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: 2026-02-10 09:23:17 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655130
Babai_fast	30144747
Babai_heuristic	288770
GS_extraprec	4727803
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848604
ZM_flatter	626843
ZM_flatter_rank	624829
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606447
ZM_is_lower	1205113
ZM_is_upper	4236500
ZM_lll_norms	7137822
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087417
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580735
addmulzu2n	271563
addzi	17783508
affdbldpe	3206967
affdpe	25731762
affidpe	20752727
affii_or_copy_gc	1390418
cget_dblmat	8415875
cget_dblvec	34986253
cget_dpemat	3206963
cget_dpevec	13296132
condition_bound	4727806
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118045177
dbldotsquare	2481136
dblrotate	34548853
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14517158
dpe_abssmall	1390430
dpe_addmuluz	342911
dpe_addz	1943126
dpe_cmp	5263501
dpe_cmpmul	5263491
dpe_divz	14076744
dpe_muluz	799874
dpe_mulz	56967730
dpe_negz	244397
dpe_normalize	48112218
dpe_normalize0	108570832
dpe_submuluz	412412
dpe_submulz	51704341
dpe_subz	53735488
dperotate	652350
dpetor	93802
drop	1347121
flat	1347122
flattergram_i	2967
fplll	0
fplll_dpe	1603482
fplll_fast	2103980
fplll_flatter	625790
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098841
gramschmidt_dynprec	2694243
gramschmidt_upper	1336
gsisinv	5195567
incrementalGSgen	168
itodbl_exp	162386675
kerint	42
kerint0	70
lll	1243328
lll_finish	2164605
lll_trivial	771703
lllall	36699
lllallgen	168
lllfp	5371422
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096848
mulshift	317717
nbits2prec64	7492782
pari_rint	10769056
potential	1347121
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31873157
rotateG	443224
rotateG_fast	11516310
setG2_fast	16985788
setG2_heuristic	187610
setG_fast	22614689
setG_heuristic	205626
set_line	24885381
sizered	1347122
spread	5852912
submuliu2n	4178406
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923305
submulzu2n	262549
subzi	18525073
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959632
vectail_inplace	2090476

Generated by: LCOV version 1.16