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 30571-c0dfe82732) Lines: 1336 1642 81.4 % Date: 2025-12-08 09:22:00 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656329
Babai_fast	30207990
Babai_heuristic	288770
GS_extraprec	4728315
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848064
ZM_flatter	626950
ZM_flatter_rank	624936
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606733
ZM_is_lower	1205218
ZM_is_upper	4237340
ZM_lll_norms	7138095
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4104429
addmuliu642n	671548
addmuliu64_inplace	9582880
addmulziu	4580853
addmulzu2n	271563
addzi	17783848
affdbldpe	3207778
affdpe	25735803
affidpe	20757074
affii_or_copy_gc	1390589
cget_dblmat	8418752
cget_dblvec	34997192
cget_dpemat	3207781
cget_dpevec	13299540
condition_bound	4728315
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118244496
dbldotsquare	2481826
dblrotate	34646048
do_SWAPgen	196
dpeM_diagonal_shallow	20294
dpe_abscmp	14519988
dpe_abssmall	1390604
dpe_addmuluz	342913
dpe_addz	1943185
dpe_cmp	5264503
dpe_cmpmul	5264500
dpe_divz	14079504
dpe_muluz	799918
dpe_mulz	56974205
dpe_negz	244418
dpe_normalize	48117488
dpe_normalize0	108583666
dpe_submuluz	412454
dpe_submulz	51709879
dpe_subz	53741047
dperotate	652462
dpetor	94285
drop	1347385
flat	1347384
flattergram_i	2967
fplll	0
fplll_dpe	1603890
fplll_fast	2104694
fplll_flatter	625897
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44558
get_gramschmidt	1099053
gramschmidt_dynprec	2694769
gramschmidt_upper	1336
gsisinv	5196184
incrementalGSgen	168
itodbl_exp	162604697
kerint	42
kerint0	70
lll	1243391
lll_finish	2165392
lll_trivial	771753
lllall	36699
lllallgen	168
lllfp	5372395
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097855
mulshift	318942
nbits2prec64	7494127
pari_rint	10798333
potential	1347385
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31938405
rotateG	443280
rotateG_fast	11548708
setG2_fast	17031583
setG2_heuristic	187610
setG_fast	22663000
setG_heuristic	205626
set_line	24934261
sizered	1347385
spread	5853833
submuliu2n	4196892
submuliu642n	687471
submuliu64_inplace	9633716
submulshift	1507243
submulziu	5923696
submulzu2n	262549
subzi	18525396
truncexpo	12138
u64toi	19904067
u64toineg	671548
update_alpha	11992201
vectail_inplace	2091137

Generated by: LCOV version 1.16