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 30672-116f3d5b0e) Lines: 1336 1642 81.4 % Date: 2026-02-06 09:23:51 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	44537
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244374
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412411
rotateG	443223
ZM_is_knapsack	606279
ZM_flatter_rank	624818
fplll_flatter	625779
ZM_flatter	626832
dperotate	652349
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771699
dpe_muluz	799875
get_gramschmidt	1098829
realdotproduct	1183370
ZM_is_lower	1205100
lll	1243320
flat	1347037
drop	1347038
sizered	1347038
potential	1347039
affii_or_copy_gc	1390405
dpe_abssmall	1390423
submulshift	1501323
fplll_dpe	1603475
dpe_addz	1943120
vectail_inplace	2090284
fplll_fast	2103805
lll_finish	2164414
dbldotsquare	2481219
gramschmidt_dynprec	2694075
cget_dpemat	3206944
affdbldpe	3206947
addmuliu2n	4088704
mpabscmp	4096024
submuliu2n	4181662
ZM_is_upper	4236327
addmulziu	4580812
Babai_dpe	4655062
GS_extraprec	4727578
condition_bound	4727578
ZM2_lll_norms	4848564
gsisinv	5195333
dpe_cmpmul	5263383
dpe_cmp	5263388
lllfp	5371172
spread	5852517
submulziu	5923295
ZM_lll_norms	7137620
nbits2prec64	7492403
cget_dblmat	8415212
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10767808
rotateG_fast	11513724
update_alpha	11956996
cget_dpevec	13296488
dpe_divz	14076072
dpe_abscmp	14516499
setG2_fast	16981543
addzi	17783223
subzi	18524800
u64toi	19880176
affidpe	20752246
setG_fast	22609563
set_line	24880536
affdpe	25730983
Babai_fast	30137847
rotate	31865336
dblrotate	34541082
cget_dblvec	34981824
dpe_normalize	48108756
dpe_submulz	51700793
dpe_subz	53731911
dpe_mulz	56964016
dpe_normalize0	108563111
dbldotproduct	118019433
itodbl_exp	162356680

Generated by: LCOV version 1.16