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 30651-3e52073f6d) Lines: 1115 1153 96.7 %
Date: 2026-01-28 09:23:10 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 786
pari_kernel_init 788
sqrispec_fft 1704
incneg 50013
muliispec_fft 83772
muliifft_unspliti 85476
mulliifft_params 85476
resetloop 130656
diviuuexact 149898
muluui 166566
muliifft_spliti 169248
divis 239013
sqrtispec2_sh 271272
convi 317997
Zf_sqr 456960
convi_dac 737838
setloop 2248395
truncr 2555445
sqrtispec1_sh 2710659
sqrtremi 3768546
floorr 5204907
Zf_mul 15368832
muliifft_dis 15740316
remi2n 20312859
diviuexact 22390146
diviuexact_i 29658654
muliifft_dit 31025376
incpos 34964676
incloop 35267175
red_montgomery 36216201
mantissa2nr 49394457
divis_rem 65918388
sqrtr_abs 91764459
xmpn_zero 91764459
sqrtispec2 92550519
p_sqrtu2 92821791
p_sqrtu1 95532450
divri 114499035
divrr 130287753
Zf_add 188081856
Zf_mulsqrt2 188081856
Zf_sub 191505564
equaliispec 199021695
Zf_shift 206747526
absdiviu_rem 234809475
affir 323921931
sqrtispec 329872965
diviiexact 397150272
Zf_red_destroy 400216536
roundr_up_ip 442625731
catii 474644892
adduispec_offset 491096493
addshiftw 709902720
int_normalize 857254914
sqrispec_basecase 936389397
sqrispec 946371522
xmpn_copy 1082153697
shiftispec 1288718592
umodiu 1432358577
subiuspec 1597426362
dvmdii 1685498382
adduispec 2399214798
subiispec 3402719583
cmpiispec 4133071356
addiispec 4596991029
muluispec 4858156059
muliispec_basecase 5171431326
muliispec 5399594316

Generated by: LCOV version 1.16