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 30631-5f55634266) Lines: 1336 1642 81.4 % Date: 2026-01-24 09:23:06 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	44539
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244380
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342910
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606543
ZM_flatter_rank	624843
fplll_flatter	625804
ZM_flatter	626857
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771702
dpe_muluz	799873
get_gramschmidt	1098847
realdotproduct	1183370
ZM_is_lower	1205118
lll	1243329
drop	1347205
potential	1347205
flat	1347206
sizered	1347206
affii_or_copy_gc	1390415
dpe_abssmall	1390427
submulshift	1501323
fplll_dpe	1603482
dpe_addz	1943124
vectail_inplace	2090567
fplll_fast	2104076
lll_finish	2164690
dbldotsquare	2481423
gramschmidt_dynprec	2694410
affdbldpe	3206954
cget_dpemat	3206963
addmuliu2n	4088100
mpabscmp	4097225
submuliu2n	4179036
ZM_is_upper	4236674
addmulziu	4580812
Babai_dpe	4655174
GS_extraprec	4728000
condition_bound	4728000
ZM2_lll_norms	4848839
gsisinv	5195755
dpe_cmp	5263523
dpe_cmpmul	5263525
lllfp	5371674
spread	5853193
submulziu	5923266
ZM_lll_norms	7138162
nbits2prec64	7493217
cget_dblmat	8416326
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10770486
rotateG_fast	11517403
update_alpha	11960705
cget_dpevec	13296580
dpe_divz	14076852
dpe_abscmp	14517293
setG2_fast	16987556
addzi	17783255
subzi	18524890
u64toi	19880176
affidpe	20753092
setG_fast	22616940
set_line	24888190
affdpe	25731756
Babai_fast	30147379
rotate	31876436
dblrotate	34552158
cget_dblvec	34988933
dpe_normalize	48112764
dpe_submulz	51704748
dpe_subz	53735859
dpe_mulz	56968164
dpe_normalize0	108571908
dbldotproduct	118054381
itodbl_exp	162401941

Generated by: LCOV version 1.16