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: 2026-09-27 17:03:06 Functions: 96.4 % 56 54
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function hit count
GEN2mpz 117014292
absdiviu_rem 52882462
addiispec 3497631847
adduispec 2909497070
adduispec_offset 775280009
addumului 0
affir 422157858
cmpiispec 4255270896
convi 447820
diviiexact 561481580
divis 336637
divis_rem 94421233
diviuexact 34279537
diviuexact_i 441944934
diviuuexact 200898
divri 161201155
divri_with_gmp 35425583
divrr 151746961
divrr_with_gmp 78684391
dvmdii 2314111846
equaliispec 310392264
floorr 6429964
icopy_ef 42973822
incloop 64306090
incneg 66684
incpos 63902752
int_normalize 322934971
mantissa2nr 142730801
mpz2GEN 58507146
muliispec 6212994931
muliispec_mirror 86836573
muluispec 5943110951
muluui 223122
pari_gmp_free 1632821
pari_gmp_realloc 0
pari_kernel_close 1092
pari_kernel_init 1100
pari_kernel_version 4
red_montgomery 34723369
remi2n 38630787
resetloop 174380
roundr_up_ip 562367203
setloop 2999288
shiftispec 763754360
sqrispec 1082380684
sqrispec_mirror 42195509
sqrtr_abs 131569363
sqrtremi 5137711
subiispec 3276589795
subiuspec 1873961381
truncr 2530406
umodiu 1372905205
xmpn_copy 7066510
xmpn_mirror 609294549
xmpn_mirrorcopy 742265708
xmpn_zero 245679337

Generated by: LCOV version 2.0-1