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 30586-ccf601f509) Lines: 1336 1642 81.4 % Date: 2025-12-24 09:20:59 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	44537
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244386
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412411
rotateG	443224
ZM_is_knapsack	606433
ZM_flatter_rank	624841
fplll_flatter	625802
ZM_flatter	626855
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771687
dpe_muluz	799875
get_gramschmidt	1098828
realdotproduct	1183370
ZM_is_lower	1205096
lll	1243313
drop	1347183
potential	1347185
sizered	1347185
flat	1347186
affii_or_copy_gc	1390410
dpe_abssmall	1390417
submulshift	1501323
fplll_dpe	1603385
dpe_addz	1943124
vectail_inplace	2090364
fplll_fast	2103883
lll_finish	2164494
dbldotsquare	2481017
gramschmidt_dynprec	2694369
affdbldpe	3206764
cget_dpemat	3206769
addmuliu2n	4086552
mpabscmp	4097005
submuliu2n	4177642
ZM_is_upper	4236535
addmulziu	4580824
Babai_dpe	4655037
GS_extraprec	4727951
condition_bound	4727952
ZM2_lll_norms	4847705
gsisinv	5195688
dpe_cmpmul	5263393
dpe_cmp	5263398
lllfp	5371591
spread	5853018
submulziu	5923266
ZM_lll_norms	7136818
nbits2prec64	7493088
cget_dblmat	8415518
addmuliu64_inplace	9572959
submuliu64_inplace	9623916
pari_rint	10774852
rotateG_fast	11522065
update_alpha	11965364
cget_dpevec	13295572
dpe_divz	14076509
dpe_abscmp	14516975
setG2_fast	16991361
addzi	17783213
subzi	18524614
u64toi	19881520
affidpe	20752298
setG_fast	22619889
set_line	24890455
affdpe	25731403
Babai_fast	30150299
rotate	31884147
dblrotate	34566052
cget_dblvec	34985050
dpe_normalize	48111620
dpe_submulz	51703759
dpe_subz	53734912
dpe_mulz	56967036
dpe_normalize0	108569332
dbldotproduct	118053779
itodbl_exp	162361873

Generated by: LCOV version 1.16