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 30786-ffec283a2b) Lines: 1336 1642 81.4 % Date: 2026-04-08 09:25:27 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656240
Babai_fast	30145210
Babai_heuristic	288770
GS_extraprec	4727105
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848007
ZM_flatter	626849
ZM_flatter_rank	624835
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606548
ZM_is_lower	1205479
ZM_is_upper	4236596
ZM_lll_norms	7137831
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4086016
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580753
addmulzu2n	271563
addzi	17783203
affdbldpe	3207775
affdpe	25733346
affidpe	20756683
affii_or_copy_gc	1390405
cget_dblmat	8418337
cget_dblvec	34998198
cget_dpemat	3207770
cget_dpevec	13300733
condition_bound	4727107
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118023293
dbldotsquare	2482328
dblrotate	34550423
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519122
dpe_abssmall	1390427
dpe_addmuluz	342907
dpe_addz	1943118
dpe_cmp	5264571
dpe_cmpmul	5264565
dpe_divz	14078640
dpe_muluz	799874
dpe_mulz	56969195
dpe_negz	244403
dpe_normalize	48113732
dpe_normalize0	108575962
dpe_submuluz	412416
dpe_submulz	51704760
dpe_subz	53735858
dperotate	652350
dpetor	93773
drop	1346961
flat	1346964
flattergram_i	2967
fplll	0
fplll_dpe	1603887
fplll_fast	2104589
fplll_flatter	625796
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1099263
gramschmidt_dynprec	2693927
gramschmidt_upper	1336
gsisinv	5195277
incrementalGSgen	168
itodbl_exp	162242965
kerint	28
kerint0	56
lll	1243425
lll_finish	2165207
lll_trivial	771770
lllall	36699
lllallgen	168
lllfp	5371087
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096482
mulshift	317610
nbits2prec64	7492244
pari_rint	10768625
potential	1346963
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31875257
rotateG	443224
rotateG_fast	11516870
setG2_fast	16985937
setG2_heuristic	187610
setG_fast	22616058
setG_heuristic	205626
set_line	24887058
sizered	1346964
spread	5852728
submuliu2n	4172607
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923351
submulzu2n	262549
subzi	18524915
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11960285
vectail_inplace	2091042

Generated by: LCOV version 1.16