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 30657-d14c2a9e4e) Lines: 839 988 84.9 %
Date: 2026-01-29 09:23:20 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 29897966
QM_QC_mul 126986
QM_mul 558714
QM_sqr 700
RgM_check_ZM 598174
RgM_issquare 42
RgV_check_ZV 1501242
ZC_Q_mul 2758078
ZC_ZV_mul 0
ZC_Z_add 366796
ZC_Z_div 3676971
ZC_Z_divexact 5779645
ZC_Z_mul 36152162
ZC_Z_sub 0
ZC_add 27070839
ZC_add_i 37101799
ZC_copy 18146562
ZC_divexactu 2261
ZC_hnfdivrem 10697049
ZC_hnfdivrem_i 11323873
ZC_is_ei 174398
ZC_lincomb 34824347
ZC_lincomb1 16036852
ZC_lincomb1_inplace 64136128
ZC_lincomb1_inplace_i 75193948
ZC_lincomb_1 757652
ZC_modhnf 280
ZC_neg 6357541
ZC_reducemodlll 97980
ZC_reducemodmatrix 112291
ZC_reducemodmatrix_i 112291
ZC_sub 9094328
ZC_sub_i 9427216
ZC_z_mul 64349
ZMV_to_zmV 49
ZM_Q_mul 1140899
ZM_ZC_mul 25801001
ZM_ZC_mul_i 77640625
ZM_ZV_divrem 0
ZM_Z_div 19308
ZM_Z_divexact 530271
ZM_Z_mul 3381293
ZM_add 844520
ZM_copy 667127
ZM_det_triangular 4147689
ZM_diag_mul 578797
ZM_divexactu 441
ZM_equal 3499383
ZM_equal0 32292
ZM_hnfdivrem 491776
ZM_hnfdivrem_i 491792
ZM_isdiagonal 625473
ZM_ishnf 826613
ZM_isidentity 658046
ZM_isscalar 161832
ZM_max_expi 0
ZM_max_expi_i 0
ZM_max_lg 22662
ZM_max_lg_i 27714946
ZM_modhnf 14
ZM_mul 20964229
ZM_mul_classical 13781322
ZM_mul_diag 21
ZM_mul_fast 839
ZM_mul_i 21361457
ZM_mul_slice 1104
ZM_mul_sw 76375
ZM_mul_worker 1104
ZM_multosym 0
ZM_nc_mul_i 0
ZM_neg 1734027
ZM_nm_mul 0
ZM_pow 0
ZM_powu 23618
ZM_reducemodlll 0
ZM_reducemodmatrix 239862
ZM_reducemodmatrix_i 239861
ZM_sqr 25221
ZM_sqr_fast 0
ZM_sqr_i 25221
ZM_sqr_slice 0
ZM_sqr_worker 0
ZM_sub 156931
ZM_supnorm 4260
ZM_to_zm 1022
ZM_togglesign 0
ZM_transmul 2289
ZM_transmultosym 532221
ZM_zc_mul 17959154
ZM_zc_mul_i 20028113
ZM_zm_mul 976953
ZMrow_ZC_mul 137950797
ZMrow_ZC_mul_i 599837071
ZMrow_equal0 16231
ZRED 1170568
ZV_ZM_mul 231238
ZV_ZV_divrem 7
ZV_abscmp 19747
ZV_cmp 3253708
ZV_content 300474
ZV_dotproduct 16640745
ZV_dotproduct_i 19471336
ZV_dotsquare 6859532
ZV_equal 293362
ZV_equal0 14714219
ZV_equal_lg 6517825
ZV_max_expi 0
ZV_max_expi_i 0
ZV_max_lg 10640
ZV_max_lg_i 111646215
ZV_neg_inplace 391092
ZV_prod 8855781
ZV_sum 77
ZV_to_nv 496498
ZV_togglesign 5125316
ZV_zc_mul 2229556
Z_ZC_sub 584378
ZincrementalGS 1279210
Zupdate_row 402341
_ZM_mul 280
_ZM_sqr 24143
_mulii 319219025
add_slices 611000
check_ZV 1937498
matmodhnf 49
matmodhnf_check 98
nm_Z_mul 0
subtract_slices 534625
sw_bound 13857673
vecsmall_prod 14694393
zmV_to_ZMV 126
zm_to_Flm 22694
zm_to_ZM 158057
zvV_equal 1638
zv_ZM_mul 2408
zv_abs 77
zv_canon_inplace 22921521
zv_content 19537486
zv_dotproduct 196399119
zv_equal 31000833
zv_equal0 23113167
zv_neg 51861
zv_neg_inplace 126
zv_prod 950951
zv_prod_Z 1922690
zv_sum 16511
zv_sumpart 0
zv_to_Flv 366646
zv_z_mul 28659

Generated by: LCOV version 1.16