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 30764-6b81f1f3fa) Lines: 1336 1642 81.4 % Date: 2026-03-25 09:26:52 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
kerint	28
matkerint0	28
lllgramkerim	35
lllkerim	35
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
kerint0	56
qflllgram	63
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	20140
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93774
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244399
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606786
ZM_flatter_rank	624857
fplll_flatter	625818
ZM_flatter	626871
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771774
dpe_muluz	799876
get_gramschmidt	1099277
realdotproduct	1183370
ZM_is_lower	1205493
lll	1243425
potential	1347094
drop	1347095
sizered	1347096
flat	1347097
affii_or_copy_gc	1390416
dpe_abssmall	1390428
submulshift	1499787
fplll_dpe	1603910
dpe_addz	1943123
vectail_inplace	2091295
fplll_fast	2104846
lll_finish	2165457
dbldotsquare	2482689
gramschmidt_dynprec	2694194
cget_dpemat	3207809
affdbldpe	3207816
addmuliu2n	4085167
mpabscmp	4097338
submuliu2n	4170341
ZM_is_upper	4236881
addmulziu	4580757
Babai_dpe	4656389
GS_extraprec	4727517
condition_bound	4727517
ZM2_lll_norms	4848158
gsisinv	5195676
dpe_cmpmul	5264669
dpe_cmp	5264670
lllfp	5371492
spread	5853366
submulziu	5923343
ZM_lll_norms	7138233
nbits2prec64	7492823
cget_dblmat	8419363
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10770412
rotateG_fast	11518983
update_alpha	11962322
cget_dpevec	13301255
dpe_divz	14079164
dpe_abscmp	14519537
setG2_fast	16989335
addzi	17783511
subzi	18525216
u64toi	19876486
affidpe	20757580
setG_fast	22621186
set_line	24893265
affdpe	25733950
Babai_fast	30150785
rotate	31881393
dblrotate	34556903
cget_dblvec	35004165
dpe_normalize	48115601
dpe_submulz	51706681
dpe_subz	53737797
dpe_mulz	56971270
dpe_normalize0	108580638
dbldotproduct	118049131
itodbl_exp	162355443

Generated by: LCOV version 1.16