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 30568-0d72d66ef5) Lines: 1115 1153 96.7 %
Date: 2025-12-01 09:22:22 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 234707823
addiispec 4593289506
addshiftw 707687421
adduispec 2401024386
adduispec_offset 491210487
addumului 0
affir 323388339
catii 474730380
cmpiispec 4134995160
convi 317916
convi_dac 737718
diviiexact 397424268
divis 240027
divis_rem 65921004
diviuexact 22432890
diviuexact_i 29701239
diviuuexact 149898
divri 114316020
divrr 130137798
dvmdii 1687477281
equaliispec 199796982
floorr 5204703
incloop 35267175
incneg 50013
incpos 34964676
int_normalize 856790058
mantissa2nr 49219740
muliifft_dis 15702102
muliifft_dit 30956967
muliifft_spliti 168921
muliifft_unspliti 85290
muliispec 5399891091
muliispec_basecase 5172832383
muliispec_fft 83631
mulliifft_params 85290
muluispec 4856086578
muluui 166566
p_sqrtu1 95575245
p_sqrtu2 92840643
pari_kernel_close 786
pari_kernel_init 788
pari_kernel_version 2
red_montgomery 40629555
remi2n 20108415
resetloop 130656
roundr_up_ip 442667077
setloop 2248395
shiftispec 1289461794
sqrispec 951318870
sqrispec_basecase 941378985
sqrispec_fft 1659
sqrtispec 329934546
sqrtispec1_sh 2734602
sqrtispec2 92569356
sqrtispec2_sh 271287
sqrtr_abs 91781790
sqrtremi 3794010
subiispec 3403093284
subiuspec 1598760426
truncr 2555130
umodiu 1432552620
xmpn_copy 1082348187
xmpn_zero 91781790

Generated by: LCOV version 1.16