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 30666-e2f9826198) Lines: 1336 1642 81.4 % Date: 2026-02-04 09:22:32 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655143
Babai_fast	30142087
Babai_heuristic	288770
GS_extraprec	4727816
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848858
ZM_flatter	626849
ZM_flatter_rank	624835
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606345
ZM_is_lower	1205113
ZM_is_upper	4236530
ZM_lll_norms	7137991
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4089869
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580821
addmulzu2n	271563
addzi	17783575
affdbldpe	3206932
affdpe	25731542
affidpe	20752733
affii_or_copy_gc	1390419
cget_dblmat	8415527
cget_dblvec	34983913
cget_dpemat	3206969
cget_dpevec	13296384
condition_bound	4727816
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118037522
dbldotsquare	2481142
dblrotate	34545866
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516998
dpe_abssmall	1390430
dpe_addmuluz	342913
dpe_addz	1943128
dpe_cmp	5263487
dpe_cmpmul	5263482
dpe_divz	14076599
dpe_muluz	799875
dpe_mulz	56966930
dpe_negz	244388
dpe_normalize	48111508
dpe_normalize0	108569126
dpe_submuluz	412412
dpe_submulz	51703552
dpe_subz	53734687
dperotate	652350
dpetor	93802
drop	1347133
flat	1347131
flattergram_i	2967
fplll	0
fplll_dpe	1603486
fplll_fast	2103886
fplll_flatter	625796
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098841
gramschmidt_dynprec	2694264
gramschmidt_upper	1336
gsisinv	5195570
incrementalGSgen	168
itodbl_exp	162373004
kerint	42
kerint0	70
lll	1243328
lll_finish	2164501
lll_trivial	771703
lllall	36699
lllallgen	168
lllfp	5371454
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096602
mulshift	317717
nbits2prec64	7492797
pari_rint	10767609
potential	1347134
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31870158
rotateG	443224
rotateG_fast	11515301
setG2_fast	16983988
setG2_heuristic	187610
setG_fast	22612552
setG_heuristic	205626
set_line	24883521
sizered	1347134
spread	5852817
submuliu2n	4182265
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923299
submulzu2n	262549
subzi	18525055
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11958608
vectail_inplace	2090373

Generated by: LCOV version 1.16