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 - ZV.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30674-be81ecfdd4) Lines: 839 988 84.9 %
Date: 2026-02-13 09:23:38 Functions: 131 149 87.9 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Flc_lincomb1_inplace 29901307
QM_QC_mul 127091
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598160
RgM_issquare 42
RgV_check_ZV 1501239
ZC_Q_mul 2758179
ZC_ZV_mul 0
ZC_Z_add 366789
ZC_Z_div 3676998
ZC_Z_divexact 5780483
ZC_Z_mul 36156200
ZC_Z_sub 0
ZC_add 27073258
ZC_add_i 37103967
ZC_copy 18148061
ZC_divexactu 2261
ZC_hnfdivrem 10697103
ZC_hnfdivrem_i 11323925
ZC_is_ei 174398
ZC_lincomb 34823281
ZC_lincomb1 16036612
ZC_lincomb1_inplace 64141853
ZC_lincomb1_inplace_i 75202076
ZC_lincomb_1 757633
ZC_modhnf 280
ZC_neg 6357590
ZC_reducemodlll 97985
ZC_reducemodmatrix 112296
ZC_reducemodmatrix_i 112296
ZC_sub 9094271
ZC_sub_i 9427369
ZC_z_mul 64348
ZMV_to_zmV 49
ZM_Q_mul 1140921
ZM_ZC_mul 25801886
ZM_ZC_mul_i 77644013
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530280
ZM_Z_mul 3381174
ZM_add 844442
ZM_copy 667208
ZM_det_triangular 4147707
ZM_diag_mul 578918
ZM_divexactu 441
ZM_equal 3499359
ZM_equal0 32306
ZM_hnfdivrem 491782
ZM_hnfdivrem_i 491797
ZM_isdiagonal 625507
ZM_ishnf 826639
ZM_isidentity 658049
ZM_isscalar 161797
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22662
ZM_max_lg_i 27715194
ZM_modhnf 14
ZM_mul 20964391
ZM_mul_classical 13781511
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21361509
ZM_mul_slice 1102
ZM_mul_sw 76376
ZM_mul_worker 1102
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734020
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239866
ZM_reducemodmatrix_i 239866
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 157026
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959054
ZM_zc_mul_i 20028399
ZM_zm_mul 977050
ZMrow_ZC_mul 137953337
ZMrow_ZC_mul_i 599916976
ZMrow_equal0 16231
ZRED 1170599
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253664
ZV_content 300477
ZV_dotproduct 16640933
ZV_dotproduct_i 19471386
ZV_dotsquare 6859427
ZV_equal 293361
ZV_equal0 14716495
ZV_equal_lg 6517682
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 111650803
ZV_neg_inplace 391078
ZV_prod 8856034
ZV_sum 77
ZV_to_nv 496640
ZV_togglesign 5126668
ZV_zc_mul 2229556
Z_ZC_sub 584380
ZincrementalGS 1279251
Zupdate_row 402307
_ZM_mul 280
_ZM_sqr 24143
_mulii 319219235
add_slices 611008
check_ZV 1937477
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534632
sw_bound 13857869
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 158155
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19537578
zv_dotproduct 196399119
zv_equal 31000811
zv_equal0 23113184
zv_neg 51876
zv_neg_inplace 126
zv_prod 951141
zv_prod_Z 1922691
zv_sum 16515
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28678

Generated by: LCOV version 1.16