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 30813-28f64e5615) Lines: 1115 1153 96.7 %
Date: 2026-04-14 09:26:12 Functions: 69 70 98.6 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
addumului 0
pari_kernel_version 2
pari_kernel_close 795
pari_kernel_init 797
sqrispec_fft 1704
incneg 50013
muliispec_fft 83907
muliifft_unspliti 85611
mulliifft_params 85611
resetloop 130656
diviuuexact 150129
muluui 166797
muliifft_spliti 169518
divis 245628
sqrtispec2_sh 271362
convi 319423
Zf_sqr 456960
convi_dac 738921
setloop 2248404
truncr 2544978
sqrtispec1_sh 2711751
sqrtremi 3769731
floorr 5201916
Zf_mul 15405696
muliifft_dis 15777045
remi2n 20286069
diviuexact 22348263
diviuexact_i 29646501
muliifft_dit 31098834
incpos 34964892
incloop 35267391
red_montgomery 36218184
mantissa2nr 49456929
divis_rem 65910108
sqrtr_abs 94741878
xmpn_zero 94741878
sqrtispec2 95527941
p_sqrtu2 95799303
p_sqrtu1 98511054
divri 115003278
divrr 136092303
Zf_add 188551872
Zf_mulsqrt2 188551872
Zf_sub 191995812
Zf_shift 207293763
equaliispec 227977368
absdiviu_rem 234878070
affir 324807903
sqrtispec 337793739
diviiexact 389355546
Zf_red_destroy 401272128
roundr_up_ip 449700250
catii 484531596
adduispec_offset 492052761
addshiftw 715528347
int_normalize 868575318
sqrispec_basecase 995402349
sqrispec 1005383706
xmpn_copy 1106248065
shiftispec 1291177038
umodiu 1430402205
subiuspec 1595316678
dvmdii 1689042066
adduispec 2393388813
subiispec 3407324643
cmpiispec 4130171442
addiispec 4592291532
muluispec 4840503312
muliispec_basecase 5154735345
muliispec 5383240611

Generated by: LCOV version 1.16