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 30851-7844d7b3a5) Lines: 839 988 84.9 %
Date: 2026-05-03 09:26:29 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 29891732
QM_QC_mul 125454
QM_mul 559148
QM_sqr 700
RgM_check_ZM 598582
RgM_issquare 42
RgV_check_ZV 1501286
ZC_Q_mul 2801948
ZC_ZV_mul 0
ZC_Z_add 370254
ZC_Z_div 3676880
ZC_Z_divexact 5876082
ZC_Z_mul 36177221
ZC_Z_sub 0
ZC_add 27084998
ZC_add_i 37116314
ZC_copy 18809300
ZC_divexactu 2261
ZC_hnfdivrem 10697008
ZC_hnfdivrem_i 11402860
ZC_is_ei 174398
ZC_lincomb 34911329
ZC_lincomb1 16044833
ZC_lincomb1_inplace 65770982
ZC_lincomb1_inplace_i 76831094
ZC_lincomb_1 760181
ZC_modhnf 280
ZC_neg 6364221
ZC_reducemodlll 97983
ZC_reducemodmatrix 112294
ZC_reducemodmatrix_i 112294
ZC_sub 9157528
ZC_sub_i 9573869
ZC_z_mul 64369
ZMV_to_zmV 49
ZM_Q_mul 1163603
ZM_ZC_mul 25801253
ZM_ZC_mul_i 78994187
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530692
ZM_Z_mul 3382034
ZM_add 844623
ZM_copy 744404
ZM_det_triangular 4267688
ZM_diag_mul 593000
ZM_divexactu 441
ZM_equal 3500570
ZM_equal0 32306
ZM_hnfdivrem 529466
ZM_hnfdivrem_i 529483
ZM_isdiagonal 677170
ZM_ishnf 878305
ZM_isidentity 658234
ZM_isscalar 161886
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22788
ZM_max_lg_i 27922142
ZM_modhnf 14
ZM_mul 21117001
ZM_mul_classical 13885027
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21514080
ZM_mul_slice 1104
ZM_mul_sw 76372
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1733998
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239863
ZM_reducemodmatrix_i 239864
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181742
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959417
ZM_zc_mul_i 20111837
ZM_zm_mul 1001716
ZMrow_ZC_mul 137968059
ZMrow_ZC_mul_i 604429279
ZMrow_equal0 16231
ZRED 1170547
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3254341
ZV_content 300483
ZV_dotproduct 16644954
ZV_dotproduct_i 19474275
ZV_dotsquare 6861975
ZV_equal 293353
ZV_equal0 15015774
ZV_equal_lg 6519158
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114377696
ZV_neg_inplace 391381
ZV_prod 8855972
ZV_sum 77
ZV_to_nv 431563
ZV_togglesign 7281952
ZV_zc_mul 2229556
Z_ZC_sub 584359
ZincrementalGS 1279205
Zupdate_row 402263
_ZM_mul 280
_ZM_sqr 24143
_mulii 319251098
add_slices 610976
check_ZV 1939048
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534604
sw_bound 13961387
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 183827
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19545946
zv_dotproduct 196399119
zv_equal 67992725
zv_equal0 23113593
zv_neg 51873
zv_neg_inplace 126
zv_prod 951618
zv_prod_Z 1974623
zv_sum 16519
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28774

Generated by: LCOV version 1.16