q	21
idealintersect	21
idealismaximal_mat	21
mat_ideal_two_elt2	21
ZV_cba	28
in_ideal	28
trivial_merge	28
idealaddmultoone	35
idealfromgens	42
idealismaximal_int	42
idealtwoelt2	42
ZV_cba_extend	49
idealdiv0	56
hnf_Z_QC	70
idealaddtoone0	70
idealmul0	70
hnf_Q_QC	77
hnf_Z_ZC	77
idealismaximal	77
idealismaximal_i	77
matreduce	77
idealcoprime	84
nfV_eltembed	84
nfweilheight	84
nfweilheight_i	84
isideal	91
idealaddtoone	98
sunits_makecoprime	98
nf_coprime_part	126
gpidealfactor	189
idealhnf0	413
nfV_idealhnf	448
nfV_to_ZM	448
vec_mulid	455
famat_to_Fp_coprime	665
idealhnf	665
idealprodprime	666
vecinv	826
vecdiv	903
idealprod	1064
idealprodval	1917
idealtwoelt0	2485
idealpow0	2499
idealdown	3031
idealispower	3906
idealdivexact	5263
gpidealval	7119
ramified_root	7749
idealsqrtn_int	7756
famat_div_shallow	10311
make_integral	10920
_mul	11384
nf_get_Gtwist1	12667
twistG	12709
idealdivpowprime	13007
idealred_elt	13190
famatV_factorback	13814
idealmulred	17221
idealaddtoone_i	17633
pr_inv	17866
famat_to_nf_moddivisor	18606
ext_inv	20410
famat_sub	20909
famat_sqr	22985
idealfactor_partial	25515
famat_inv_shallow	26947
Q_nffactor	28532
prV_e_muls	28588
_idealmulred	28605
ext_sqr	33947
_idealsqrred	35760
_sqr	35760
idealcoprimefact	37191
pr_inv_p	38688
idealsqr	39246
idealsqr_aux	39246
idealdiv	39744
idealapprfact_i	54089
famatV_zv_factorback	56273
pr_uniformizer	58441
idealredmodpower	59192
famat_pow	60642
ext_mul	61064
famat_pow_shallow	62032
prV_primes	66234
addmul_mat	66690
famat_remove_trivial	67007
idealHNF_inv	69868
factorbackprime	75625
idealpowred	80389
prV_lcm_capZ	81194
idealadd	83578
famat_mulpow_shallow	88347
p_makecoprime	95076
idealtwoelt	97948
RM_round_maxrank	98530
idealnorm	106058
idealinv	115842
get_random_a	118265
idealredmodpower_i	118370
nf_to_Fp_coprime	119798
to_Fp_coprime	122255
idealred0	139185
nf_get_Gtwist	139192
idealpseudomin	142672
famat_mulpows_shallow	147672
famat_pows_shallow	151894
append	155938
famat_add	162633
famatsmall_reduce	185897
vecsqr	185983
Q_to_famat	197084
famat_inv	199361
famat_div	200120
idealHNF_inv_Z	212271
famat_mul_shallow	224919
ok_elt	226243
idealHNF_factor	240113
mat_ideal_two_elt	251106
idealmulelt	266228
idealfactor	268344
idealfactor_limit	268771
idealHNF_Z_factor_i	294023
idealHNF_factor_i	294023
famat_reduce	308206
idealpows	313409
idealsqrprime	317518
Z_to_famat	376288
idealnumden	389759
famat_mul	451456
idealHNF_mul	474445
idealmul	512065
idealmul_aux	512065
ZM_famat_limit	568151
Z_cba	757372
idealaddtoone_raw	785631
_idealaddtoone	803264
idealhnf_two	803486
idealmulpowprime	828131
idealpow	942037
idealpow_aux	942037
idealHNF_mul_two	975082
Z_ppio	986167
idealpseudominvec	1254117
idealpowprime	1309115
idealpseudored	1346029
idealhnf_principal	1393280
lcmuu	1644520
idealhnf_shallow	1857434
famat_makecoprime	2220969
to_famat_shallow	2769795
pr_hnf	3803291
idealHNF_norm_pval	4247921
zk_pvalrem	4331961
nf_remove_denom_p	4377789
idealHNF_val	4385146
Fl_invgen	5915988
Z_cba_rec	6828640
idealval	9806981
vecmul	16133702
idealtyp	16553886
Z_ppo	19281001
u_ppo	54305086

Generated by: LCOV version 2.0-1