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 30734-f1f26dedcb) Lines: 839 988 84.9 %
Date: 2026-03-04 09:24:31 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 29892636
QM_QC_mul 125454
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598555
RgM_issquare 42
RgV_check_ZV 1501289
ZC_Q_mul 2756541
ZC_ZV_mul 0
ZC_Z_add 370262
ZC_Z_div 3676867
ZC_Z_divexact 5876436
ZC_Z_mul 36184155
ZC_Z_sub 0
ZC_add 27093900
ZC_add_i 37124627
ZC_copy 18804265
ZC_divexactu 2261
ZC_hnfdivrem 10697125
ZC_hnfdivrem_i 11403118
ZC_is_ei 174398
ZC_lincomb 34910294
ZC_lincomb1 16045769
ZC_lincomb1_inplace 65766433
ZC_lincomb1_inplace_i 76829486
ZC_lincomb_1 760195
ZC_modhnf 280
ZC_neg 6363988
ZC_reducemodlll 97983
ZC_reducemodmatrix 112290
ZC_reducemodmatrix_i 112290
ZC_sub 9156974
ZC_sub_i 9571614
ZC_z_mul 64374
ZMV_to_zmV 49
ZM_Q_mul 1140892
ZM_ZC_mul 25801231
ZM_ZC_mul_i 78992947
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530664
ZM_Z_mul 3381850
ZM_add 844573
ZM_copy 743240
ZM_det_triangular 4266982
ZM_diag_mul 592956
ZM_divexactu 441
ZM_equal 3500129
ZM_equal0 32306
ZM_hnfdivrem 529550
ZM_hnfdivrem_i 529565
ZM_isdiagonal 677199
ZM_ishnf 878341
ZM_isidentity 658165
ZM_isscalar 161813
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22655
ZM_max_lg_i 27921165
ZM_modhnf 14
ZM_mul 21115351
ZM_mul_classical 13884558
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21512377
ZM_mul_slice 1103
ZM_mul_sw 76372
ZM_mul_worker 1104
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734009
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239858
ZM_reducemodmatrix_i 239858
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181306
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17958622
ZM_zc_mul_i 20109429
ZM_zm_mul 1001279
ZMrow_ZC_mul 137974494
ZMrow_ZC_mul_i 604463775
ZMrow_equal0 16231
ZRED 1170589
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3254392
ZV_content 300483
ZV_dotproduct 16644592
ZV_dotproduct_i 19473880
ZV_dotsquare 6861632
ZV_equal 293369
ZV_equal0 15012489
ZV_equal_lg 6518683
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114370818
ZV_neg_inplace 391047
ZV_prod 8856095
ZV_sum 77
ZV_to_nv 431561
ZV_togglesign 7272224
ZV_zc_mul 2229556
Z_ZC_sub 584360
ZincrementalGS 1279214
Zupdate_row 402279
_ZM_mul 280
_ZM_sqr 24143
_mulii 318937392
add_slices 610976
check_ZV 1938988
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534604
sw_bound 13960895
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 183027
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19543230
zv_dotproduct 196399119
zv_equal 30990732
zv_equal0 23113201
zv_neg 51877
zv_neg_inplace 126
zv_prod 951597
zv_prod_Z 1974441
zv_sum 16509
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28774

Generated by: LCOV version 1.16