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 30634-7c77b4d1a9) Lines: 1336 1642 81.4 % Date: 2026-01-26 09:23:16 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	244391
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412409
rotateG	443224
ZM_is_knapsack	606440
ZM_flatter_rank	624816
fplll_flatter	625777
ZM_flatter	626830
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771704
dpe_muluz	799873
get_gramschmidt	1098830
realdotproduct	1183370
ZM_is_lower	1205106
lll	1243329
drop	1347061
flat	1347062
potential	1347062
sizered	1347062
affii_or_copy_gc	1390398
dpe_abssmall	1390418
submulshift	1501323
fplll_dpe	1603475
dpe_addz	1943124
vectail_inplace	2090448
fplll_fast	2103976
lll_finish	2164574
dbldotsquare	2481273
gramschmidt_dynprec	2694124
affdbldpe	3206946
cget_dpemat	3206953
addmuliu2n	4086897
mpabscmp	4096659
submuliu2n	4177824
ZM_is_upper	4236378
addmulziu	4580738
Babai_dpe	4655151
GS_extraprec	4727576
condition_bound	4727576
ZM2_lll_norms	4848476
gsisinv	5195339
dpe_cmpmul	5263462
dpe_cmp	5263471
lllfp	5371238
spread	5852674
submulziu	5923204
ZM_lll_norms	7137651
nbits2prec64	7492491
cget_dblmat	8415890
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10769279
rotateG_fast	11516483
update_alpha	11959852
cget_dpevec	13296420
dpe_divz	14076643
dpe_abscmp	14517095
setG2_fast	16986061
addzi	17783071
subzi	18524603
u64toi	19880176
affidpe	20752783
setG_fast	22614996
set_line	24885270
affdpe	25731609
Babai_fast	30145368
rotate	31873728
dblrotate	34549347
cget_dblvec	34986820
dpe_normalize	48111970
dpe_submulz	51704055
dpe_subz	53735129
dpe_mulz	56967373
dpe_normalize0	108570022
dbldotproduct	118046653
itodbl_exp	162348578

Generated by: LCOV version 1.16