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 - kernel/gmp - mp.c (source / functions) Coverage Total Hit
Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 95.0 % 718 682
Test Date: 2026-11-14 17:03:41 Functions: 96.4 % 56 54
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function hit count
GEN2mpz 117018256
absdiviu_rem 52878084
addiispec 3497743592
adduispec 2911004385
adduispec_offset 774952501
addumului 0
affir 422158697
cmpiispec 4254808868
convi 447825
diviiexact 561374408
divis 336631
divis_rem 94403600
diviuexact 34277376
diviuexact_i 441838905
diviuuexact 200898
divri 161199960
divri_with_gmp 35425249
divrr 151749824
divrr_with_gmp 78684154
dvmdii 2314574745
equaliispec 310392748
floorr 6429971
icopy_ef 42974000
incloop 62948149
incneg 66684
incpos 62544813
int_normalize 322760232
mantissa2nr 142729123
mpz2GEN 58509128
muliispec 6212813443
muliispec_mirror 86836601
muluispec 5942907942
muluui 223122
pari_gmp_free 1632825
pari_gmp_realloc 0
pari_kernel_close 1092
pari_kernel_init 1100
pari_kernel_version 4
red_montgomery 34723587
remi2n 38468836
resetloop 174380
roundr_up_ip 562369420
setloop 2999277
shiftispec 763758343
sqrispec 1082838985
sqrispec_mirror 42195893
sqrtr_abs 131567295
sqrtremi 5137721
subiispec 3277171167
subiuspec 1873752590
truncr 2530537
umodiu 1374540252
xmpn_copy 7066408
xmpn_mirror 609297810
xmpn_mirrorcopy 742261930
xmpn_zero 245676698

Generated by: LCOV version 2.0-1