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 30773-2078653b96) Lines: 1336 1642 81.4 % Date: 2026-03-30 09:27:24 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656395
Babai_fast	30149927
Babai_heuristic	288770
GS_extraprec	4727460
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848178
ZM_flatter	626878
ZM_flatter_rank	624864
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606708
ZM_is_lower	1205507
ZM_is_upper	4236877
ZM_lll_norms	7138157
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4085005
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580691
addmulzu2n	271563
addzi	17783099
affdbldpe	3207839
affdpe	25733693
affidpe	20757401
affii_or_copy_gc	1390397
cget_dblmat	8419120
cget_dblvec	35003041
cget_dpemat	3207843
cget_dpevec	13301340
condition_bound	4727462
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118047111
dbldotsquare	2482601
dblrotate	34556118
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519505
dpe_abssmall	1390417
dpe_addmuluz	342907
dpe_addz	1943113
dpe_cmp	5264688
dpe_cmpmul	5264684
dpe_divz	14079038
dpe_muluz	799872
dpe_mulz	56970395
dpe_negz	244390
dpe_normalize	48115001
dpe_normalize0	108578979
dpe_submuluz	412415
dpe_submulz	51705869
dpe_subz	53736968
dperotate	652350
dpetor	93774
drop	1347089
flat	1347089
flattergram_i	2967
fplll	0
fplll_dpe	1603922
fplll_fast	2104781
fplll_flatter	625825
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1099292
gramschmidt_dynprec	2694177
gramschmidt_upper	1336
gsisinv	5195631
incrementalGSgen	168
itodbl_exp	162350900
kerint	28
kerint0	56
lll	1243427
lll_finish	2165395
lll_trivial	771768
lllall	36699
lllallgen	168
lllfp	5371465
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097220
mulshift	317610
nbits2prec64	7492842
pari_rint	10770389
potential	1347089
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31880658
rotateG	443224
rotateG_fast	11518738
setG2_fast	16988906
setG2_heuristic	187610
setG_fast	22620559
setG_heuristic	205626
set_line	24891809
sizered	1347089
spread	5853238
submuliu2n	4170037
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923323
submulzu2n	262549
subzi	18524736
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11962059
vectail_inplace	2091227

Generated by: LCOV version 1.16