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 30764-6b81f1f3fa) Lines: 1336 1642 81.4 % Date: 2026-03-24 09:26:44 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
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244386
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606627
ZM_flatter_rank	624823
fplll_flatter	625784
ZM_flatter	626837
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771779
dpe_muluz	799869
get_gramschmidt	1099240
realdotproduct	1183370
ZM_is_lower	1205460
lll	1243426
drop	1346892
potential	1346892
flat	1346893
sizered	1346893
affii_or_copy_gc	1390424
dpe_abssmall	1390429
submulshift	1499787
fplll_dpe	1603881
dpe_addz	1943123
vectail_inplace	2091099
fplll_fast	2104657
lll_finish	2165264
dbldotsquare	2482592
gramschmidt_dynprec	2693785
cget_dpemat	3207755
affdbldpe	3207756
addmuliu2n	4087067
mpabscmp	4096177
submuliu2n	4174111
ZM_is_upper	4236440
addmulziu	4580779
Babai_dpe	4656232
GS_extraprec	4726896
condition_bound	4726896
ZM2_lll_norms	4847630
gsisinv	5195067
dpe_cmpmul	5264504
dpe_cmp	5264506
lllfp	5370879
spread	5852591
submulziu	5923408
ZM_lll_norms	7137531
nbits2prec64	7491856
cget_dblmat	8418600
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769187
rotateG_fast	11516386
update_alpha	11959690
cget_dpevec	13301026
dpe_divz	14078372
dpe_abscmp	14518750
setG2_fast	16984971
addzi	17783653
subzi	18525309
u64toi	19876486
affidpe	20756688
setG_fast	22615876
set_line	24887873
affdpe	25733176
Babai_fast	30143663
rotate	31873560
dblrotate	34549146
cget_dblvec	34998845
dpe_normalize	48111801
dpe_submulz	51702918
dpe_subz	53734067
dpe_mulz	56967348
dpe_normalize0	108572124
dbldotproduct	118022818
itodbl_exp	162347058

Generated by: LCOV version 1.16