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 30622-caa25a75db) Lines: 839 988 84.9 %
Date: 2026-01-22 09:18:00 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 28323808
QM_QC_mul 126600
QM_mul 558714
QM_sqr 700
RgM_check_ZM 577217
RgM_issquare 42
RgV_check_ZV 1484133
ZC_Q_mul 2711299
ZC_ZV_mul 0
ZC_Z_add 349209
ZC_Z_div 3672193
ZC_Z_divexact 5518180
ZC_Z_mul 34908393
ZC_Z_sub 0
ZC_add 26313106
ZC_add_i 36335667
ZC_copy 17541587
ZC_divexactu 2261
ZC_hnfdivrem 10325847
ZC_hnfdivrem_i 10905323
ZC_is_ei 174398
ZC_lincomb 33745113
ZC_lincomb1 15621730
ZC_lincomb1_inplace 61833346
ZC_lincomb1_inplace_i 72519010
ZC_lincomb_1 719901
ZC_modhnf 280
ZC_neg 6201064
ZC_reducemodlll 85796
ZC_reducemodmatrix 100106
ZC_reducemodmatrix_i 100106
ZC_sub 8850508
ZC_sub_i 9171205
ZC_z_mul 61955
ZMV_to_zmV 49
ZM_Q_mul 1096687
ZM_ZC_mul 25139185
ZM_ZC_mul_i 75813213
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 495502
ZM_Z_mul 3324122
ZM_add 837082
ZM_copy 647984
ZM_det_triangular 4027519
ZM_diag_mul 530865
ZM_divexactu 441
ZM_equal 3411299
ZM_equal0 32289
ZM_hnfdivrem 449169
ZM_hnfdivrem_i 449183
ZM_isdiagonal 571244
ZM_ishnf 759206
ZM_isidentity 647310
ZM_isscalar 150903
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 21302
ZM_max_lg_i 27013249
ZM_modhnf 14
ZM_mul 20479307
ZM_mul_classical 13429693
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 20889681
ZM_mul_slice 1102
ZM_mul_sw 76348
ZM_mul_worker 1103
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1711251
ZM_nm_mul 0
ZM_pow 0
ZM_powu 20970
ZM_reducemodlll 0
ZM_reducemodmatrix 214497
ZM_reducemodmatrix_i 214497
ZM_sqr 22569
ZM_sqr_fast 0
ZM_sqr_i 22569
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 146916
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17693285
ZM_zc_mul_i 19751683
ZM_zm_mul 972719
ZMrow_ZC_mul 134167221
ZMrow_ZC_mul_i 588030112
ZMrow_equal0 16107
ZRED 1056562
ZV_ZM_mul 231214
ZV_ZV_divrem 7
ZV_abscmp 17190
ZV_cmp 3127151
ZV_content 300118
ZV_dotproduct 15940680
ZV_dotproduct_i 19022858
ZV_dotsquare 6508193
ZV_equal 291582
ZV_equal0 14211507
ZV_equal_lg 6347411
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 109125899
ZV_neg_inplace 366087
ZV_prod 8701935
ZV_sum 77
ZV_to_nv 465879
ZV_togglesign 5013430
ZV_zc_mul 2229556
Z_ZC_sub 543392
ZincrementalGS 1147649
Zupdate_row 363686
_ZM_mul 280
_ZM_sqr 21491
_mulii 319217405
add_slices 610784
check_ZV 1901173
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534436
sw_bound 13506039
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 153343
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19175750
zv_dotproduct 196399119
zv_equal 30961096
zv_equal0 23101811
zv_neg 51610
zv_neg_inplace 126
zv_prod 902283
zv_prod_Z 1903605
zv_sum 16113
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28195

Generated by: LCOV version 1.16