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 30674-be81ecfdd4) Lines: 839 988 84.9 %
Date: 2026-02-11 09:23:10 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 29896660
QM_QC_mul 127091
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598158
RgM_issquare 42
RgV_check_ZV 1501245
ZC_Q_mul 2758179
ZC_ZV_mul 0
ZC_Z_add 366788
ZC_Z_div 3676983
ZC_Z_divexact 5780552
ZC_Z_mul 36158575
ZC_Z_sub 0
ZC_add 27074448
ZC_add_i 37104744
ZC_copy 18147817
ZC_divexactu 2261
ZC_hnfdivrem 10697175
ZC_hnfdivrem_i 11323983
ZC_is_ei 174398
ZC_lincomb 34825615
ZC_lincomb1 16036986
ZC_lincomb1_inplace 64144436
ZC_lincomb1_inplace_i 75207719
ZC_lincomb_1 757681
ZC_modhnf 280
ZC_neg 6357693
ZC_reducemodlll 97981
ZC_reducemodmatrix 112290
ZC_reducemodmatrix_i 112290
ZC_sub 9094272
ZC_sub_i 9427274
ZC_z_mul 64346
ZMV_to_zmV 49
ZM_Q_mul 1140916
ZM_ZC_mul 25802386
ZM_ZC_mul_i 77643989
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530282
ZM_Z_mul 3381222
ZM_add 844464
ZM_copy 667094
ZM_det_triangular 4147673
ZM_diag_mul 578916
ZM_divexactu 441
ZM_equal 3499371
ZM_equal0 32306
ZM_hnfdivrem 491804
ZM_hnfdivrem_i 491820
ZM_isdiagonal 625532
ZM_ishnf 826649
ZM_isidentity 658104
ZM_isscalar 161826
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22662
ZM_max_lg_i 27715151
ZM_modhnf 14
ZM_mul 20964137
ZM_mul_classical 13781440
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21361526
ZM_mul_slice 1105
ZM_mul_sw 76376
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734003
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239862
ZM_reducemodmatrix_i 239862
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 156914
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959039
ZM_zc_mul_i 20028109
ZM_zm_mul 976941
ZMrow_ZC_mul 137955238
ZMrow_ZC_mul_i 599921868
ZMrow_equal0 16231
ZRED 1170620
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253653
ZV_content 300478
ZV_dotproduct 16641115
ZV_dotproduct_i 19471568
ZV_dotsquare 6859491
ZV_equal 293357
ZV_equal0 14716444
ZV_equal_lg 6517776
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 111650284
ZV_neg_inplace 391135
ZV_prod 8855937
ZV_sum 77
ZV_to_nv 496639
ZV_togglesign 5124763
ZV_zc_mul 2229556
Z_ZC_sub 584382
ZincrementalGS 1279225
Zupdate_row 402266
_ZM_mul 280
_ZM_sqr 24143
_mulii 319218296
add_slices 611008
check_ZV 1937477
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534632
sw_bound 13857813
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 158045
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19538492
zv_dotproduct 196399119
zv_equal 31000801
zv_equal0 23113180
zv_neg 51869
zv_neg_inplace 126
zv_prod 951174
zv_prod_Z 1922693
zv_sum 16517
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28667

Generated by: LCOV version 1.16