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: 2026-09-14 17:02:03 Functions: 96.4 % 56 54
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function hit count
GEN2mpz 117010882
absdiviu_rem 52881444
addiispec 3497986881
adduispec 2909401162
adduispec_offset 775301552
addumului 0
affir 422125148
cmpiispec 4256880743
convi 447824
diviiexact 561412809
divis 336639
divis_rem 94396708
diviuexact 34278290
diviuexact_i 441876534
diviuuexact 200898
divri 161199224
divri_with_gmp 35425342
divrr 151746603
divrr_with_gmp 78684320
dvmdii 2315532890
equaliispec 310391644
floorr 6429914
icopy_ef 42966066
incloop 64242848
incneg 66684
incpos 63839512
int_normalize 322862922
mantissa2nr 142726262
mpz2GEN 58505441
muliispec 6212953013
muliispec_mirror 86836573
muluispec 5943001109
muluui 223122
pari_gmp_free 1632816
pari_gmp_realloc 0
pari_kernel_close 1092
pari_kernel_init 1100
pari_kernel_version 4
red_montgomery 34739066
remi2n 38639438
resetloop 174380
roundr_up_ip 562356868
setloop 2999288
shiftispec 763956238
sqrispec 1083123586
sqrispec_mirror 42195509
sqrtr_abs 131569726
sqrtremi 5137736
subiispec 3277713680
subiuspec 1873863338
truncr 2530474
umodiu 1372905427
xmpn_copy 7066551
xmpn_mirror 609272984
xmpn_mirrorcopy 742262527
xmpn_zero 245679388

Generated by: LCOV version 2.0-1