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 30617-dd5c93fb0e) Lines: 1336 1642 81.4 % Date: 2026-01-21 09:23:33 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	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244421
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412412
rotateG	443224
ZM_is_knapsack	606298
ZM_flatter_rank	624843
fplll_flatter	625804
ZM_flatter	626857
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771698
dpe_muluz	799872
get_gramschmidt	1098850
realdotproduct	1183370
ZM_is_lower	1205122
lll	1243329
drop	1347133
flat	1347134
potential	1347134
sizered	1347134
affii_or_copy_gc	1390415
dpe_abssmall	1390428
submulshift	1501323
fplll_dpe	1603491
dpe_addz	1943127
vectail_inplace	2090332
fplll_fast	2103842
lll_finish	2164461
dbldotsquare	2481195
gramschmidt_dynprec	2694265
affdbldpe	3206982
cget_dpemat	3206988
addmuliu2n	4086761
mpabscmp	4096328
submuliu2n	4179917
ZM_is_upper	4236538
addmulziu	4580802
Babai_dpe	4655109
GS_extraprec	4727762
condition_bound	4727762
ZM2_lll_norms	4848848
gsisinv	5195507
dpe_cmpmul	5263452
dpe_cmp	5263455
lllfp	5371453
spread	5852714
submulziu	5923252
ZM_lll_norms	7137901
nbits2prec64	7492829
cget_dblmat	8415353
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10767256
rotateG_fast	11513307
update_alpha	11956643
cget_dpevec	13296529
dpe_divz	14076168
dpe_abscmp	14516617
setG2_fast	16980783
addzi	17783139
subzi	18524707
u64toi	19880176
affidpe	20752332
setG_fast	22608448
set_line	24878950
affdpe	25731117
Babai_fast	30136532
rotate	31864196
dblrotate	34539785
cget_dblvec	34982267
dpe_normalize	48108668
dpe_submulz	51700703
dpe_subz	53731793
dpe_mulz	56964023
dpe_normalize0	108562909
dbldotproduct	118009151
itodbl_exp	162284845

Generated by: LCOV version 1.16