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 30824-18397de1d0) Lines: 839 988 84.9 %
Date: 2026-04-19 09:25:48 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 29892840
QM_QC_mul 125454
QM_mul 558938
QM_sqr 700
RgM_check_ZM 598557
RgM_issquare 42
RgV_check_ZV 1501279
ZC_Q_mul 2801517
ZC_ZV_mul 0
ZC_Z_add 370255
ZC_Z_div 3676879
ZC_Z_divexact 5876146
ZC_Z_mul 36171721
ZC_Z_sub 0
ZC_add 27082135
ZC_add_i 37113440
ZC_copy 18807513
ZC_divexactu 2261
ZC_hnfdivrem 10696962
ZC_hnfdivrem_i 11402873
ZC_is_ei 174398
ZC_lincomb 34910936
ZC_lincomb1 16045375
ZC_lincomb1_inplace 65756119
ZC_lincomb1_inplace_i 76816550
ZC_lincomb_1 760118
ZC_modhnf 280
ZC_neg 6363962
ZC_reducemodlll 97975
ZC_reducemodmatrix 112290
ZC_reducemodmatrix_i 112290
ZC_sub 9157294
ZC_sub_i 9573226
ZC_z_mul 64368
ZMV_to_zmV 49
ZM_Q_mul 1163368
ZM_ZC_mul 25800306
ZM_ZC_mul_i 78990824
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530682
ZM_Z_mul 3381868
ZM_add 844619
ZM_copy 743874
ZM_det_triangular 4267404
ZM_diag_mul 592956
ZM_divexactu 441
ZM_equal 3500154
ZM_equal0 32306
ZM_hnfdivrem 529517
ZM_hnfdivrem_i 529531
ZM_isdiagonal 677171
ZM_ishnf 878328
ZM_isidentity 658215
ZM_isscalar 161779
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22655
ZM_max_lg_i 27920897
ZM_modhnf 14
ZM_mul 21115583
ZM_mul_classical 13884297
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21512631
ZM_mul_slice 1100
ZM_mul_sw 76372
ZM_mul_worker 1099
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1733947
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23617
ZM_reducemodlll 0
ZM_reducemodmatrix 239849
ZM_reducemodmatrix_i 239850
ZM_sqr 25220
ZM_sqr_fast 0
ZM_sqr_i 25220
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181578
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959549
ZM_zc_mul_i 20111546
ZM_zm_mul 1001553
ZMrow_ZC_mul 137964666
ZMrow_ZC_mul_i 604413986
ZMrow_equal0 16231
ZRED 1170508
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3254356
ZV_content 300483
ZV_dotproduct 16644153
ZV_dotproduct_i 19473827
ZV_dotsquare 6861413
ZV_equal 293371
ZV_equal0 15014088
ZV_equal_lg 6518799
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114373143
ZV_neg_inplace 391125
ZV_prod 8855990
ZV_sum 77
ZV_to_nv 431548
ZV_togglesign 7279471
ZV_zc_mul 2229556
Z_ZC_sub 584348
ZincrementalGS 1279152
Zupdate_row 402304
_ZM_mul 280
_ZM_sqr 24142
_mulii 319251040
add_slices 610976
check_ZV 1938999
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534604
sw_bound 13960664
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 183665
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19545690
zv_dotproduct 196399119
zv_equal 67992657
zv_equal0 23113595
zv_neg 51885
zv_neg_inplace 126
zv_prod 951614
zv_prod_Z 1974626
zv_sum 16516
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28779

Generated by: LCOV version 1.16