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

Generated by: LCOV version 1.16