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:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

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 - basemath - lll.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30711-c92306d4b4) Lines: 1336 1642 81.4 % Date: 2026-02-25 09:24:21 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655076
Babai_fast	30143832
Babai_heuristic	288770
GS_extraprec	4727665
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848657
ZM_flatter	626833
ZM_flatter_rank	624819
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606397
ZM_is_lower	1205092
ZM_is_upper	4236401
ZM_lll_norms	7137814
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087269
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580819
addmulzu2n	271563
addzi	17783465
affdbldpe	3206927
affdpe	25731431
affidpe	20752499
affii_or_copy_gc	1390415
cget_dblmat	8415646
cget_dblvec	34985192
cget_dpemat	3206923
cget_dpevec	13296114
condition_bound	4727665
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118043061
dbldotsquare	2481139
dblrotate	34547506
do_SWAPgen	196
dpeM_diagonal_shallow	20146
dpe_abscmp	14516919
dpe_abssmall	1390428
dpe_addmuluz	342913
dpe_addz	1943128
dpe_cmp	5263427
dpe_cmpmul	5263416
dpe_divz	14076505
dpe_muluz	799874
dpe_mulz	56966974
dpe_negz	244383
dpe_normalize	48111649
dpe_normalize0	108569189
dpe_submuluz	412411
dpe_submulz	51703711
dpe_subz	53734775
dperotate	652348
dpetor	93800
drop	1347080
flat	1347080
flattergram_i	2967
fplll	0
fplll_dpe	1603465
fplll_fast	2103888
fplll_flatter	625780
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098818
gramschmidt_dynprec	2694160
gramschmidt_upper	1336
gsisinv	5195418
incrementalGSgen	168
itodbl_exp	162367977
kerint	42
kerint0	70
lll	1243319
lll_finish	2164527
lll_trivial	771698
lllall	36699
lllallgen	168
lllfp	5371294
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096642
mulshift	317717
nbits2prec64	7492550
pari_rint	10768498
potential	1347080
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31871882
rotateG	443223
rotateG_fast	11515872
setG2_fast	16985125
setG2_heuristic	187610
setG_fast	22613859
setG_heuristic	205626
set_line	24884881
sizered	1347080
spread	5852713
submuliu2n	4178251
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923203
submulzu2n	262549
subzi	18524942
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959200
vectail_inplace	2090401

Generated by: LCOV version 1.16