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 30809-023acc7158) Lines: 1336 1642 81.4 % Date: 2026-04-13 09:26:12 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656273
Babai_fast	30146139
Babai_heuristic	289747
GS_extraprec	4727096
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4847865
ZM_flatter	626844
ZM_flatter_rank	624830
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606605
ZM_is_lower	1205481
ZM_is_upper	4236582
ZM_lll_norms	7137744
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4088189
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580765
addmulzu2n	271563
addzi	17783206
affdbldpe	3207792
affdpe	25733303
affidpe	20756699
affii_or_copy_gc	1390421
cget_dblmat	8418611
cget_dblvec	34999101
cget_dpemat	3207791
cget_dpevec	13300745
condition_bound	4727097
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118035861
dbldotsquare	2482348
dblrotate	34551849
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519158
dpe_abssmall	1390432
dpe_addmuluz	342907
dpe_addz	1943114
dpe_cmp	5264573
dpe_cmpmul	5264570
dpe_divz	14078689
dpe_muluz	799876
dpe_mulz	56969165
dpe_negz	244394
dpe_normalize	48113835
dpe_normalize0	108576191
dpe_submuluz	412418
dpe_submulz	51704769
dpe_subz	53735839
dperotate	652348
dpetor	93772
drop	1346953
flat	1346953
flattergram_i	2967
fplll	0
fplll_dpe	1603897
fplll_fast	2104656
fplll_flatter	625791
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44539
get_gramschmidt	1099262
gramschmidt_dynprec	2693905
gramschmidt_upper	1336
gsisinv	5195279
incrementalGSgen	168
itodbl_exp	162331567
kerint	28
kerint0	56
lll	1243425
lll_finish	2165261
lll_trivial	771770
lllall	36699
lllallgen	168
lllfp	5371064
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096532
mulshift	317611
nbits2prec64	7492183
pari_rint	10768891
potential	1346954
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31878446
rotateG	443654
rotateG_fast	11517296
setG2_fast	16986761
setG2_heuristic	188352
setG_fast	22617692
setG_heuristic	206374
set_line	24889250
sizered	1346955
spread	5852779
submuliu2n	4174641
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499795
submulziu	5923381
submulzu2n	262549
subzi	18524865
truncexpo	12139
u64toi	19876486
u64toineg	668118
update_alpha	11961041
vectail_inplace	2091099

Generated by: LCOV version 1.16