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: 2026-04-20 09:27:00 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 29893271
QM_QC_mul 125454
QM_mul 558938
QM_sqr 700
RgM_check_ZM 598557
RgM_issquare 42
RgV_check_ZV 1501274
ZC_Q_mul 2801519
ZC_ZV_mul 0
ZC_Z_add 370247
ZC_Z_div 3676911
ZC_Z_divexact 5876031
ZC_Z_mul 36173569
ZC_Z_sub 0
ZC_add 27083998
ZC_add_i 37115107
ZC_copy 18807790
ZC_divexactu 2261
ZC_hnfdivrem 10696880
ZC_hnfdivrem_i 11402809
ZC_is_ei 174398
ZC_lincomb 34911012
ZC_lincomb1 16046016
ZC_lincomb1_inplace 65754665
ZC_lincomb1_inplace_i 76815151
ZC_lincomb_1 760218
ZC_modhnf 280
ZC_neg 6363698
ZC_reducemodlll 97981
ZC_reducemodmatrix 112290
ZC_reducemodmatrix_i 112289
ZC_sub 9157173
ZC_sub_i 9573229
ZC_z_mul 64368
ZMV_to_zmV 49
ZM_Q_mul 1163369
ZM_ZC_mul 25800493
ZM_ZC_mul_i 78989155
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530691
ZM_Z_mul 3381776
ZM_add 844549
ZM_copy 743950
ZM_det_triangular 4267541
ZM_diag_mul 592890
ZM_divexactu 441
ZM_equal 3500163
ZM_equal0 32306
ZM_hnfdivrem 529544
ZM_hnfdivrem_i 529558
ZM_isdiagonal 677175
ZM_ishnf 878306
ZM_isidentity 658202
ZM_isscalar 161839
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22655
ZM_max_lg_i 27920273
ZM_modhnf 14
ZM_mul 21115416
ZM_mul_classical 13884049
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21512467
ZM_mul_slice 1105
ZM_mul_sw 76372
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1733902
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239845
ZM_reducemodmatrix_i 239843
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181662
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959296
ZM_zc_mul_i 20111423
ZM_zm_mul 1001635
ZMrow_ZC_mul 137963314
ZMrow_ZC_mul_i 604399447
ZMrow_equal0 16231
ZRED 1170503
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3254293
ZV_content 300483
ZV_dotproduct 16644204
ZV_dotproduct_i 19473850
ZV_dotsquare 6861388
ZV_equal 293361
ZV_equal0 15013880
ZV_equal_lg 6518618
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114368630
ZV_neg_inplace 391125
ZV_prod 8855938
ZV_sum 77
ZV_to_nv 431550
ZV_togglesign 7279128
ZV_zc_mul 2229556
Z_ZC_sub 584366
ZincrementalGS 1279154
Zupdate_row 402265
_ZM_mul 280
_ZM_sqr 24143
_mulii 319251091
add_slices 610976
check_ZV 1938996
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534604
sw_bound 13960414
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 183747
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19545485
zv_dotproduct 196399119
zv_equal 67992716
zv_equal0 23113597
zv_neg 51869
zv_neg_inplace 126
zv_prod 951615
zv_prod_Z 1974616
zv_sum 16516
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28761

Generated by: LCOV version 1.16