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 30634-7c77b4d1a9) Lines: 1336 1642 81.4 % Date: 2026-01-26 09:23:16 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655151
Babai_fast	30145368
Babai_heuristic	288770
GS_extraprec	4727576
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848476
ZM_flatter	626830
ZM_flatter_rank	624816
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606440
ZM_is_lower	1205106
ZM_is_upper	4236378
ZM_lll_norms	7137651
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4086897
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580738
addmulzu2n	271563
addzi	17783071
affdbldpe	3206946
affdpe	25731609
affidpe	20752783
affii_or_copy_gc	1390398
cget_dblmat	8415890
cget_dblvec	34986820
cget_dpemat	3206953
cget_dpevec	13296420
condition_bound	4727576
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118046653
dbldotsquare	2481273
dblrotate	34549347
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14517095
dpe_abssmall	1390418
dpe_addmuluz	342913
dpe_addz	1943124
dpe_cmp	5263471
dpe_cmpmul	5263462
dpe_divz	14076643
dpe_muluz	799873
dpe_mulz	56967373
dpe_negz	244391
dpe_normalize	48111970
dpe_normalize0	108570022
dpe_submuluz	412409
dpe_submulz	51704055
dpe_subz	53735129
dperotate	652350
dpetor	93802
drop	1347061
flat	1347062
flattergram_i	2967
fplll	0
fplll_dpe	1603475
fplll_fast	2103976
fplll_flatter	625777
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44537
get_gramschmidt	1098830
gramschmidt_dynprec	2694124
gramschmidt_upper	1336
gsisinv	5195339
incrementalGSgen	168
itodbl_exp	162348578
kerint	42
kerint0	70
lll	1243329
lll_finish	2164574
lll_trivial	771704
lllall	36699
lllallgen	168
lllfp	5371238
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096659
mulshift	317717
nbits2prec64	7492491
pari_rint	10769279
potential	1347062
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31873728
rotateG	443224
rotateG_fast	11516483
setG2_fast	16986061
setG2_heuristic	187610
setG_fast	22614996
setG_heuristic	205626
set_line	24885270
sizered	1347062
spread	5852674
submuliu2n	4177824
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923204
submulzu2n	262549
subzi	18524603
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959852
vectail_inplace	2090448

Generated by: LCOV version 1.16