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 30616-7aa4fb0184) Lines: 1336 1642 81.4 % Date: 2026-01-17 09:22:32 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	44539
RgM_is_square_mat	45828
dpetor	93802
setG2_heuristic	187610
realsqrdotproduct	197413
setG_heuristic	205626
dpe_negz	244382
submulzu2n	262549
addmulzu2n	271563
Babai_heuristic	288770
mulshift	317717
dpe_addmuluz	342913
absrsmall2	401466
dpe_submuluz	412409
rotateG	443224
ZM_is_knapsack	606320
ZM_flatter_rank	624820
fplll_flatter	625781
ZM_flatter	626834
dperotate	652350
addmuliu642n	668454
u64toineg	668454
submuliu642n	684645
absrsmall	696466
lll_trivial	771701
dpe_muluz	799871
get_gramschmidt	1098826
realdotproduct	1183370
ZM_is_lower	1205098
lll	1243329
drop	1347054
flat	1347055
potential	1347055
sizered	1347055
affii_or_copy_gc	1390397
dpe_abssmall	1390417
submulshift	1501323
fplll_dpe	1603470
dpe_addz	1943128
vectail_inplace	2090329
fplll_fast	2103850
lll_finish	2164458
dbldotsquare	2481169
gramschmidt_dynprec	2694108
cget_dpemat	3206929
affdbldpe	3206935
addmuliu2n	4084420
mpabscmp	4096253
submuliu2n	4176063
ZM_is_upper	4236353
addmulziu	4580692
Babai_dpe	4655045
GS_extraprec	4727528
condition_bound	4727528
ZM2_lll_norms	4848573
gsisinv	5195289
dpe_cmpmul	5263380
dpe_cmp	5263391
lllfp	5371221
spread	5852500
submulziu	5923200
ZM_lll_norms	7137643
nbits2prec64	7492463
cget_dblmat	8415380
addmuliu64_inplace	9572242
submuliu64_inplace	9623289
pari_rint	10768623
rotateG_fast	11514332
update_alpha	11957691
cget_dpevec	13296255
dpe_divz	14076085
dpe_abscmp	14516543
setG2_fast	16982434
addzi	17782768
subzi	18524421
u64toi	19880176
affidpe	20752133
setG_fast	22610274
set_line	24880558
affdpe	25730932
Babai_fast	30139268
rotate	31867301
dblrotate	34542855
cget_dblvec	34983024
dpe_normalize	48108984
dpe_submulz	51701007
dpe_subz	53732104
dpe_mulz	56964244
dpe_normalize0	108563293
dbldotproduct	118016015
itodbl_exp	162274171

Generated by: LCOV version 1.16