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 30660-09c6d0ed2e) Lines: 1336 1642 81.4 % Date: 2026-02-01 09:23:44 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655184
Babai_fast	30145376
Babai_heuristic	288770
GS_extraprec	4727945
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4849002
ZM_flatter	626854
ZM_flatter_rank	624840
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606415
ZM_is_lower	1205124
ZM_is_upper	4236669
ZM_lll_norms	7138201
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4088018
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580797
addmulzu2n	271563
addzi	17783422
affdbldpe	3206985
affdpe	25731782
affidpe	20753029
affii_or_copy_gc	1390417
cget_dblmat	8415838
cget_dblvec	34986668
cget_dpemat	3206986
cget_dpevec	13296603
condition_bound	4727945
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118049205
dbldotsquare	2481312
dblrotate	34549646
do_SWAPgen	196
dpeM_diagonal_shallow	20146
dpe_abscmp	14517185
dpe_abssmall	1390433
dpe_addmuluz	342912
dpe_addz	1943127
dpe_cmp	5263527
dpe_cmpmul	5263521
dpe_divz	14076780
dpe_muluz	799874
dpe_mulz	56967797
dpe_negz	244384
dpe_normalize	48112213
dpe_normalize0	108571023
dpe_submuluz	412411
dpe_submulz	51704364
dpe_subz	53735482
dperotate	652350
dpetor	93800
drop	1347196
flat	1347197
flattergram_i	2967
fplll	0
fplll_dpe	1603499
fplll_fast	2103952
fplll_flatter	625801
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1098852
gramschmidt_dynprec	2694392
gramschmidt_upper	1336
gsisinv	5195705
incrementalGSgen	168
itodbl_exp	162399554
kerint	42
kerint0	70
lll	1243329
lll_finish	2164570
lll_trivial	771706
lllall	36699
lllallgen	168
lllfp	5371644
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097027
mulshift	317717
nbits2prec64	7493128
pari_rint	10769309
potential	1347197
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31873874
rotateG	443224
rotateG_fast	11516548
setG2_fast	16986181
setG2_heuristic	187610
setG_fast	22615235
setG_heuristic	205626
set_line	24886499
sizered	1347196
spread	5853022
submuliu2n	4178919
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923301
submulzu2n	262549
subzi	18525001
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959849
vectail_inplace	2090448

Generated by: LCOV version 1.16