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 30734-f1f26dedcb) Lines: 1336 1642 81.4 % Date: 2026-03-04 09:24:31 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656315
Babai_fast	30146595
Babai_heuristic	288770
GS_extraprec	4727337
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848249
ZM_flatter	626857
ZM_flatter_rank	624843
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606470
ZM_is_lower	1205508
ZM_is_upper	4236795
ZM_lll_norms	7138062
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4086076
addmuliu642n	668118
addmuliu64_inplace	9567325
addmulziu	4580746
addmulzu2n	271563
addzi	17783509
affdbldpe	3207843
affdpe	25733663
affidpe	20757020
affii_or_copy_gc	1390424
cget_dblmat	8418191
cget_dblvec	34998354
cget_dpemat	3207845
cget_dpevec	13301061
condition_bound	4727337
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118037890
dbldotsquare	2482349
dblrotate	34551389
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519155
dpe_abssmall	1390436
dpe_addmuluz	342907
dpe_addz	1943122
dpe_cmp	5264610
dpe_cmpmul	5264601
dpe_divz	14078725
dpe_muluz	799876
dpe_mulz	56969621
dpe_negz	244379
dpe_normalize	48113974
dpe_normalize0	108576529
dpe_submuluz	412418
dpe_submulz	51705125
dpe_subz	53736247
dperotate	652350
dpetor	93774
drop	1347045
flat	1347047
flattergram_i	2967
fplll	0
fplll_dpe	1603923
fplll_fast	2104550
fplll_flatter	625804
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099281
gramschmidt_dynprec	2694093
gramschmidt_upper	1336
gsisinv	5195526
incrementalGSgen	168
itodbl_exp	162356883
kerint	42
kerint0	70
lll	1243427
lll_finish	2165156
lll_trivial	771771
lllall	36699
lllallgen	168
lllfp	5371346
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096775
mulshift	317610
nbits2prec64	7492648
pari_rint	10768338
potential	1347045
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31875853
rotateG	443224
rotateG_fast	11517151
setG2_fast	16986565
setG2_heuristic	187610
setG_fast	22617470
setG_heuristic	205626
set_line	24889386
sizered	1347047
spread	5852899
submuliu2n	4171082
submuliu642n	683445
submuliu64_inplace	9625851
submulshift	1499787
submulziu	5923407
submulzu2n	262549
subzi	18525067
truncexpo	12138
u64toi	19876621
u64toineg	668118
update_alpha	11960442
vectail_inplace	2090977

Generated by: LCOV version 1.16