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 30724-b49b12e983) Lines: 839 988 84.9 %
Date: 2026-03-02 09:24:58 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 29899116
QM_QC_mul 125445
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598175
RgM_issquare 42
RgV_check_ZV 1501251
ZC_Q_mul 2756525
ZC_ZV_mul 0
ZC_Z_add 366787
ZC_Z_div 3676954
ZC_Z_divexact 5874805
ZC_Z_mul 36162055
ZC_Z_sub 0
ZC_add 27078028
ZC_add_i 37108330
ZC_copy 18798447
ZC_divexactu 2261
ZC_hnfdivrem 10697083
ZC_hnfdivrem_i 11403017
ZC_is_ei 174398
ZC_lincomb 34906617
ZC_lincomb1 16043374
ZC_lincomb1_inplace 65757546
ZC_lincomb1_inplace_i 76813828
ZC_lincomb_1 759799
ZC_modhnf 280
ZC_neg 6357453
ZC_reducemodlll 97980
ZC_reducemodmatrix 112294
ZC_reducemodmatrix_i 112294
ZC_sub 9156760
ZC_sub_i 9571404
ZC_z_mul 64351
ZMV_to_zmV 49
ZM_Q_mul 1140919
ZM_ZC_mul 25796913
ZM_ZC_mul_i 78978705
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530283
ZM_Z_mul 3381315
ZM_add 844467
ZM_copy 743204
ZM_det_triangular 4266912
ZM_diag_mul 593019
ZM_divexactu 441
ZM_equal 3499511
ZM_equal0 32306
ZM_hnfdivrem 529397
ZM_hnfdivrem_i 529411
ZM_isdiagonal 677199
ZM_ishnf 878322
ZM_isidentity 658041
ZM_isscalar 161774
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22662
ZM_max_lg_i 27917389
ZM_modhnf 14
ZM_mul 21113322
ZM_mul_classical 13882491
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21510581
ZM_mul_slice 1105
ZM_mul_sw 76376
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1733952
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23617
ZM_reducemodlll 0
ZM_reducemodmatrix 239851
ZM_reducemodmatrix_i 239850
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181288
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959044
ZM_zc_mul_i 20109764
ZM_zm_mul 1001311
ZMrow_ZC_mul 137955661
ZMrow_ZC_mul_i 604356194
ZMrow_equal0 16231
ZRED 1170544
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253733
ZV_content 300474
ZV_dotproduct 16640439
ZV_dotproduct_i 19471148
ZV_dotsquare 6859240
ZV_equal 293351
ZV_equal0 15006796
ZV_equal_lg 6517899
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114351696
ZV_neg_inplace 391096
ZV_prod 8856037
ZV_sum 77
ZV_to_nv 431550
ZV_togglesign 7272908
ZV_zc_mul 2229556
Z_ZC_sub 584381
ZincrementalGS 1279212
Zupdate_row 402283
_ZM_mul 280
_ZM_sqr 24142
_mulii 318937724
add_slices 611008
check_ZV 1937504
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534632
sw_bound 13958893
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 182414
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19539336
zv_dotproduct 196399119
zv_equal 30989925
zv_equal0 23113189
zv_neg 51875
zv_neg_inplace 126
zv_prod 951114
zv_prod_Z 1974231
zv_sum 16511
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28614

Generated by: LCOV version 1.16