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: 2026-03-26 09:27:02 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	244405
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342906
absrsmall2	401466
dpe_submuluz	412417
rotateG	443224
ZM_is_knapsack	606615
ZM_flatter_rank	624833
fplll_flatter	625794
ZM_flatter	626847
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771774
dpe_muluz	799874
get_gramschmidt	1099265
realdotproduct	1183370
ZM_is_lower	1205480
lll	1243427
flat	1346990
drop	1346991
potential	1346991
sizered	1346991
affii_or_copy_gc	1390417
dpe_abssmall	1390428
submulshift	1499787
fplll_dpe	1603895
dpe_addz	1943122
vectail_inplace	2091113
fplll_fast	2104669
lll_finish	2165277
dbldotsquare	2482400
gramschmidt_dynprec	2693981
affdbldpe	3207788
cget_dpemat	3207789
addmuliu2n	4085960
mpabscmp	4096792
submuliu2n	4170841
ZM_is_upper	4236645
addmulziu	4580726
Babai_dpe	4656314
GS_extraprec	4727186
condition_bound	4727186
ZM2_lll_norms	4847935
gsisinv	5195366
dpe_cmpmul	5264588
dpe_cmp	5264589
lllfp	5371171
spread	5852883
submulziu	5923350
ZM_lll_norms	7137848
nbits2prec64	7492390
cget_dblmat	8418667
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769205
rotateG_fast	11517734
update_alpha	11961039
cget_dpevec	13300840
dpe_divz	14078867
dpe_abscmp	14519233
setG2_fast	16987634
addzi	17783538
subzi	18525153
u64toi	19876486
affidpe	20757099
setG_fast	22618891
set_line	24891058
affdpe	25733695
Babai_fast	30147694
rotate	31877640
dblrotate	34553231
cget_dblvec	35000438
dpe_normalize	48114646
dpe_submulz	51705746
dpe_subz	53736893
dpe_mulz	56970260
dpe_normalize0	108578335
dbldotproduct	118042309
itodbl_exp	162369645

Generated by: LCOV version 1.16