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 30587-f85873d515) Lines: 1336 1642 81.4 % Date: 2025-12-27 09:21:13 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	44536
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244387
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412408
rotateG	443222
ZM_is_knapsack	606306
ZM_flatter_rank	624827
fplll_flatter	625788
ZM_flatter	626842
dperotate	652346
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771687
dpe_muluz	799870
get_gramschmidt	1098815
realdotproduct	1183370
ZM_is_lower	1205088
lll	1243315
drop	1347108
flat	1347108
sizered	1347108
potential	1347109
affii_or_copy_gc	1390393
dpe_abssmall	1390415
submulshift	1501323
fplll_dpe	1603373
dpe_addz	1943124
vectail_inplace	2090225
fplll_fast	2103739
lll_finish	2164353
dbldotsquare	2480844
gramschmidt_dynprec	2694215
affdbldpe	3206744
cget_dpemat	3206749
addmuliu2n	4090631
mpabscmp	4096478
submuliu2n	4182864
ZM_is_upper	4236384
addmulziu	4580812
Babai_dpe	4654953
GS_extraprec	4727727
condition_bound	4727727
ZM2_lll_norms	4847590
gsisinv	5195469
dpe_cmpmul	5263321
dpe_cmp	5263327
lllfp	5371369
spread	5852668
submulziu	5923193
ZM_lll_norms	7136572
nbits2prec64	7492667
cget_dblmat	8414935
addmuliu64_inplace	9572959
submuliu64_inplace	9623916
pari_rint	10773517
rotateG_fast	11520904
update_alpha	11964177
cget_dpevec	13295326
dpe_divz	14076149
dpe_abscmp	14516624
setG2_fast	16989218
addzi	17783209
subzi	18524676
u64toi	19881520
affidpe	20751764
setG_fast	22617533
set_line	24888454
affdpe	25730997
Babai_fast	30147318
rotate	31880595
dblrotate	34562616
cget_dblvec	34981251
dpe_normalize	48110258
dpe_submulz	51702412
dpe_subz	53733503
dpe_mulz	56965575
dpe_normalize0	108565858
dbldotproduct	118048032
itodbl_exp	162391137

Generated by: LCOV version 1.16