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 30580-ef5a862e7f) Lines: 1115 1153 96.7 %
Date: 2025-12-19 09:23:05 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 234699771
addiispec 4595298102
addshiftw 707905122
adduispec 2401699725
adduispec_offset 491215167
addumului 0
affir 323339811
catii 474718374
cmpiispec 4136188737
convi 317892
convi_dac 737352
diviiexact 397946886
divis 240075
divis_rem 65920113
diviuexact 22441548
diviuexact_i 29699304
diviuuexact 149898
divri 114315663
divrr 130134171
dvmdii 1688453226
equaliispec 199808859
floorr 5204493
incloop 35267175
incneg 50013
incpos 34964676
int_normalize 856781304
mantissa2nr 49216710
muliifft_dis 15702102
muliifft_dit 30956967
muliifft_spliti 168921
muliifft_unspliti 85290
muliispec 5402525565
muliispec_basecase 5175354849
muliispec_fft 83631
mulliifft_params 85290
muluispec 4858842120
muluui 166566
p_sqrtu1 95571795
p_sqrtu2 92837283
pari_kernel_close 786
pari_kernel_init 788
pari_kernel_version 2
red_montgomery 40602168
remi2n 20108268
resetloop 130656
roundr_up_ip 442642507
setloop 2248395
shiftispec 1289899065
sqrispec 951339744
sqrispec_basecase 941399859
sqrispec_fft 1659
sqrtispec 329925210
sqrtispec1_sh 2734512
sqrtispec2 92566023
sqrtispec2_sh 271260
sqrtr_abs 91778400
sqrtremi 3793950
subiispec 3403891017
subiuspec 1599175218
truncr 2554992
umodiu 1434181098
xmpn_copy 1082319069
xmpn_zero 91778400

Generated by: LCOV version 1.16