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 30658-0716cf3506) Lines: 839 988 84.9 %
Date: 2026-01-31 09:22:40 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 29898974
QM_QC_mul 126986
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598168
RgM_issquare 42
RgV_check_ZV 1501246
ZC_Q_mul 2758074
ZC_ZV_mul 0
ZC_Z_add 366768
ZC_Z_div 3676986
ZC_Z_divexact 5779648
ZC_Z_mul 36150906
ZC_Z_sub 0
ZC_add 27068907
ZC_add_i 37099609
ZC_copy 18146165
ZC_divexactu 2261
ZC_hnfdivrem 10697198
ZC_hnfdivrem_i 11324085
ZC_is_ei 174398
ZC_lincomb 34825945
ZC_lincomb1 16037106
ZC_lincomb1_inplace 64142469
ZC_lincomb1_inplace_i 75202750
ZC_lincomb_1 757751
ZC_modhnf 280
ZC_neg 6357904
ZC_reducemodlll 97982
ZC_reducemodmatrix 112290
ZC_reducemodmatrix_i 112290
ZC_sub 9094553
ZC_sub_i 9427087
ZC_z_mul 64353
ZMV_to_zmV 49
ZM_Q_mul 1140914
ZM_ZC_mul 25801576
ZM_ZC_mul_i 77646688
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530274
ZM_Z_mul 3381166
ZM_add 844452
ZM_copy 667053
ZM_det_triangular 4147628
ZM_diag_mul 578740
ZM_divexactu 441
ZM_equal 3499350
ZM_equal0 32292
ZM_hnfdivrem 491812
ZM_hnfdivrem_i 491827
ZM_isdiagonal 625475
ZM_ishnf 826638
ZM_isidentity 658148
ZM_isscalar 161847
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22661
ZM_max_lg_i 27716401
ZM_modhnf 14
ZM_mul 20964997
ZM_mul_classical 13782054
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21362211
ZM_mul_slice 1105
ZM_mul_sw 76375
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734134
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239853
ZM_reducemodmatrix_i 239854
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 156856
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959066
ZM_zc_mul_i 20027681
ZM_zm_mul 976879
ZMrow_ZC_mul 137954093
ZMrow_ZC_mul_i 599893245
ZMrow_equal0 16231
ZRED 1170601
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253729
ZV_content 300474
ZV_dotproduct 16641359
ZV_dotproduct_i 19471870
ZV_dotsquare 6859572
ZV_equal 293342
ZV_equal0 14715527
ZV_equal_lg 6517637
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 111656882
ZV_neg_inplace 391060
ZV_prod 8855783
ZV_sum 77
ZV_to_nv 496501
ZV_togglesign 5122733
ZV_zc_mul 2229556
Z_ZC_sub 584363
ZincrementalGS 1279171
Zupdate_row 402310
_ZM_mul 280
_ZM_sqr 24143
_mulii 319218123
add_slices 611000
check_ZV 1937487
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534625
sw_bound 13858425
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 157984
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19539032
zv_dotproduct 196399119
zv_equal 31000966
zv_equal0 23113176
zv_neg 51850
zv_neg_inplace 126
zv_prod 950948
zv_prod_Z 1922695
zv_sum 16511
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28639

Generated by: LCOV version 1.16