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 30711-c92306d4b4) Lines: 1115 1153 96.7 %
Date: 2026-02-25 09:24:21 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 789
pari_kernel_init 791
sqrispec_fft 1704
incneg 50013
muliispec_fft 83817
muliifft_unspliti 85521
mulliifft_params 85521
resetloop 130656
diviuuexact 149898
muluui 166566
muliifft_spliti 169338
divis 239031
sqrtispec2_sh 271275
convi 318326
Zf_sqr 456960
convi_dac 739068
setloop 2248395
truncr 2555445
sqrtispec1_sh 2710683
sqrtremi 3768579
floorr 5204907
Zf_mul 15381120
muliifft_dis 15752559
remi2n 20315364
diviuexact 22390323
diviuexact_i 29660823
muliifft_dit 31049862
incpos 34964676
incloop 35267175
red_montgomery 36216750
mantissa2nr 49394493
divis_rem 65918394
sqrtr_abs 91764582
xmpn_zero 91764582
sqrtispec2 92550648
p_sqrtu2 92821923
p_sqrtu1 95532606
divri 114499098
divrr 130288173
Zf_add 188238528
Zf_mulsqrt2 188238528
Zf_sub 191668980
equaliispec 198956025
Zf_shift 206929605
absdiviu_rem 234812985
affir 323929146
sqrtispec 329873292
diviiexact 387226863
Zf_red_destroy 400568400
roundr_up_ip 442626262
catii 474645288
adduispec_offset 491115630
addshiftw 710088270
int_normalize 857474613
sqrispec_basecase 936349047
sqrispec 946330356
xmpn_copy 1082154645
shiftispec 1283668158
umodiu 1428391176
subiuspec 1592174313
dvmdii 1681481304
adduispec 2390505345
subiispec 3398096658
cmpiispec 4116999438
addiispec 4589002455
muluispec 4837462446
muliispec_basecase 5149731156
muliispec 5377987695

Generated by: LCOV version 1.16