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 30678-a23e500d22) Lines: 1336 1642 81.4 % Date: 2026-02-15 09:22:35 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	44539
RgM_is_square_mat	45828
dpetor	93799
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244400
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342912
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606360
ZM_flatter_rank	624834
fplll_flatter	625795
ZM_flatter	626848
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771699
dpe_muluz	799874
get_gramschmidt	1098839
realdotproduct	1183370
ZM_is_lower	1205115
lll	1243329
drop	1347170
flat	1347170
sizered	1347170
potential	1347171
affii_or_copy_gc	1390407
dpe_abssmall	1390425
submulshift	1501323
fplll_dpe	1603480
dpe_addz	1943124
vectail_inplace	2090400
fplll_fast	2103899
lll_finish	2164527
dbldotsquare	2481184
gramschmidt_dynprec	2694340
affdbldpe	3206956
cget_dpemat	3206961
addmuliu2n	4087694
mpabscmp	4096869
submuliu2n	4178747
ZM_is_upper	4236606
addmulziu	4580773
Babai_dpe	4655140
GS_extraprec	4727921
condition_bound	4727924
ZM2_lll_norms	4848926
gsisinv	5195681
dpe_cmpmul	5263486
dpe_cmp	5263494
lllfp	5371568
spread	5852935
submulziu	5923275
ZM_lll_norms	7138067
nbits2prec64	7493030
cget_dblmat	8415581
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10768813
rotateG_fast	11515898
update_alpha	11959229
cget_dpevec	13296408
dpe_divz	14076592
dpe_abscmp	14517039
setG2_fast	16985071
addzi	17783141
subzi	18524754
u64toi	19880176
affidpe	20752781
setG_fast	22613839
set_line	24884623
affdpe	25731484
Babai_fast	30143625
rotate	31871988
dblrotate	34547724
cget_dblvec	34985201
dpe_normalize	48111784
dpe_submulz	51703848
dpe_subz	53734989
dpe_mulz	56967157
dpe_normalize0	108569714
dbldotproduct	118040434
itodbl_exp	162364399

Generated by: LCOV version 1.16