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 30786-ffec283a2b) Lines: 1115 1153 96.7 %
Date: 2026-04-07 09:25:56 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 792
pari_kernel_init 794
sqrispec_fft 1704
incneg 50013
muliispec_fft 83862
muliifft_unspliti 85566
mulliifft_params 85566
resetloop 130656
diviuuexact 150129
muluui 166797
muliifft_spliti 169428
divis 245628
sqrtispec2_sh 271266
convi 319424
Zf_sqr 456960
convi_dac 738921
setloop 2248401
truncr 2544978
sqrtispec1_sh 2711751
sqrtremi 3769626
floorr 5201916
Zf_mul 15393408
muliifft_dis 15764802
remi2n 20286087
diviuexact 22392822
diviuexact_i 29659026
muliifft_dit 31074348
incpos 34964784
incloop 35267283
red_montgomery 36218184
mantissa2nr 49456956
divis_rem 65910108
sqrtr_abs 94741878
xmpn_zero 94741878
sqrtispec2 95527932
p_sqrtu2 95799198
p_sqrtu1 98510949
divri 114999012
divrr 136094145
Zf_add 188395200
Zf_mulsqrt2 188395200
Zf_sub 191832396
Zf_shift 207111684
equaliispec 227406552
absdiviu_rem 234810189
affir 324810849
sqrtispec 337793721
diviiexact 388119846
Zf_red_destroy 400920264
roundr_up_ip 449700046
catii 484531578
adduispec_offset 491639820
addshiftw 715337961
int_normalize 868113129
sqrispec_basecase 995415168
sqrispec 1005396471
xmpn_copy 1106248029
shiftispec 1290559701
umodiu 1430278080
subiuspec 1594800216
dvmdii 1688793942
adduispec 2393036112
subiispec 3405772056
cmpiispec 4127029965
addiispec 4591178292
muluispec 4838670366
muliispec_basecase 5152507692
muliispec 5380917636

Generated by: LCOV version 1.16