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: 2025-12-29 09:21:39 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	244369
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412411
rotateG	443224
ZM_is_knapsack	606359
ZM_flatter_rank	624787
fplll_flatter	625748
ZM_flatter	626801
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771689
dpe_muluz	799875
get_gramschmidt	1098792
realdotproduct	1183370
ZM_is_lower	1205062
lll	1243315
drop	1346970
potential	1346970
flat	1346971
sizered	1346971
affii_or_copy_gc	1390415
dpe_abssmall	1390432
submulshift	1501323
fplll_dpe	1603356
dpe_addz	1943128
vectail_inplace	2090252
fplll_fast	2103774
lll_finish	2164378
dbldotsquare	2480827
gramschmidt_dynprec	2693942
affdbldpe	3206710
cget_dpemat	3206711
addmuliu2n	4087327
mpabscmp	4096264
submuliu2n	4178391
ZM_is_upper	4236087
addmulziu	4580801
Babai_dpe	4654938
GS_extraprec	4727314
condition_bound	4727315
ZM2_lll_norms	4847130
gsisinv	5195065
dpe_cmpmul	5263266
dpe_cmp	5263278
lllfp	5370955
spread	5852326
submulziu	5923336
ZM_lll_norms	7136120
nbits2prec64	7492026
cget_dblmat	8415090
addmuliu64_inplace	9572959
submuliu64_inplace	9623916
pari_rint	10774241
rotateG_fast	11521532
update_alpha	11964844
cget_dpevec	13295166
dpe_divz	14076298
dpe_abscmp	14516731
setG2_fast	16990623
addzi	17783093
subzi	18524663
u64toi	19881520
affidpe	20751840
setG_fast	22618824
set_line	24889502
affdpe	25731046
Babai_fast	30149074
rotate	31882549
dblrotate	34564528
cget_dblvec	34982647
dpe_normalize	48111345
dpe_submulz	51703441
dpe_subz	53734535
dpe_mulz	56966581
dpe_normalize0	108568689
dbldotproduct	118051210
itodbl_exp	162374866

Generated by: LCOV version 1.16