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
Zf_add 188395200
Zf_mul 15393408
Zf_mulsqrt2 188395200
Zf_red_destroy 400920264
Zf_shift 207111684
Zf_sqr 456960
Zf_sub 191832396
absdiviu_rem 234809757
addiispec 4589967684
addshiftw 715205610
adduispec 2391681504
adduispec_offset 491263947
addumului 0
affir 324812223
catii 484462740
cmpiispec 4125853380
convi 319022
convi_dac 738921
diviiexact 388118448
divis 245628
divis_rem 65910093
diviuexact 22392822
diviuexact_i 29659023
diviuuexact 150129
divri 114999159
divrr 136078497
dvmdii 1686749322
equaliispec 198383004
floorr 5201898
incloop 35267328
incneg 50013
incpos 34964829
int_normalize 867646443
mantissa2nr 49456953
muliifft_dis 15764802
muliifft_dit 31074348
muliifft_spliti 169428
muliifft_unspliti 85566
muliispec 5379897276
muliispec_basecase 5151536298
muliispec_fft 83862
mulliifft_params 85566
muluispec 4839200946
muluui 166797
p_sqrtu1 98488002
p_sqrtu2 95776251
pari_kernel_close 792
pari_kernel_init 794
pari_kernel_version 2
red_montgomery 36218184
remi2n 20286087
resetloop 130656
roundr_up_ip 449687350
setloop 2248398
shiftispec 1290779325
sqrispec 1005734214
sqrispec_basecase 995752911
sqrispec_fft 1704
sqrtispec 337736355
sqrtispec1_sh 2711751
sqrtispec2 95504985
sqrtispec2_sh 271266
sqrtr_abs 94718931
sqrtremi 3769626
subiispec 3404796453
subiuspec 1594431999
truncr 2544966
umodiu 1429371294
xmpn_copy 1106075640
xmpn_zero 94718931

Generated by: LCOV version 1.16