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 30831-19b50a36d0) Lines: 839 988 84.9 %
Date: 2026-04-21 09:26:02 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 29896592
QM_QC_mul 125451
QM_mul 558938
QM_sqr 700
RgM_check_ZM 598556
RgM_issquare 42
RgV_check_ZV 1501279
ZC_Q_mul 2801520
ZC_ZV_mul 0
ZC_Z_add 370250
ZC_Z_div 3676874
ZC_Z_divexact 5876160
ZC_Z_mul 36172947
ZC_Z_sub 0
ZC_add 27083151
ZC_add_i 37114705
ZC_copy 18807345
ZC_divexactu 2261
ZC_hnfdivrem 10696953
ZC_hnfdivrem_i 11402826
ZC_is_ei 174398
ZC_lincomb 34911611
ZC_lincomb1 16045333
ZC_lincomb1_inplace 65748809
ZC_lincomb1_inplace_i 76806813
ZC_lincomb_1 760304
ZC_modhnf 280
ZC_neg 6363465
ZC_reducemodlll 97981
ZC_reducemodmatrix 112287
ZC_reducemodmatrix_i 112286
ZC_sub 9157235
ZC_sub_i 9572982
ZC_z_mul 64366
ZMV_to_zmV 49
ZM_Q_mul 1163383
ZM_ZC_mul 25800507
ZM_ZC_mul_i 78986265
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530670
ZM_Z_mul 3382011
ZM_add 844669
ZM_copy 743894
ZM_det_triangular 4267601
ZM_diag_mul 592976
ZM_divexactu 441
ZM_equal 3500210
ZM_equal0 32306
ZM_hnfdivrem 529509
ZM_hnfdivrem_i 529528
ZM_isdiagonal 677187
ZM_ishnf 878308
ZM_isidentity 658133
ZM_isscalar 161878
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22655
ZM_max_lg_i 27920377
ZM_modhnf 14
ZM_mul 21115580
ZM_mul_classical 13884048
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21512588
ZM_mul_slice 1104
ZM_mul_sw 76372
ZM_mul_worker 1104
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1733936
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23617
ZM_reducemodlll 0
ZM_reducemodmatrix 239848
ZM_reducemodmatrix_i 239849
ZM_sqr 25220
ZM_sqr_fast 0
ZM_sqr_i 25220
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181616
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17960198
ZM_zc_mul_i 20112027
ZM_zm_mul 1001590
ZMrow_ZC_mul 137966341
ZMrow_ZC_mul_i 604349713
ZMrow_equal0 16231
ZRED 1170501
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3254348
ZV_content 300480
ZV_dotproduct 16643402
ZV_dotproduct_i 19473203
ZV_dotsquare 6861514
ZV_equal 293362
ZV_equal0 15012396
ZV_equal_lg 6518837
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114363347
ZV_neg_inplace 391096
ZV_prod 8855978
ZV_sum 77
ZV_to_nv 431542
ZV_togglesign 7278964
ZV_zc_mul 2229556
Z_ZC_sub 584373
ZincrementalGS 1279166
Zupdate_row 402279
_ZM_mul 280
_ZM_sqr 24142
_mulii 319251395
add_slices 610976
check_ZV 1938990
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534604
sw_bound 13960424
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 183702
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19545980
zv_dotproduct 196399119
zv_equal 67992590
zv_equal0 23113609
zv_neg 51871
zv_neg_inplace 126
zv_prod 951616
zv_prod_Z 1974624
zv_sum 16508
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28765

Generated by: LCOV version 1.16