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 30604-e5d817ee12) Lines: 1336 1642 81.4 % Date: 2026-01-09 09:21:43 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	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244359
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412411
rotateG	443223
ZM_is_knapsack	606174
ZM_flatter_rank	624804
fplll_flatter	625765
ZM_flatter	626818
dperotate	652348
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771703
dpe_muluz	799873
get_gramschmidt	1098806
realdotproduct	1183370
ZM_is_lower	1205079
lll	1243328
flat	1347014
drop	1347015
potential	1347016
sizered	1347017
affii_or_copy_gc	1390397
dpe_abssmall	1390416
submulshift	1501323
fplll_dpe	1603451
dpe_addz	1943125
vectail_inplace	2090155
fplll_fast	2103655
lll_finish	2164283
dbldotsquare	2480871
gramschmidt_dynprec	2694030
affdbldpe	3206900
cget_dpemat	3206903
addmuliu2n	4092017
mpabscmp	4095881
submuliu2n	4185293
ZM_is_upper	4236262
addmulziu	4580669
Babai_dpe	4654992
condition_bound	4727551
GS_extraprec	4727552
ZM2_lll_norms	4848652
gsisinv	5195307
dpe_cmpmul	5263312
dpe_cmp	5263322
lllfp	5371101
spread	5852375
submulziu	5923188
ZM_lll_norms	7137568
nbits2prec64	7492285
cget_dblmat	8414672
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10766480
rotateG_fast	11513807
update_alpha	11957135
cget_dpevec	13295796
dpe_divz	14075998
dpe_abscmp	14516442
setG2_fast	16981693
addzi	17782674
subzi	18524403
u64toi	19880176
affidpe	20751833
setG_fast	22609055
set_line	24879522
affdpe	25730723
Babai_fast	30138325
rotate	31865672
dblrotate	34541372
cget_dblvec	34978938
dpe_normalize	48109523
dpe_submulz	51701402
dpe_subz	53732462
dpe_mulz	56964567
dpe_normalize0	108564453
dbldotproduct	118025233
itodbl_exp	162332976

Generated by: LCOV version 1.16