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 30610-dfc8ed42cd) Lines: 1336 1642 81.4 % Date: 2026-01-14 09:22:13 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	4246
fplll_heuristic	4246
gc_lll	4835
lllgram	9089
truncexpo	12139
ZC_to_RC	15952
dpeM_diagonal_shallow	20146
RgM_flip	34918
lllgramint	36439
lllall	36699
get_gaussred	44539
RgM_is_square_mat	45828
dpetor	93800
setG2_heuristic	188352
realsqrdotproduct	198160
setG_heuristic	206374
dpe_negz	244385
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	289747
mulshift	317718
dpe_addmuluz	342910
absrsmall2	402705
dpe_submuluz	412411
rotateG	443654
ZM_is_knapsack	606193
ZM_flatter_rank	624830
fplll_flatter	625791
ZM_flatter	626844
dperotate	652348
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	698128
lll_trivial	771700
dpe_muluz	799871
get_gramschmidt	1098834
realdotproduct	1186355
ZM_is_lower	1205108
lll	1243328
drop	1347124
flat	1347125
potential	1347125
sizered	1347126
affii_or_copy_gc	1390384
dpe_abssmall	1390420
submulshift	1501331
fplll_dpe	1603473
dpe_addz	1943117
vectail_inplace	2090199
fplll_fast	2103720
lll_finish	2164326
dbldotsquare	2481141
gramschmidt_dynprec	2694248
cget_dpemat	3206920
affdbldpe	3206942
addmuliu2n	4088326
mpabscmp	4096155
submuliu2n	4180788
ZM_is_upper	4236499
addmulziu	4580772
Babai_dpe	4655051
condition_bound	4727815
GS_extraprec	4727816
ZM2_lll_norms	4848913
gsisinv	5195574
dpe_cmpmul	5263377
dpe_cmp	5263386
lllfp	5371428
spread	5852666
submulziu	5923291
ZM_lll_norms	7137855
nbits2prec64	7492799
cget_dblmat	8414873
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10766911
rotateG_fast	11512985
update_alpha	11956734
cget_dpevec	13296453
dpe_divz	14075994
dpe_abscmp	14516438
setG2_fast	16980332
addzi	17783161
subzi	18524661
u64toi	19880176
affidpe	20752174
setG_fast	22607927
set_line	24878481
affdpe	25730932
Babai_fast	30135671
rotate	31865374
dblrotate	34538933
cget_dblvec	34980186
dpe_normalize	48108277
dpe_submulz	51700386
dpe_subz	53731468
dpe_mulz	56963587
dpe_normalize0	108562036
dbldotproduct	118008666
itodbl_exp	162307692

Generated by: LCOV version 1.16