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 30651-3e52073f6d) Lines: 1336 1642 81.4 % Date: 2026-01-28 09:23:10 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4654990
Babai_fast	30136566
Babai_heuristic	288770
GS_extraprec	4727563
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848611
ZM_flatter	626824
ZM_flatter_rank	624810
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606266
ZM_is_lower	1205083
ZM_is_upper	4236325
ZM_lll_norms	7137614
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4088392
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580806
addmulzu2n	271563
addzi	17783281
affdbldpe	3206909
affdpe	25730781
affidpe	20751942
affii_or_copy_gc	1390421
cget_dblmat	8415032
cget_dblvec	34981005
cget_dpemat	3206911
cget_dpevec	13296168
condition_bound	4727563
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118015112
dbldotsquare	2481129
dblrotate	34539541
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516360
dpe_abssmall	1390431
dpe_addmuluz	342913
dpe_addz	1943128
dpe_cmp	5263345
dpe_cmpmul	5263337
dpe_divz	14075936
dpe_muluz	799874
dpe_mulz	56963626
dpe_negz	244376
dpe_normalize	48108427
dpe_normalize0	108562331
dpe_submuluz	412412
dpe_submulz	51700416
dpe_subz	53731566
dperotate	652350
dpetor	93802
drop	1347046
flat	1347046
flattergram_i	2967
fplll	0
fplll_dpe	1603456
fplll_fast	2103781
fplll_flatter	625771
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098810
gramschmidt_dynprec	2694089
gramschmidt_upper	1336
gsisinv	5195319
incrementalGSgen	168
itodbl_exp	162337126
kerint	42
kerint0	70
lll	1243329
lll_finish	2164403
lll_trivial	771702
lllall	36699
lllallgen	168
lllfp	5371190
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096022
mulshift	317717
nbits2prec64	7492388
pari_rint	10767171
potential	1347044
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31863825
rotateG	443224
rotateG_fast	11513205
setG2_fast	16980817
setG2_heuristic	187610
setG_fast	22608681
setG_heuristic	205626
set_line	24879303
sizered	1347046
spread	5852475
submuliu2n	4181071
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923313
submulzu2n	262549
subzi	18524920
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11956509
vectail_inplace	2090273

Generated by: LCOV version 1.16