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
Babai_dpe	4655174
Babai_fast	30147379
Babai_heuristic	288770
GS_extraprec	4728000
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848839
ZM_flatter	626857
ZM_flatter_rank	624843
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606543
ZM_is_lower	1205118
ZM_is_upper	4236674
ZM_lll_norms	7138162
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4088100
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580812
addmulzu2n	271563
addzi	17783255
affdbldpe	3206954
affdpe	25731756
affidpe	20753092
affii_or_copy_gc	1390415
cget_dblmat	8416326
cget_dblvec	34988933
cget_dpemat	3206963
cget_dpevec	13296580
condition_bound	4728000
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118054381
dbldotsquare	2481423
dblrotate	34552158
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14517293
dpe_abssmall	1390427
dpe_addmuluz	342910
dpe_addz	1943124
dpe_cmp	5263523
dpe_cmpmul	5263525
dpe_divz	14076852
dpe_muluz	799873
dpe_mulz	56968164
dpe_negz	244380
dpe_normalize	48112764
dpe_normalize0	108571908
dpe_submuluz	412412
dpe_submulz	51704748
dpe_subz	53735859
dperotate	652350
dpetor	93802
drop	1347205
flat	1347206
flattergram_i	2967
fplll	0
fplll_dpe	1603482
fplll_fast	2104076
fplll_flatter	625804
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098847
gramschmidt_dynprec	2694410
gramschmidt_upper	1336
gsisinv	5195755
incrementalGSgen	168
itodbl_exp	162401941
kerint	42
kerint0	70
lll	1243329
lll_finish	2164690
lll_trivial	771702
lllall	36699
lllallgen	168
lllfp	5371674
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097225
mulshift	317717
nbits2prec64	7493217
pari_rint	10770486
potential	1347205
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31876436
rotateG	443224
rotateG_fast	11517403
setG2_fast	16987556
setG2_heuristic	187610
setG_fast	22616940
setG_heuristic	205626
set_line	24888190
sizered	1347206
spread	5853193
submuliu2n	4179036
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923266
submulzu2n	262549
subzi	18524890
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11960705
vectail_inplace	2090567

Generated by: LCOV version 1.16