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 30849-48ff4d246c) Lines: 839 988 84.9 %
Date: 2026-05-01 09:26:53 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 29897125
QM_QC_mul 125451
QM_mul 559148
QM_sqr 700
RgM_check_ZM 598586
RgM_issquare 42
RgV_check_ZV 1501284
ZC_Q_mul 2801930
ZC_ZV_mul 0
ZC_Z_add 370262
ZC_Z_div 3676878
ZC_Z_divexact 5875920
ZC_Z_mul 36176118
ZC_Z_sub 0
ZC_add 27083572
ZC_add_i 37115031
ZC_copy 18808323
ZC_divexactu 2261
ZC_hnfdivrem 10696876
ZC_hnfdivrem_i 11402713
ZC_is_ei 174398
ZC_lincomb 34910543
ZC_lincomb1 16044977
ZC_lincomb1_inplace 65759617
ZC_lincomb1_inplace_i 76818484
ZC_lincomb_1 760164
ZC_modhnf 280
ZC_neg 6363998
ZC_reducemodlll 97976
ZC_reducemodmatrix 112291
ZC_reducemodmatrix_i 112291
ZC_sub 9157431
ZC_sub_i 9573538
ZC_z_mul 64369
ZMV_to_zmV 49
ZM_Q_mul 1163589
ZM_ZC_mul 25800832
ZM_ZC_mul_i 78990493
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530700
ZM_Z_mul 3381978
ZM_add 844619
ZM_copy 744282
ZM_det_triangular 4267568
ZM_diag_mul 592998
ZM_divexactu 441
ZM_equal 3500548
ZM_equal0 32306
ZM_hnfdivrem 529453
ZM_hnfdivrem_i 529468
ZM_isdiagonal 677138
ZM_ishnf 878285
ZM_isidentity 658143
ZM_isscalar 161824
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22788
ZM_max_lg_i 27921970
ZM_modhnf 14
ZM_mul 21116025
ZM_mul_classical 13884828
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21513854
ZM_mul_slice 1105
ZM_mul_sw 76372
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734007
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23616
ZM_reducemodlll 0
ZM_reducemodmatrix 239854
ZM_reducemodmatrix_i 239854
ZM_sqr 25219
ZM_sqr_fast 0
ZM_sqr_i 25219
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181680
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959117
ZM_zc_mul_i 20111305
ZM_zm_mul 1001651
ZMrow_ZC_mul 137968466
ZMrow_ZC_mul_i 604390880
ZMrow_equal0 16231
ZRED 1170500
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3254331
ZV_content 300480
ZV_dotproduct 16644459
ZV_dotproduct_i 19473901
ZV_dotsquare 6861770
ZV_equal 293360
ZV_equal0 15014119
ZV_equal_lg 6519117
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114370800
ZV_neg_inplace 391303
ZV_prod 8856016
ZV_sum 77
ZV_to_nv 431575
ZV_togglesign 7279976
ZV_zc_mul 2229556
Z_ZC_sub 584367
ZincrementalGS 1279183
Zupdate_row 402224
_ZM_mul 280
_ZM_sqr 24141
_mulii 319251169
add_slices 610976
check_ZV 1939054
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534604
sw_bound 13961201
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 183764
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19544486
zv_dotproduct 196399119
zv_equal 67992560
zv_equal0 23113593
zv_neg 51871
zv_neg_inplace 126
zv_prod 951615
zv_prod_Z 1974609
zv_sum 16515
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28756

Generated by: LCOV version 1.16