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: 2026-03-31 09:27:24 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	93773
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244392
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317610
dpe_addmuluz	342907
absrsmall2	401466
dpe_submuluz	412417
rotateG	443224
ZM_is_knapsack	606517
ZM_flatter_rank	624819
fplll_flatter	625780
ZM_flatter	626834
dperotate	652350
addmuliu642n	668118
u64toineg	668118
submuliu642n	683445
absrsmall	696466
lll_trivial	771772
dpe_muluz	799875
get_gramschmidt	1099241
realdotproduct	1183370
ZM_is_lower	1205456
lll	1243425
drop	1346907
flat	1346908
potential	1346908
sizered	1346908
affii_or_copy_gc	1390419
dpe_abssmall	1390433
submulshift	1499787
fplll_dpe	1603870
dpe_addz	1943123
vectail_inplace	2090977
fplll_fast	2104537
lll_finish	2165142
dbldotsquare	2482456
gramschmidt_dynprec	2693814
cget_dpemat	3207728
affdbldpe	3207736
addmuliu2n	4085426
mpabscmp	4096073
submuliu2n	4172238
ZM_is_upper	4236455
addmulziu	4580735
Babai_dpe	4656151
condition_bound	4726936
GS_extraprec	4726937
ZM2_lll_norms	4847826
gsisinv	5195106
dpe_cmpmul	5264442
dpe_cmp	5264445
lllfp	5370916
spread	5852524
submulziu	5923408
ZM_lll_norms	7137540
nbits2prec64	7491943
cget_dblmat	8418138
addmuliu64_inplace	9567280
submuliu64_inplace	9625761
pari_rint	10768593
rotateG_fast	11515650
update_alpha	11958986
cget_dpevec	13300831
dpe_divz	14078104
dpe_abscmp	14518534
setG2_fast	16984037
addzi	17783212
subzi	18524917
u64toi	19876486
affidpe	20756250
setG_fast	22614440
set_line	24885429
affdpe	25732795
Babai_fast	30141872
rotate	31871412
dblrotate	34546917
cget_dblvec	34996591
dpe_normalize	48110957
dpe_submulz	51701951
dpe_subz	53733104
dpe_mulz	56966288
dpe_normalize0	108570008
dbldotproduct	118015546
itodbl_exp	162300418

Generated by: LCOV version 1.16