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 30718-589d22da69) Lines: 839 988 84.9 %
Date: 2026-02-27 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 29901763
QM_QC_mul 127091
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598172
RgM_issquare 42
RgV_check_ZV 1501253
ZC_Q_mul 2758175
ZC_ZV_mul 0
ZC_Z_add 366773
ZC_Z_div 3676947
ZC_Z_divexact 5874671
ZC_Z_mul 36155990
ZC_Z_sub 0
ZC_add 27072415
ZC_add_i 37102633
ZC_copy 18799453
ZC_divexactu 2261
ZC_hnfdivrem 10696961
ZC_hnfdivrem_i 11402890
ZC_is_ei 174398
ZC_lincomb 34904480
ZC_lincomb1 16042778
ZC_lincomb1_inplace 65753317
ZC_lincomb1_inplace_i 76813481
ZC_lincomb_1 759696
ZC_modhnf 280
ZC_neg 6357641
ZC_reducemodlll 97982
ZC_reducemodmatrix 112298
ZC_reducemodmatrix_i 112298
ZC_sub 9156807
ZC_sub_i 9572486
ZC_z_mul 64352
ZMV_to_zmV 49
ZM_Q_mul 1140899
ZM_ZC_mul 25801804
ZM_ZC_mul_i 78985420
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530280
ZM_Z_mul 3381224
ZM_add 844421
ZM_copy 743450
ZM_det_triangular 4267350
ZM_diag_mul 592931
ZM_divexactu 441
ZM_equal 3499457
ZM_equal0 32306
ZM_hnfdivrem 529450
ZM_hnfdivrem_i 529466
ZM_isdiagonal 677179
ZM_ishnf 878300
ZM_isidentity 658089
ZM_isscalar 161846
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22662
ZM_max_lg_i 27917775
ZM_modhnf 14
ZM_mul 21113682
ZM_mul_classical 13882696
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21510934
ZM_mul_slice 1104
ZM_mul_sw 76376
ZM_mul_worker 1104
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734002
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239850
ZM_reducemodmatrix_i 239849
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181540
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959524
ZM_zc_mul_i 20111248
ZM_zm_mul 1001562
ZMrow_ZC_mul 137954717
ZMrow_ZC_mul_i 604371486
ZMrow_equal0 16231
ZRED 1170502
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253687
ZV_content 300471
ZV_dotproduct 16640816
ZV_dotproduct_i 19471440
ZV_dotsquare 6859362
ZV_equal 293329
ZV_equal0 15008224
ZV_equal_lg 6517645
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114354167
ZV_neg_inplace 391104
ZV_prod 8855946
ZV_sum 77
ZV_to_nv 431552
ZV_togglesign 7273365
ZV_zc_mul 2229556
Z_ZC_sub 584349
ZincrementalGS 1279186
Zupdate_row 402316
_ZM_mul 280
_ZM_sqr 24143
_mulii 318938475
add_slices 611008
check_ZV 1937495
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534632
sw_bound 13959112
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 182665
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19539862
zv_dotproduct 196399119
zv_equal 31001108
zv_equal0 23113198
zv_neg 51870
zv_neg_inplace 126
zv_prod 951118
zv_prod_Z 1974213
zv_sum 16513
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28609

Generated by: LCOV version 1.16