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 30759-17b423fb9b) Lines: 839 988 84.9 %
Date: 2026-03-21 09:26:11 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 29896819
QM_QC_mul 125457
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598563
RgM_issquare 42
RgV_check_ZV 1501288
ZC_Q_mul 2756537
ZC_ZV_mul 0
ZC_Z_add 370252
ZC_Z_div 3676876
ZC_Z_divexact 5876384
ZC_Z_mul 36185026
ZC_Z_sub 0
ZC_add 27093642
ZC_add_i 37124064
ZC_copy 18809652
ZC_divexactu 2261
ZC_hnfdivrem 10697091
ZC_hnfdivrem_i 11402932
ZC_is_ei 174398
ZC_lincomb 34910875
ZC_lincomb1 16045382
ZC_lincomb1_inplace 65757608
ZC_lincomb1_inplace_i 76819340
ZC_lincomb_1 760131
ZC_modhnf 280
ZC_neg 6363788
ZC_reducemodlll 97987
ZC_reducemodmatrix 112297
ZC_reducemodmatrix_i 112297
ZC_sub 9157120
ZC_sub_i 9573842
ZC_z_mul 64368
ZMV_to_zmV 49
ZM_Q_mul 1140881
ZM_ZC_mul 25799879
ZM_ZC_mul_i 78991638
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530685
ZM_Z_mul 3381927
ZM_add 844624
ZM_copy 744130
ZM_det_triangular 4267777
ZM_diag_mul 592994
ZM_divexactu 441
ZM_equal 3500216
ZM_equal0 32306
ZM_hnfdivrem 529493
ZM_hnfdivrem_i 529511
ZM_isdiagonal 677184
ZM_ishnf 878320
ZM_isidentity 658179
ZM_isscalar 161896
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22655
ZM_max_lg_i 27920572
ZM_modhnf 14
ZM_mul 21115337
ZM_mul_classical 13884200
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21512247
ZM_mul_slice 1103
ZM_mul_sw 76372
ZM_mul_worker 1104
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1733904
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239856
ZM_reducemodmatrix_i 239856
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181861
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959215
ZM_zc_mul_i 20111995
ZM_zm_mul 1001831
ZMrow_ZC_mul 137972970
ZMrow_ZC_mul_i 604435778
ZMrow_equal0 16231
ZRED 1170574
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3254387
ZV_content 300486
ZV_dotproduct 16644199
ZV_dotproduct_i 19473802
ZV_dotsquare 6861584
ZV_equal 293357
ZV_equal0 15014345
ZV_equal_lg 6518760
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114369202
ZV_neg_inplace 391147
ZV_prod 8856060
ZV_sum 77
ZV_to_nv 431562
ZV_togglesign 7281562
ZV_zc_mul 2229556
Z_ZC_sub 584372
ZincrementalGS 1279217
Zupdate_row 402197
_ZM_mul 280
_ZM_sqr 24143
_mulii 319095120
add_slices 610976
check_ZV 1939010
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534604
sw_bound 13960570
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 183932
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19545268
zv_dotproduct 196399119
zv_equal 30999420
zv_equal0 23113587
zv_neg 51857
zv_neg_inplace 126
zv_prod 951570
zv_prod_Z 1974528
zv_sum 16516
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28749

Generated by: LCOV version 1.16