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 30617-dd5c93fb0e) Lines: 1336 1642 81.4 % Date: 2026-01-20 09:21:06 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	244376
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342909
absrsmall2	401466
dpe_submuluz	412410
rotateG	443224
ZM_is_knapsack	606249
ZM_flatter_rank	624817
fplll_flatter	625778
ZM_flatter	626831
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771699
dpe_muluz	799870
get_gramschmidt	1098820
realdotproduct	1183370
ZM_is_lower	1205098
lll	1243328
drop	1347057
flat	1347058
potential	1347058
sizered	1347058
affii_or_copy_gc	1390394
dpe_abssmall	1390409
submulshift	1501323
fplll_dpe	1603468
dpe_addz	1943122
vectail_inplace	2090252
fplll_fast	2103770
lll_finish	2164380
dbldotsquare	2481167
gramschmidt_dynprec	2694115
affdbldpe	3206929
cget_dpemat	3206932
addmuliu2n	4087552
mpabscmp	4096033
submuliu2n	4180229
ZM_is_upper	4236355
addmulziu	4580654
Babai_dpe	4655043
GS_extraprec	4727588
condition_bound	4727588
ZM2_lll_norms	4848719
gsisinv	5195345
dpe_cmpmul	5263384
dpe_cmp	5263387
lllfp	5371228
spread	5852497
submulziu	5923181
ZM_lll_norms	7137698
nbits2prec64	7492470
cget_dblmat	8415063
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10767209
rotateG_fast	11513256
update_alpha	11956615
cget_dpevec	13296364
dpe_divz	14075897
dpe_abscmp	14516398
setG2_fast	16980726
addzi	17782682
subzi	18524396
u64toi	19880176
affidpe	20752048
setG_fast	22608433
set_line	24878750
affdpe	25730684
Babai_fast	30136301
rotate	31864123
dblrotate	34539748
cget_dblvec	34980998
dpe_normalize	48108316
dpe_submulz	51700232
dpe_subz	53731313
dpe_mulz	56963498
dpe_normalize0	108561903
dbldotproduct	118011277
itodbl_exp	162301606

Generated by: LCOV version 1.16