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 30657-d14c2a9e4e) Lines: 839 988 84.9 %
Date: 2026-01-30 09:23:18 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 29898789
QM_QC_mul 126986
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598159
RgM_issquare 42
RgV_check_ZV 1501244
ZC_Q_mul 2758076
ZC_ZV_mul 0
ZC_Z_add 366782
ZC_Z_div 3676996
ZC_Z_divexact 5779649
ZC_Z_mul 36155479
ZC_Z_sub 0
ZC_add 27073547
ZC_add_i 37103847
ZC_copy 18146759
ZC_divexactu 2261
ZC_hnfdivrem 10697071
ZC_hnfdivrem_i 11323937
ZC_is_ei 174398
ZC_lincomb 34825177
ZC_lincomb1 16037032
ZC_lincomb1_inplace 64137181
ZC_lincomb1_inplace_i 75195359
ZC_lincomb_1 757649
ZC_modhnf 280
ZC_neg 6357596
ZC_reducemodlll 97985
ZC_reducemodmatrix 112298
ZC_reducemodmatrix_i 112298
ZC_sub 9094273
ZC_sub_i 9427105
ZC_z_mul 64354
ZMV_to_zmV 49
ZM_Q_mul 1140926
ZM_ZC_mul 25800717
ZM_ZC_mul_i 77642448
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530249
ZM_Z_mul 3381183
ZM_add 844453
ZM_copy 667085
ZM_det_triangular 4147566
ZM_diag_mul 578765
ZM_divexactu 441
ZM_equal 3499314
ZM_equal0 32292
ZM_hnfdivrem 491815
ZM_hnfdivrem_i 491829
ZM_isdiagonal 625507
ZM_ishnf 826628
ZM_isidentity 658077
ZM_isscalar 161831
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22662
ZM_max_lg_i 27715154
ZM_modhnf 14
ZM_mul 20964301
ZM_mul_classical 13781481
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21361539
ZM_mul_slice 1105
ZM_mul_sw 76375
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734035
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239855
ZM_reducemodmatrix_i 239856
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 156921
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17958925
ZM_zc_mul_i 20027893
ZM_zm_mul 976941
ZMrow_ZC_mul 137953652
ZMrow_ZC_mul_i 599864735
ZMrow_equal0 16231
ZRED 1170611
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253711
ZV_content 300474
ZV_dotproduct 16640709
ZV_dotproduct_i 19471518
ZV_dotsquare 6859563
ZV_equal 293360
ZV_equal0 14715075
ZV_equal_lg 6517634
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 111649503
ZV_neg_inplace 391077
ZV_prod 8855825
ZV_sum 77
ZV_to_nv 496493
ZV_togglesign 5124657
ZV_zc_mul 2229556
Z_ZC_sub 584391
ZincrementalGS 1279238
Zupdate_row 402303
_ZM_mul 280
_ZM_sqr 24143
_mulii 319218614
add_slices 611000
check_ZV 1937476
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534625
sw_bound 13857849
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 158048
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19538852
zv_dotproduct 196399119
zv_equal 31000789
zv_equal0 23113180
zv_neg 51872
zv_neg_inplace 126
zv_prod 950950
zv_prod_Z 1922690
zv_sum 16511
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28671

Generated by: LCOV version 1.16