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 30766-abc2a9856c) Lines: 1336 1642 81.4 % Date: 2026-03-27 09:27:04 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656266
Babai_fast	30145422
Babai_heuristic	288770
GS_extraprec	4727201
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847915
ZM_flatter	626846
ZM_flatter_rank	624832
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606704
ZM_is_lower	1205478
ZM_is_upper	4236658
ZM_lll_norms	7137909
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4083751
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580764
addmulzu2n	271563
addzi	17783709
affdbldpe	3207778
affdpe	25733435
affidpe	20756903
affii_or_copy_gc	1390427
cget_dblmat	8418961
cget_dblvec	35001163
cget_dpemat	3207782
cget_dpevec	13301094
condition_bound	4727201
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118027050
dbldotsquare	2482631
dblrotate	34551139
do_SWAPgen	196
dpeM_diagonal_shallow	20139
dpe_abscmp	14518951
dpe_abssmall	1390437
dpe_addmuluz	342905
dpe_addz	1943121
dpe_cmp	5264567
dpe_cmpmul	5264563
dpe_divz	14078564
dpe_muluz	799874
dpe_mulz	56968269
dpe_negz	244409
dpe_normalize	48112610
dpe_normalize0	108573952
dpe_submuluz	412418
dpe_submulz	51703782
dpe_subz	53734920
dperotate	652350
dpetor	93772
drop	1347000
flat	1346999
flattergram_i	2967
fplll	0
fplll_dpe	1603891
fplll_fast	2104744
fplll_flatter	625793
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099260
gramschmidt_dynprec	2693999
gramschmidt_upper	1336
gsisinv	5195379
incrementalGSgen	168
itodbl_exp	162324848
kerint	28
kerint0	56
lll	1243426
lll_finish	2165358
lll_trivial	771773
lllall	36699
lllallgen	168
lllfp	5371200
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096730
mulshift	317610
nbits2prec64	7492418
pari_rint	10770139
potential	1347000
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31875610
rotateG	443224
rotateG_fast	11517053
setG2_fast	16986425
setG2_heuristic	187610
setG_fast	22617586
setG_heuristic	205626
set_line	24889701
sizered	1347000
spread	5852984
submuliu2n	4169475
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923416
submulzu2n	262549
subzi	18525332
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11960390
vectail_inplace	2091195

Generated by: LCOV version 1.16