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 30660-09c6d0ed2e) Lines: 1115 1153 96.7 %
Date: 2026-02-01 09:23:44 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 318001
Zf_sqr 456960
convi_dac 737838
setloop 2248395
truncr 2555445
sqrtispec1_sh 2710659
sqrtremi 3768546
floorr 5204907
Zf_mul 15368832
muliifft_dis 15740316
remi2n 20312862
diviuexact 22390146
diviuexact_i 29658654
muliifft_dit 31025376
incpos 34964676
incloop 35267175
red_montgomery 36216201
mantissa2nr 49394460
divis_rem 65918388
sqrtr_abs 91764561
xmpn_zero 91764561
sqrtispec2 92550621
p_sqrtu2 92821893
p_sqrtu1 95532552
divri 114499065
divrr 130288170
Zf_add 188081856
Zf_mulsqrt2 188081856
Zf_sub 191505564
equaliispec 199021695
Zf_shift 206747526
absdiviu_rem 234809517
affir 323922654
sqrtispec 329873247
diviiexact 397150296
Zf_red_destroy 400216536
roundr_up_ip 442626232
catii 474645252
adduispec_offset 491096493
addshiftw 709902900
int_normalize 857255274
sqrispec_basecase 936390750
sqrispec 946372875
xmpn_copy 1082154537
shiftispec 1288718847
umodiu 1432358577
subiuspec 1597426455
dvmdii 1685498604
adduispec 2399215125
subiispec 3402719817
cmpiispec 4133071728
addiispec 4596991371
muluispec 4858156644
muliispec_basecase 5171431296
muliispec 5399594286

Generated by: LCOV version 1.16