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 30674-be81ecfdd4) Lines: 1336 1642 81.4 % Date: 2026-02-12 09:23:52 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4654910
Babai_fast	30136774
Babai_heuristic	289747
GS_extraprec	4727335
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4848314
ZM_flatter	626806
ZM_flatter_rank	624792
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606299
ZM_is_lower	1205060
ZM_is_upper	4236130
ZM_lll_norms	7137337
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4086689
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580722
addmulzu2n	271563
addzi	17783076
affdbldpe	3206859
affdpe	25730609
affidpe	20751814
affii_or_copy_gc	1390409
cget_dblmat	8415048
cget_dblvec	34981891
cget_dpemat	3206854
cget_dpevec	13295901
condition_bound	4727335
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118015479
dbldotsquare	2481147
dblrotate	34539811
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516265
dpe_abssmall	1390418
dpe_addmuluz	342913
dpe_addz	1943120
dpe_cmp	5263268
dpe_cmpmul	5263264
dpe_divz	14075817
dpe_muluz	799872
dpe_mulz	56963804
dpe_negz	244361
dpe_normalize	48108636
dpe_normalize0	108562642
dpe_submuluz	412411
dpe_submulz	51700682
dpe_subz	53731778
dperotate	652350
dpetor	93802
drop	1346958
flat	1346960
flattergram_i	2967
fplll	0
fplll_dpe	1603431
fplll_fast	2103787
fplll_flatter	625753
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44536
get_gramschmidt	1098789
gramschmidt_dynprec	2693917
gramschmidt_upper	1336
gsisinv	5195085
incrementalGSgen	168
itodbl_exp	162350923
kerint	42
kerint0	70
lll	1243328
lll_finish	2164394
lll_trivial	771699
lllall	36699
lllallgen	168
lllfp	5370934
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4095949
mulshift	317718
nbits2prec64	7491984
pari_rint	10767634
potential	1346959
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31866205
rotateG	443655
rotateG_fast	11513280
setG2_fast	16981193
setG2_heuristic	188352
setG_fast	22609311
setG_heuristic	206374
set_line	24880376
sizered	1346960
spread	5852282
submuliu2n	4178178
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501331
submulziu	5923043
submulzu2n	262549
subzi	18524547
truncexpo	12139
u64toi	19880176
u64toineg	668454
update_alpha	11956995
vectail_inplace	2090270

Generated by: LCOV version 1.16