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 30772-246cd0a587) Lines: 1336 1642 81.4 % Date: 2026-03-28 09:27:57 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656188
Babai_fast	30142648
Babai_heuristic	289747
GS_extraprec	4726835
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4847495
ZM_flatter	626821
ZM_flatter_rank	624807
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606633
ZM_is_lower	1205453
ZM_is_upper	4236360
ZM_lll_norms	7137400
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4086728
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580758
addmulzu2n	271563
addzi	17783528
affdbldpe	3207732
affdpe	25733068
affidpe	20756504
affii_or_copy_gc	1390426
cget_dblmat	8418582
cget_dblvec	34998414
cget_dpemat	3207726
cget_dpevec	13300775
condition_bound	4726835
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118019676
dbldotsquare	2482509
dblrotate	34548169
do_SWAPgen	196
dpeM_diagonal_shallow	20139
dpe_abscmp	14518687
dpe_abssmall	1390430
dpe_addmuluz	342906
dpe_addz	1943122
dpe_cmp	5264479
dpe_cmpmul	5264471
dpe_divz	14078296
dpe_muluz	799873
dpe_mulz	56967123
dpe_negz	244389
dpe_normalize	48111625
dpe_normalize0	108571685
dpe_submuluz	412418
dpe_submulz	51702740
dpe_subz	53733879
dperotate	652350
dpetor	93771
drop	1346857
flat	1346857
flattergram_i	2967
fplll	0
fplll_dpe	1603865
fplll_fast	2104652
fplll_flatter	625768
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44539
get_gramschmidt	1099235
gramschmidt_dynprec	2693715
gramschmidt_upper	1336
gsisinv	5195014
incrementalGSgen	168
itodbl_exp	162341059
kerint	28
kerint0	56
lll	1243427
lll_finish	2165262
lll_trivial	771776
lllall	36699
lllallgen	168
lllfp	5370772
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096069
mulshift	317611
nbits2prec64	7491732
pari_rint	10769366
potential	1346857
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31874747
rotateG	443655
rotateG_fast	11516066
setG2_fast	16984822
setG2_heuristic	188352
setG_fast	22615675
setG_heuristic	206374
set_line	24887905
sizered	1346858
spread	5852544
submuliu2n	4173324
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499795
submulziu	5923347
submulzu2n	262549
subzi	18525137
truncexpo	12139
u64toi	19876486
u64toineg	668118
update_alpha	11959785
vectail_inplace	2091086

Generated by: LCOV version 1.16