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:

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 30483-b6b1f87815) Lines: 1696 1845 91.9 %
Date: 2025-09-12 09:24:16 Functions: 170 185 91.9 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by 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
idealismaximal_int 42
idealtwoelt2 42
ZV_cba_extend 49
idealdiv0 56
matreduce 63
hnf_Z_QC 70
idealaddtoone0 70
idealmul0 70
hnf_Q_QC 77
hnf_Z_ZC 77
idealismaximal 77
idealismaximal_i 77
idealcoprime 84
nfV_eltembed 84
nfV_idealhnf 84
nfweilheight 84
nfweilheight_i 84
isideal 91
vec_mulid 91
idealaddtoone 98
sunits_makecoprime 98
nf_coprime_part 126
gpidealfactor 189
idealhnf0 413
idealhnf 665
idealprodprime 666
famat_to_Fp_coprime 693
vecinv 826
vecdiv 903
idealprod 1064
idealprodval 1917
idealtwoelt0 2485
idealpow0 2499
idealdown 3031
idealispower 3899
idealdivexact 5214
gpidealval 7119
ramified_root 7735
idealsqrtn_int 7742
famat_div_shallow 10304
make_integral 10920
_mul 11370
nf_get_Gtwist1 12597
twistG 12639
idealdivpowprime 13007
idealred_elt 13394
famatV_factorback 13765
idealmulred 17221
idealaddtoone_i 17633
pr_inv 17836
famat_to_nf_moddivisor 18606
ext_inv 20382
famat_sub 20932
famat_sqr 22925
idealfactor_partial 25515
famat_inv_shallow 26945
prV_e_muls 28491
Q_nffactor 28501
_idealmulred 28591
ext_sqr 33887
_idealsqrred 35665
_sqr 35665
idealcoprimefact 37191
pr_inv_p 38485
idealsqr 39151
idealsqr_aux 39151
idealdiv 39716
idealapprfact_i 54095
famatV_zv_factorback 56273
pr_uniformizer 58449
idealredmodpower 59185
famat_pow 60642
ext_mul 60788
famat_pow_shallow 61964
prV_primes 66234
addmul_mat 66652
famat_remove_trivial 66928
idealHNF_inv 69849
factorbackprime 75591
idealpowred 80207
prV_lcm_capZ 80933
idealadd 83529
famat_mulpow_shallow 88237
p_makecoprime 94889
idealtwoelt 97572
RM_round_maxrank 98084
idealnorm 105665
idealinv 115786
get_random_a 117658
idealredmodpower_i 118355
nf_to_Fp_coprime 119854
to_Fp_coprime 123032
idealred0 138580
nf_get_Gtwist 138587
idealpseudomin 142447
famat_mulpows_shallow 147573
append 151938
famat_pows_shallow 152003
famat_add 158585
vecsqr 185983
famatsmall_reduce 189705
Q_to_famat 197119
famat_inv 199324
famat_div 200134
idealHNF_inv_Z 211907
famat_mul_shallow 224852
ok_elt 224966
idealHNF_factor 240089
mat_ideal_two_elt 250506
idealmulelt 266235
idealfactor 268280
idealfactor_limit 268708
idealHNF_Z_factor_i 293962
idealHNF_factor_i 293963
famat_reduce 304104
idealpows 313245
idealsqrprime 317337
Z_to_famat 376314
idealnumden 389710
famat_mul 447391
idealHNF_mul 473236
idealmul 511789
idealmul_aux 511789
ZM_famat_limit 568161
Z_cba 757267
idealaddtoone_raw 785729
idealhnf_two 802130
_idealaddtoone 803355
idealmulpowprime 825048
idealpow 941458
idealpow_aux 941459
idealHNF_mul_two 970504
Z_ppio 986062
idealpseudominvec 1250405
idealpowprime 1305483
idealpseudored 1342310
idealhnf_principal 1389564
lcmuu 1636721
idealhnf_shallow 1853731
famat_makecoprime 2218685
to_famat_shallow 2765834
pr_hnf 3799100
idealHNF_norm_pval 4100942
idealHNF_val 4238496
zk_pvalrem 4318894
nf_remove_denom_p 4364695
Fl_invgen 5895546
Z_cba_rec 6827597
idealval 9492004
vecmul 16010865
idealtyp 16231433
Z_ppo 18700365
u_ppo 54296029

Generated by: LCOV version 1.16