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 30862-ea47bd413c) Lines: 1336 1642 81.4 % Date: 2026-05-06 09:26:47 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656452
Babai_fast	30148243
Babai_heuristic	289747
GS_extraprec	4727395
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4850842
ZM_flatter	626862
ZM_flatter_rank	624848
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606684
ZM_is_lower	1205489
ZM_is_upper	4236948
ZM_lll_norms	7140967
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4084943
addmuliu642n	668118
addmuliu64_inplace	9567362
addmulziu	4580713
addmulzu2n	271563
addzi	17782990
affdbldpe	3208096
affdpe	25733497
affidpe	20757333
affii_or_copy_gc	1390412
cget_dblmat	8419520
cget_dblvec	35003207
cget_dpemat	3208095
cget_dpevec	13301671
condition_bound	4727395
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118039510
dbldotsquare	2482627
dblrotate	34554688
do_SWAPgen	196
dpeM_diagonal_shallow	1547
dpe_abscmp	14519408
dpe_abssmall	1390427
dpe_addmuluz	342907
dpe_addz	1943123
dpe_cmp	5264715
dpe_cmpmul	5264710
dpe_divz	14078925
dpe_muluz	799875
dpe_mulz	56969959
dpe_negz	244383
dpe_normalize	48114926
dpe_normalize0	108578327
dpe_submuluz	412418
dpe_submulz	51705437
dpe_subz	53736520
dperotate	652346
dpetor	23604
drop	1347063
flat	1347063
flattergram_i	2967
fplll	0
fplll_dpe	1604050
fplll_fast	2104880
fplll_flatter	625809
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44539
get_gramschmidt	1099272
gramschmidt_dynprec	2694123
gramschmidt_upper	1336
gsisinv	5195564
incrementalGSgen	168
itodbl_exp	162328574
kerint	28
kerint0	56
lll	1244992
lll_finish	2165484
lll_trivial	771792
lllall	36699
lllallgen	168
lllfp	5372967
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097105
mulshift	317611
nbits2prec64	7492694
pari_rint	10769777
potential	1347062
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31880815
rotateG	443653
rotateG_fast	11518240
setG2_fast	16988061
setG2_heuristic	188352
setG_fast	22619574
setG_heuristic	206374
set_line	24891388
sizered	1347063
spread	5853142
submuliu2n	4169924
submuliu642n	683445
submuliu64_inplace	9625873
submulshift	1499795
submulziu	5923324
submulzu2n	262549
subzi	18524760
truncexpo	12139
u64toi	19876680
u64toineg	668118
update_alpha	11961998
vectail_inplace	2091315

Generated by: LCOV version 1.16