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 30617-dd5c93fb0e) Lines: 1336 1642 81.4 % Date: 2026-01-20 09:21:06 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655043
Babai_fast	30136301
Babai_heuristic	288770
GS_extraprec	4727588
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848719
ZM_flatter	626831
ZM_flatter_rank	624817
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606249
ZM_is_lower	1205098
ZM_is_upper	4236355
ZM_lll_norms	7137698
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087552
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580654
addmulzu2n	271563
addzi	17782682
affdbldpe	3206929
affdpe	25730684
affidpe	20752048
affii_or_copy_gc	1390394
cget_dblmat	8415063
cget_dblvec	34980998
cget_dpemat	3206932
cget_dpevec	13296364
condition_bound	4727588
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118011277
dbldotsquare	2481167
dblrotate	34539748
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516398
dpe_abssmall	1390409
dpe_addmuluz	342909
dpe_addz	1943122
dpe_cmp	5263387
dpe_cmpmul	5263384
dpe_divz	14075897
dpe_muluz	799870
dpe_mulz	56963498
dpe_negz	244376
dpe_normalize	48108316
dpe_normalize0	108561903
dpe_submuluz	412410
dpe_submulz	51700232
dpe_subz	53731313
dperotate	652350
dpetor	93802
drop	1347057
flat	1347058
flattergram_i	2967
fplll	0
fplll_dpe	1603468
fplll_fast	2103770
fplll_flatter	625778
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1098820
gramschmidt_dynprec	2694115
gramschmidt_upper	1336
gsisinv	5195345
incrementalGSgen	168
itodbl_exp	162301606
kerint	42
kerint0	70
lll	1243328
lll_finish	2164380
lll_trivial	771699
lllall	36699
lllallgen	168
lllfp	5371228
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096033
mulshift	317717
nbits2prec64	7492470
pari_rint	10767209
potential	1347058
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31864123
rotateG	443224
rotateG_fast	11513256
setG2_fast	16980726
setG2_heuristic	187610
setG_fast	22608433
setG_heuristic	205626
set_line	24878750
sizered	1347058
spread	5852497
submuliu2n	4180229
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923181
submulzu2n	262549
subzi	18524396
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11956615
vectail_inplace	2090252

Generated by: LCOV version 1.16