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: 2026-02-10 09:23:17 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 29899214
QM_QC_mul 127091
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598166
RgM_issquare 42
RgV_check_ZV 1501244
ZC_Q_mul 2758174
ZC_ZV_mul 0
ZC_Z_add 366775
ZC_Z_div 3676928
ZC_Z_divexact 5780290
ZC_Z_mul 36151457
ZC_Z_sub 0
ZC_add 27070914
ZC_add_i 37101017
ZC_copy 18147142
ZC_divexactu 2261
ZC_hnfdivrem 10696928
ZC_hnfdivrem_i 11323751
ZC_is_ei 174398
ZC_lincomb 34821824
ZC_lincomb1 16035913
ZC_lincomb1_inplace 64134320
ZC_lincomb1_inplace_i 75194046
ZC_lincomb_1 757615
ZC_modhnf 280
ZC_neg 6357629
ZC_reducemodlll 97985
ZC_reducemodmatrix 112294
ZC_reducemodmatrix_i 112294
ZC_sub 9094259
ZC_sub_i 9427411
ZC_z_mul 64350
ZMV_to_zmV 49
ZM_Q_mul 1140924
ZM_ZC_mul 25801528
ZM_ZC_mul_i 77643828
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530281
ZM_Z_mul 3381185
ZM_add 844476
ZM_copy 667155
ZM_det_triangular 4147548
ZM_diag_mul 578897
ZM_divexactu 441
ZM_equal 3499271
ZM_equal0 32306
ZM_hnfdivrem 491813
ZM_hnfdivrem_i 491831
ZM_isdiagonal 625482
ZM_ishnf 826632
ZM_isidentity 658096
ZM_isscalar 161774
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22662
ZM_max_lg_i 27715169
ZM_modhnf 14
ZM_mul 20964101
ZM_mul_classical 13781544
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21361373
ZM_mul_slice 1104
ZM_mul_sw 76376
ZM_mul_worker 1104
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734034
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23617
ZM_reducemodlll 0
ZM_reducemodmatrix 239854
ZM_reducemodmatrix_i 239854
ZM_sqr 25220
ZM_sqr_fast 0
ZM_sqr_i 25220
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 156972
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17958995
ZM_zc_mul_i 20028194
ZM_zm_mul 976992
ZMrow_ZC_mul 137950776
ZMrow_ZC_mul_i 599909761
ZMrow_equal0 16231
ZRED 1170533
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253725
ZV_content 300474
ZV_dotproduct 16640982
ZV_dotproduct_i 19471537
ZV_dotsquare 6859353
ZV_equal 293348
ZV_equal0 14716466
ZV_equal_lg 6517611
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 111652896
ZV_neg_inplace 391081
ZV_prod 8855977
ZV_sum 77
ZV_to_nv 496633
ZV_togglesign 5125636
ZV_zc_mul 2229556
Z_ZC_sub 584378
ZincrementalGS 1279216
Zupdate_row 402298
_ZM_mul 280
_ZM_sqr 24142
_mulii 319218148
add_slices 611008
check_ZV 1937486
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534632
sw_bound 13857921
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 158098
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19537943
zv_dotproduct 196399119
zv_equal 31000813
zv_equal0 23113176
zv_neg 51865
zv_neg_inplace 126
zv_prod 951172
zv_prod_Z 1922685
zv_sum 16511
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28661

Generated by: LCOV version 1.16