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 30660-09c6d0ed2e) Lines: 839 988 84.9 %
Date: 2026-02-02 09:23:03 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 29899721
QM_QC_mul 126986
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598167
RgM_issquare 42
RgV_check_ZV 1501245
ZC_Q_mul 2758075
ZC_ZV_mul 0
ZC_Z_add 366788
ZC_Z_div 3676958
ZC_Z_divexact 5779754
ZC_Z_mul 36154351
ZC_Z_sub 0
ZC_add 27073174
ZC_add_i 37103431
ZC_copy 18146903
ZC_divexactu 2261
ZC_hnfdivrem 10696982
ZC_hnfdivrem_i 11323845
ZC_is_ei 174398
ZC_lincomb 34823228
ZC_lincomb1 16036730
ZC_lincomb1_inplace 64135461
ZC_lincomb1_inplace_i 75195100
ZC_lincomb_1 757488
ZC_modhnf 280
ZC_neg 6357408
ZC_reducemodlll 97984
ZC_reducemodmatrix 112297
ZC_reducemodmatrix_i 112297
ZC_sub 9094336
ZC_sub_i 9427201
ZC_z_mul 64347
ZMV_to_zmV 49
ZM_Q_mul 1140905
ZM_ZC_mul 25800551
ZM_ZC_mul_i 77639634
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530267
ZM_Z_mul 3381149
ZM_add 844441
ZM_copy 667088
ZM_det_triangular 4147561
ZM_diag_mul 578737
ZM_divexactu 441
ZM_equal 3499309
ZM_equal0 32292
ZM_hnfdivrem 491836
ZM_hnfdivrem_i 491851
ZM_isdiagonal 625507
ZM_ishnf 826645
ZM_isidentity 658057
ZM_isscalar 161770
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22662
ZM_max_lg_i 27714046
ZM_modhnf 14
ZM_mul 20963769
ZM_mul_classical 13780821
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21361013
ZM_mul_slice 1105
ZM_mul_sw 76375
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1733928
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23617
ZM_reducemodlll 0
ZM_reducemodmatrix 239858
ZM_reducemodmatrix_i 239858
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 156893
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17958988
ZM_zc_mul_i 20027910
ZM_zm_mul 976914
ZMrow_ZC_mul 137955508
ZMrow_ZC_mul_i 599859214
ZMrow_equal0 16231
ZRED 1170619
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253676
ZV_content 300474
ZV_dotproduct 16640647
ZV_dotproduct_i 19471255
ZV_dotsquare 6859274
ZV_equal 293351
ZV_equal0 14714461
ZV_equal_lg 6517612
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 111644628
ZV_neg_inplace 391091
ZV_prod 8855836
ZV_sum 77
ZV_to_nv 496490
ZV_togglesign 5124894
ZV_zc_mul 2229556
Z_ZC_sub 584377
ZincrementalGS 1279220
Zupdate_row 402351
_ZM_mul 280
_ZM_sqr 24143
_mulii 319218367
add_slices 611000
check_ZV 1937488
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534625
sw_bound 13857331
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 158020
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19539123
zv_dotproduct 196399119
zv_equal 31000994
zv_equal0 23113192
zv_neg 51877
zv_neg_inplace 126
zv_prod 950950
zv_prod_Z 1922693
zv_sum 16518
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28672

Generated by: LCOV version 1.16