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 30712-26d8f09ef9) Lines: 839 988 84.9 %
Date: 2026-02-26 09:24:10 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 29899606
QM_QC_mul 127091
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598164
RgM_issquare 42
RgV_check_ZV 1501252
ZC_Q_mul 2758172
ZC_ZV_mul 0
ZC_Z_add 366785
ZC_Z_div 3676923
ZC_Z_divexact 5874968
ZC_Z_mul 36161833
ZC_Z_sub 0
ZC_add 27077020
ZC_add_i 37108124
ZC_copy 18801040
ZC_divexactu 2261
ZC_hnfdivrem 10697038
ZC_hnfdivrem_i 11402950
ZC_is_ei 174398
ZC_lincomb 34905484
ZC_lincomb1 16042706
ZC_lincomb1_inplace 65756662
ZC_lincomb1_inplace_i 76816383
ZC_lincomb_1 759772
ZC_modhnf 280
ZC_neg 6357579
ZC_reducemodlll 97983
ZC_reducemodmatrix 112297
ZC_reducemodmatrix_i 112298
ZC_sub 9156849
ZC_sub_i 9572771
ZC_z_mul 64349
ZMV_to_zmV 49
ZM_Q_mul 1140912
ZM_ZC_mul 25802187
ZM_ZC_mul_i 78987362
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530278
ZM_Z_mul 3381492
ZM_add 844587
ZM_copy 743529
ZM_det_triangular 4267333
ZM_diag_mul 593000
ZM_divexactu 441
ZM_equal 3499522
ZM_equal0 32306
ZM_hnfdivrem 529406
ZM_hnfdivrem_i 529419
ZM_isdiagonal 677203
ZM_ishnf 878322
ZM_isidentity 658085
ZM_isscalar 161858
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22661
ZM_max_lg_i 27917669
ZM_modhnf 14
ZM_mul 21114071
ZM_mul_classical 13882876
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21511237
ZM_mul_slice 1105
ZM_mul_sw 76376
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734025
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23617
ZM_reducemodlll 0
ZM_reducemodmatrix 239860
ZM_reducemodmatrix_i 239861
ZM_sqr 25220
ZM_sqr_fast 0
ZM_sqr_i 25220
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181613
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959455
ZM_zc_mul_i 20111455
ZM_zm_mul 1001633
ZMrow_ZC_mul 137953435
ZMrow_ZC_mul_i 604368303
ZMrow_equal0 16231
ZRED 1170512
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253683
ZV_content 300474
ZV_dotproduct 16640791
ZV_dotproduct_i 19471401
ZV_dotsquare 6859411
ZV_equal 293358
ZV_equal0 15008544
ZV_equal_lg 6517979
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114356561
ZV_neg_inplace 391089
ZV_prod 8855995
ZV_sum 77
ZV_to_nv 431536
ZV_togglesign 7277327
ZV_zc_mul 2229556
Z_ZC_sub 584392
ZincrementalGS 1279215
Zupdate_row 402399
_ZM_mul 280
_ZM_sqr 24142
_mulii 318938204
add_slices 611008
check_ZV 1937483
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534632
sw_bound 13959185
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 182738
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19539612
zv_dotproduct 196399119
zv_equal 31001077
zv_equal0 23113205
zv_neg 51865
zv_neg_inplace 126
zv_prod 951174
zv_prod_Z 1974233
zv_sum 16514
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28657

Generated by: LCOV version 1.16