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 30744-52374ab6cf) Lines: 1115 1153 96.7 %
Date: 2026-03-17 09:26:37 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 319022
Zf_sqr 456960
convi_dac 738921
setloop 2248398
truncr 2544966
sqrtispec1_sh 2711751
sqrtremi 3769626
floorr 5201898
Zf_mul 15393408
muliifft_dis 15764802
remi2n 20286087
diviuexact 22392822
diviuexact_i 29659023
muliifft_dit 31074348
incpos 34964829
incloop 35267328
red_montgomery 36218184
mantissa2nr 49456953
divis_rem 65910093
sqrtr_abs 94718931
xmpn_zero 94718931
sqrtispec2 95504985
p_sqrtu2 95776251
p_sqrtu1 98488002
divri 114999159
divrr 136078497
Zf_add 188395200
Zf_mulsqrt2 188395200
Zf_sub 191832396
equaliispec 198383004
Zf_shift 207111684
absdiviu_rem 234809757
affir 324812223
sqrtispec 337736355
diviiexact 388118448
Zf_red_destroy 400920264
roundr_up_ip 449687350
catii 484462740
adduispec_offset 491263947
addshiftw 715205610
int_normalize 867646443
sqrispec_basecase 995752911
sqrispec 1005734214
xmpn_copy 1106075640
shiftispec 1290779325
umodiu 1429371294
subiuspec 1594431999
dvmdii 1686749322
adduispec 2391681504
subiispec 3404796453
cmpiispec 4125853380
addiispec 4589967684
muluispec 4839200946
muliispec_basecase 5151536298
muliispec 5379897276

Generated by: LCOV version 1.16