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 30818-1d7bcd2a3c) Lines: 1336 1642 81.4 % Date: 2026-04-16 09:26:05 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	244374
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342902
absrsmall2	401466
dpe_submuluz	412418
rotateG	443224
ZM_is_knapsack	606638
ZM_flatter_rank	624839
fplll_flatter	625800
ZM_flatter	626853
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771771
dpe_muluz	799867
get_gramschmidt	1099255
realdotproduct	1183370
ZM_is_lower	1205473
lll	1243425
drop	1347009
potential	1347009
flat	1347011
sizered	1347011
affii_or_copy_gc	1390409
dpe_abssmall	1390420
submulshift	1499787
fplll_dpe	1603882
dpe_addz	1943116
vectail_inplace	2091116
fplll_fast	2104672
lll_finish	2165277
dbldotsquare	2482554
gramschmidt_dynprec	2694019
affdbldpe	3207762
cget_dpemat	3207776
addmuliu2n	4087695
mpabscmp	4096754
submuliu2n	4173958
ZM_is_upper	4236689
addmulziu	4580647
Babai_dpe	4656238
GS_extraprec	4727254
condition_bound	4727254
ZM2_lll_norms	4848047
gsisinv	5195417
dpe_cmp	5264537
dpe_cmpmul	5264537
lllfp	5371231
spread	5852949
submulziu	5923283
ZM_lll_norms	7137957
nbits2prec64	7492410
cget_dblmat	8418666
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10769404
rotateG_fast	11517877
update_alpha	11961199
cget_dpevec	13301012
dpe_divz	14078539
dpe_abscmp	14519035
setG2_fast	16987534
addzi	17782799
subzi	18524497
u64toi	19876486
affidpe	20756720
setG_fast	22618508
set_line	24890240
affdpe	25733004
Babai_fast	30147764
rotate	31878074
dblrotate	34553491
cget_dblvec	35000267
dpe_normalize	48113564
dpe_submulz	51704334
dpe_subz	53735345
dpe_mulz	56968657
dpe_normalize0	108575272
dbldotproduct	118040147
itodbl_exp	162322690

Generated by: LCOV version 1.16