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 30861-40e9da58f9) Lines: 839 988 84.9 %
Date: 2026-05-04 09:27:01 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 29893883
QM_QC_mul 125460
QM_mul 559148
QM_sqr 700
RgM_check_ZM 598591
RgM_issquare 42
RgV_check_ZV 1502830
ZC_Q_mul 2801942
ZC_ZV_mul 0
ZC_Z_add 370270
ZC_Z_div 3676873
ZC_Z_divexact 5876007
ZC_Z_mul 36184000
ZC_Z_sub 0
ZC_add 27088593
ZC_add_i 37119965
ZC_copy 18812738
ZC_divexactu 2261
ZC_hnfdivrem 10696964
ZC_hnfdivrem_i 11402765
ZC_is_ei 174398
ZC_lincomb 34910856
ZC_lincomb1 16045730
ZC_lincomb1_inplace 65758522
ZC_lincomb1_inplace_i 76817964
ZC_lincomb_1 760163
ZC_modhnf 280
ZC_neg 6364040
ZC_reducemodlll 97985
ZC_reducemodmatrix 112295
ZC_reducemodmatrix_i 112295
ZC_sub 9159131
ZC_sub_i 9575578
ZC_z_mul 64369
ZMV_to_zmV 49
ZM_Q_mul 1163577
ZM_ZC_mul 25802588
ZM_ZC_mul_i 78990928
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530696
ZM_Z_mul 3383547
ZM_add 844619
ZM_copy 744440
ZM_det_triangular 4270699
ZM_diag_mul 593014
ZM_divexactu 441
ZM_equal 3503641
ZM_equal0 32306
ZM_hnfdivrem 529481
ZM_hnfdivrem_i 529497
ZM_isdiagonal 677172
ZM_ishnf 878307
ZM_isidentity 658204
ZM_isscalar 161859
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22788
ZM_max_lg_i 27924374
ZM_modhnf 14
ZM_mul 21120243
ZM_mul_classical 13886084
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21517270
ZM_mul_slice 1105
ZM_mul_sw 76372
ZM_mul_worker 1105
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1733917
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239850
ZM_reducemodmatrix_i 239850
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 181795
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17960660
ZM_zc_mul_i 20113176
ZM_zm_mul 1001761
ZMrow_ZC_mul 137965372
ZMrow_ZC_mul_i 604392473
ZMrow_equal0 16231
ZRED 1170547
ZV_ZM_mul 231351
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3255307
ZV_content 300503
ZV_dotproduct 16644185
ZV_dotproduct_i 19473775
ZV_dotsquare 6861816
ZV_equal 293372
ZV_equal0 15018686
ZV_equal_lg 6523800
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 114372926
ZV_neg_inplace 391290
ZV_prod 8856032
ZV_sum 77
ZV_to_nv 431567
ZV_togglesign 7280914
ZV_zc_mul 2229556
Z_ZC_sub 584366
ZincrementalGS 1279188
Zupdate_row 402275
_ZM_mul 280
_ZM_sqr 24143
_mulii 319251209
add_slices 610976
check_ZV 1939055
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534604
sw_bound 13962429
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 183874
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19544356
zv_dotproduct 196399119
zv_equal 67992663
zv_equal0 23113605
zv_neg 51869
zv_neg_inplace 126
zv_prod 951608
zv_prod_Z 1976177
zv_sum 16521
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28765

Generated by: LCOV version 1.16