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 30660-09c6d0ed2e) Lines: 1336 1642 81.4 % Date: 2026-02-03 09:23:21 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
matkerint0	28
lllgramkerim	35
lllkerim	35
kerint	42
lllgen	42
lllgramgen	42
lllgramkerimgen	42
lllkerimgen	42
qflllgram	63
kerint0	70
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	20147
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44538
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244395
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412411
rotateG	443224
ZM_is_knapsack	606444
ZM_flatter_rank	624856
fplll_flatter	625816
ZM_flatter	626870
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771704
dpe_muluz	799873
get_gramschmidt	1098854
realdotproduct	1183370
ZM_is_lower	1205136
lll	1243328
drop	1347249
flat	1347249
potential	1347250
sizered	1347250
affii_or_copy_gc	1390406
dpe_abssmall	1390425
submulshift	1501323
fplll_dpe	1603511
dpe_addz	1943128
vectail_inplace	2090492
fplll_fast	2104006
lll_finish	2164620
dbldotsquare	2481345
gramschmidt_dynprec	2694498
cget_dpemat	3207010
affdbldpe	3207013
addmuliu2n	4089439
mpabscmp	4097083
submuliu2n	4181644
ZM_is_upper	4236785
addmulziu	4580810
Babai_dpe	4655250
GS_extraprec	4728130
condition_bound	4728130
ZM2_lll_norms	4849076
gsisinv	5195899
dpe_cmpmul	5263580
dpe_cmp	5263586
lllfp	5371798
spread	5853236
submulziu	5923315
ZM_lll_norms	7138303
nbits2prec64	7493423
cget_dblmat	8415998
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10769158
rotateG_fast	11516369
update_alpha	11959702
cget_dpevec	13296785
dpe_divz	14076897
dpe_abscmp	14517275
setG2_fast	16985768
addzi	17783376
subzi	18524870
u64toi	19880176
affidpe	20753224
setG_fast	22614622
set_line	24885049
affdpe	25731905
Babai_fast	30144754
rotate	31873369
dblrotate	34549044
cget_dblvec	34986610
dpe_normalize	48112303
dpe_submulz	51704411
dpe_subz	53735534
dpe_mulz	56967882
dpe_normalize0	108571144
dbldotproduct	118045325
itodbl_exp	162363568

Generated by: LCOV version 1.16