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 30735-65f72320ad) Lines: 1336 1642 81.4 % Date: 2026-03-10 09:24:00 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656323
Babai_fast	30144723
Babai_heuristic	288770
GS_extraprec	4727309
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847975
ZM_flatter	626855
ZM_flatter_rank	624841
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606688
ZM_is_lower	1205504
ZM_is_upper	4236747
ZM_lll_norms	7137988
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4086374
addmuliu642n	668118
addmuliu64_inplace	9567325
addmulziu	4580746
addmulzu2n	271563
addzi	17783123
affdbldpe	3207827
affdpe	25733375
affidpe	20757129
affii_or_copy_gc	1390417
cget_dblmat	8419027
cget_dblvec	35001015
cget_dpemat	3207842
cget_dpevec	13301583
condition_bound	4727308
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118024923
dbldotsquare	2482791
dblrotate	34550089
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519011
dpe_abssmall	1390424
dpe_addmuluz	342907
dpe_addz	1943114
dpe_cmp	5264624
dpe_cmpmul	5264620
dpe_divz	14078588
dpe_muluz	799876
dpe_mulz	56967548
dpe_negz	244383
dpe_normalize	48112048
dpe_normalize0	108572640
dpe_submuluz	412418
dpe_submulz	51703080
dpe_subz	53734124
dperotate	652350
dpetor	93774
drop	1347027
flat	1347025
flattergram_i	2967
fplll	0
fplll_dpe	1603924
fplll_fast	2104753
fplll_flatter	625802
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099280
gramschmidt_dynprec	2694051
gramschmidt_upper	1336
gsisinv	5195496
incrementalGSgen	168
itodbl_exp	162325811
kerint	42
kerint0	70
lll	1243426
lll_finish	2165378
lll_trivial	771772
lllall	36699
lllallgen	168
lllfp	5371281
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096655
mulshift	317610
nbits2prec64	7492549
pari_rint	10769843
potential	1347027
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31874562
rotateG	443224
rotateG_fast	11516706
setG2_fast	16985622
setG2_heuristic	187610
setG_fast	22616720
setG_heuristic	205626
set_line	24888720
sizered	1347027
spread	5853080
submuliu2n	4173264
submuliu642n	683445
submuliu64_inplace	9625851
submulshift	1499787
submulziu	5923342
submulzu2n	262549
subzi	18524768
truncexpo	12138
u64toi	19876621
u64toineg	668118
update_alpha	11960051
vectail_inplace	2091200

Generated by: LCOV version 1.16