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 30792-987d9c52f6) Lines: 1336 1642 81.4 % Date: 2026-04-09 09:26:26 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	20139
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
dpetor	93772
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	412417
rotateG	443224
ZM_is_knapsack	606616
ZM_flatter_rank	624833
fplll_flatter	625794
ZM_flatter	626847
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771772
dpe_muluz	799872
get_gramschmidt	1099258
realdotproduct	1183370
ZM_is_lower	1205479
lll	1243426
drop	1346964
potential	1346964
flat	1346965
sizered	1346965
affii_or_copy_gc	1390412
dpe_abssmall	1390424
submulshift	1499787
fplll_dpe	1603892
dpe_addz	1943116
vectail_inplace	2091104
fplll_fast	2104660
lll_finish	2165266
dbldotsquare	2482423
gramschmidt_dynprec	2693927
affdbldpe	3207782
cget_dpemat	3207784
addmuliu2n	4087714
mpabscmp	4096579
submuliu2n	4174225
ZM_is_upper	4236601
addmulziu	4580731
Babai_dpe	4656268
GS_extraprec	4727128
condition_bound	4727128
ZM2_lll_norms	4847868
gsisinv	5195294
dpe_cmpmul	5264570
dpe_cmp	5264573
lllfp	5371093
spread	5852820
submulziu	5923280
ZM_lll_norms	7137768
nbits2prec64	7492225
cget_dblmat	8418637
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769461
rotateG_fast	11517906
update_alpha	11961225
cget_dpevec	13300912
dpe_divz	14078750
dpe_abscmp	14519191
setG2_fast	16987740
addzi	17783120
subzi	18524756
u64toi	19876486
affidpe	20756880
setG_fast	22618775
set_line	24890341
affdpe	25733410
Babai_fast	30148011
rotate	31878123
dblrotate	34553643
cget_dblvec	34999611
dpe_normalize	48114035
dpe_submulz	51705020
dpe_subz	53736162
dpe_mulz	56969477
dpe_normalize0	108576766
dbldotproduct	118042817
itodbl_exp	162349948

Generated by: LCOV version 1.16