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 30657-d14c2a9e4e) Lines: 1115 1153 96.7 %
Date: 2026-01-29 09:23:20 Functions: 69 70 98.6 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Zf_add 188081856
Zf_mul 15368832
Zf_mulsqrt2 188081856
Zf_red_destroy 400216536
Zf_shift 206747526
Zf_sqr 456960
Zf_sub 191505564
absdiviu_rem 234809475
addiispec 4596991029
addshiftw 709902720
adduispec 2399214798
adduispec_offset 491096493
addumului 0
affir 323921931
catii 474644892
cmpiispec 4133071356
convi 317999
convi_dac 737838
diviiexact 397150272
divis 239013
divis_rem 65918388
diviuexact 22390146
diviuexact_i 29658654
diviuuexact 149898
divri 114499035
divrr 130287753
dvmdii 1685498382
equaliispec 199021695
floorr 5204907
incloop 35267175
incneg 50013
incpos 34964676
int_normalize 857254914
mantissa2nr 49394457
muliifft_dis 15740316
muliifft_dit 31025376
muliifft_spliti 169248
muliifft_unspliti 85476
muliispec 5399594121
muliispec_basecase 5171431131
muliispec_fft 83772
mulliifft_params 85476
muluispec 4858155864
muluui 166566
p_sqrtu1 95532450
p_sqrtu2 92821791
pari_kernel_close 786
pari_kernel_init 788
pari_kernel_version 2
red_montgomery 36216201
remi2n 20312859
resetloop 130656
roundr_up_ip 442625731
setloop 2248395
shiftispec 1288718592
sqrispec 946371717
sqrispec_basecase 936389592
sqrispec_fft 1704
sqrtispec 329872965
sqrtispec1_sh 2710659
sqrtispec2 92550519
sqrtispec2_sh 271272
sqrtr_abs 91764459
sqrtremi 3768546
subiispec 3402719583
subiuspec 1597426362
truncr 2555445
umodiu 1432358577
xmpn_copy 1082153697
xmpn_zero 91764459

Generated by: LCOV version 1.16