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 30584-b9873745ba) Lines: 1115 1153 96.7 %
Date: 2025-12-21 09:21:02 Functions: 69 70 98.6 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Zf_add 187658496
Zf_mul 15338496
Zf_mulsqrt2 187658496
Zf_red_destroy 399271821
Zf_shift 206264025
Zf_sqr 448896
Zf_sub 191070960
absdiviu_rem 234664644
addiispec 4589529165
addshiftw 707304267
adduispec 2399964333
adduispec_offset 491095416
addumului 0
affir 323219982
catii 474679638
cmpiispec 4131472545
convi 317931
convi_dac 737718
diviiexact 396864315
divis 239013
divis_rem 65910012
diviuexact 22391949
diviuexact_i 29690601
diviuuexact 149898
divri 114310134
divrr 130122708
dvmdii 1685219292
equaliispec 199750533
floorr 5204046
incloop 35267175
incneg 50013
incpos 34964676
int_normalize 856693365
mantissa2nr 49204863
muliifft_dis 15702102
muliifft_dit 30956967
muliifft_spliti 168921
muliifft_unspliti 85290
muliispec 5395221231
muliispec_basecase 5168342589
muliispec_fft 83631
mulliifft_params 85290
muluispec 4854610977
muluui 166566
p_sqrtu1 95559708
p_sqrtu2 92825607
pari_kernel_close 786
pari_kernel_init 788
pari_kernel_version 2
red_montgomery 36216201
remi2n 20104053
resetloop 130656
roundr_up_ip 442583548
setloop 2248395
shiftispec 1287366069
sqrispec 946298271
sqrispec_basecase 936358386
sqrispec_fft 1659
sqrtispec 329894169
sqrtispec1_sh 2734101
sqrtispec2 92554350
sqrtispec2_sh 271257
sqrtr_abs 91768326
sqrtremi 3791937
subiispec 3400334160
subiuspec 1598203452
truncr 2554575
umodiu 1432327728
xmpn_copy 1082226882
xmpn_zero 91768326

Generated by: LCOV version 1.16