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/none - mp.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30391-f41a6adeb0) Lines: 1115 1153 96.7 %
Date: 2025-07-14 09:22:41 Functions: 69 70 98.6 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Zf_add 187743168
Zf_mul 15346560
Zf_mulsqrt2 187743168
Zf_red_destroy 399451479
Zf_shift 206356761
Zf_sqr 448896
Zf_sub 191155632
absdiviu_rem 280532724
addiispec 4587905403
addshiftw 707471754
adduispec 2395861296
adduispec_offset 491214021
addumului 0
affir 322951134
catii 473843970
cmpiispec 4127100948
convi 317435
convi_dac 736542
diviiexact 394993254
divis 751356
divis_rem 65790498
diviuexact 28739553
diviuexact_i 29566812
diviuuexact 149898
divri 114207165
divrr 130299924
dvmdii 1685242404
equaliispec 200363064
floorr 5347842
incloop 35265825
incneg 50013
incpos 34963326
int_normalize 856561041
mantissa2nr 49099899
muliifft_dis 15710103
muliifft_dit 30972969
muliifft_spliti 169047
muliifft_unspliti 85353
muliispec 5468806920
muliispec_basecase 5241635400
muliispec_fft 83694
mulliifft_params 85353
muluispec 4853114415
muluui 166566
p_sqrtu1 95610048
p_sqrtu2 92858775
pari_kernel_close 786
pari_kernel_init 788
pari_kernel_version 2
red_montgomery 40617075
remi2n 19992306
resetloop 130656
roundr_up_ip 448884007
setloop 2248386
shiftispec 1284903684
sqrispec 949050417
sqrispec_basecase 939111324
sqrispec_fft 1659
sqrtispec 329505852
sqrtispec1_sh 2751273
sqrtispec2 92583867
sqrtispec2_sh 274908
sqrtr_abs 91796427
sqrtremi 3814176
subiispec 3396902391
subiuspec 1593556134
truncr 2698422
umodiu 1428634131
xmpn_copy 1080640743
xmpn_zero 91796427

Generated by: LCOV version 1.16