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 30733-eb2d773d38) Lines: 839 988 84.9 %
Date: 2026-03-03 09:24:12 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 29896128
QM_QC_mul 125454
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598555
RgM_issquare 42
RgV_check_ZV 1501289
ZC_Q_mul 2756540
ZC_ZV_mul 0
ZC_Z_add 370256
ZC_Z_div 3676916
ZC_Z_divexact 5876388
ZC_Z_mul 36186090
ZC_Z_sub 0
ZC_add 27094752
ZC_add_i 37125032
ZC_copy 18804060
ZC_divexactu 2261
ZC_hnfdivrem 10697362
ZC_hnfdivrem_i 11403379
ZC_is_ei 174398
ZC_lincomb 34911406
ZC_lincomb1 16046474
ZC_lincomb1_inplace 65762800
ZC_lincomb1_inplace_i 76828542
ZC_lincomb_1 760136
ZC_modhnf 280
ZC_neg 6363703
ZC_reducemodlll 97981
ZC_reducemodmatrix 112295
ZC_reducemodmatrix_i 112295
ZC_sub 9156976
ZC_sub_i 9571665
ZC_z_mul 64370
ZMV_to_zmV 49
ZM_Q_mul 1140883
ZM_ZC_mul 25800820
ZM_ZC_mul_i 78988354
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530686
ZM_Z_mul 3382180
ZM_add 844720
ZM_copy 743227
ZM_det_triangular 4266863
ZM_diag_mul 592911
ZM_divexactu 441
ZM_equal 3500343
ZM_equal0 32306
ZM_hnfdivrem 529572
ZM_hnfdivrem_i 529587
ZM_isdiagonal 677196
ZM_ishnf 878318
ZM_isidentity 658169
ZM_isscalar 161746
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22662
ZM_max_lg_i 27920018
ZM_modhnf 14
ZM_mul 21114436
ZM_mul_classical 13883885
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21511464
ZM_mul_slice 1102
ZM_mul_sw 76372
ZM_mul_worker 1104
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1733860
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239853
ZM_reducemodmatrix_i 239854
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181280
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17958836
ZM_zc_mul_i 20109596
ZM_zm_mul 1001253
ZMrow_ZC_mul 137967529
ZMrow_ZC_mul_i 604417262
ZMrow_equal0 16231
ZRED 1170600
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3254375
ZV_content 300483
ZV_dotproduct 16644258
ZV_dotproduct_i 19473584
ZV_dotsquare 6861427
ZV_equal 293355
ZV_equal0 15012415
ZV_equal_lg 6519030
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114362914
ZV_neg_inplace 391039
ZV_prod 8856110
ZV_sum 77
ZV_to_nv 431559
ZV_togglesign 7272793
ZV_zc_mul 2229556
Z_ZC_sub 584374
ZincrementalGS 1279258
Zupdate_row 402279
_ZM_mul 280
_ZM_sqr 24143
_mulii 318938586
add_slices 610976
check_ZV 1938998
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534604
sw_bound 13960249
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 183002
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19544191
zv_dotproduct 196399119
zv_equal 30990767
zv_equal0 23113191
zv_neg 51879
zv_neg_inplace 126
zv_prod 951617
zv_prod_Z 1974424
zv_sum 16513
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28765

Generated by: LCOV version 1.16