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
Babai_dpe	4654992
Babai_fast	30138325
Babai_heuristic	288770
GS_extraprec	4727552
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848652
ZM_flatter	626818
ZM_flatter_rank	624804
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606174
ZM_is_lower	1205079
ZM_is_upper	4236262
ZM_lll_norms	7137568
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4092017
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580669
addmulzu2n	271563
addzi	17782674
affdbldpe	3206900
affdpe	25730723
affidpe	20751833
affii_or_copy_gc	1390397
cget_dblmat	8414672
cget_dblvec	34978938
cget_dpemat	3206903
cget_dpevec	13295796
condition_bound	4727551
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118025233
dbldotsquare	2480871
dblrotate	34541372
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516442
dpe_abssmall	1390416
dpe_addmuluz	342913
dpe_addz	1943125
dpe_cmp	5263322
dpe_cmpmul	5263312
dpe_divz	14075998
dpe_muluz	799873
dpe_mulz	56964567
dpe_negz	244359
dpe_normalize	48109523
dpe_normalize0	108564453
dpe_submuluz	412411
dpe_submulz	51701402
dpe_subz	53732462
dperotate	652348
dpetor	93802
drop	1347015
flat	1347014
flattergram_i	2967
fplll	0
fplll_dpe	1603451
fplll_fast	2103655
fplll_flatter	625765
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1098806
gramschmidt_dynprec	2694030
gramschmidt_upper	1336
gsisinv	5195307
incrementalGSgen	168
itodbl_exp	162332976
kerint	42
kerint0	70
lll	1243328
lll_finish	2164283
lll_trivial	771703
lllall	36699
lllallgen	168
lllfp	5371101
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4095881
mulshift	317717
nbits2prec64	7492285
pari_rint	10766480
potential	1347016
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31865672
rotateG	443223
rotateG_fast	11513807
setG2_fast	16981693
setG2_heuristic	187610
setG_fast	22609055
setG_heuristic	205626
set_line	24879522
sizered	1347017
spread	5852375
submuliu2n	4185293
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923188
submulzu2n	262549
subzi	18524403
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11957135
vectail_inplace	2090155

Generated by: LCOV version 1.16