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 30657-d14c2a9e4e) Lines: 1336 1642 81.4 % Date: 2026-01-29 09:23:20 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655116
Babai_fast	30141939
Babai_heuristic	288770
GS_extraprec	4727757
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848815
ZM_flatter	626850
ZM_flatter_rank	624836
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606289
ZM_is_lower	1205112
ZM_is_upper	4236488
ZM_lll_norms	7137870
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4089942
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580816
addmulzu2n	271563
addzi	17783294
affdbldpe	3206954
affdpe	25731437
affidpe	20752597
affii_or_copy_gc	1390418
cget_dblmat	8415263
cget_dblvec	34983141
cget_dpemat	3206957
cget_dpevec	13296373
condition_bound	4727758
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118037444
dbldotsquare	2481112
dblrotate	34545790
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516968
dpe_abssmall	1390432
dpe_addmuluz	342913
dpe_addz	1943126
dpe_cmp	5263476
dpe_cmpmul	5263467
dpe_divz	14076525
dpe_muluz	799876
dpe_mulz	56966496
dpe_negz	244397
dpe_normalize	48111183
dpe_normalize0	108568344
dpe_submuluz	412412
dpe_submulz	51703160
dpe_subz	53734292
dperotate	652350
dpetor	93802
drop	1347114
flat	1347115
flattergram_i	2967
fplll	0
fplll_dpe	1603480
fplll_fast	2103821
fplll_flatter	625797
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1098839
gramschmidt_dynprec	2694230
gramschmidt_upper	1336
gsisinv	5195508
incrementalGSgen	168
itodbl_exp	162360004
kerint	42
kerint0	70
lll	1243329
lll_finish	2164436
lll_trivial	771701
lllall	36699
lllallgen	168
lllfp	5371398
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096489
mulshift	317717
nbits2prec64	7492767
pari_rint	10767763
potential	1347114
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31870094
rotateG	443224
rotateG_fast	11515264
setG2_fast	16984091
setG2_heuristic	187610
setG_fast	22612333
setG_heuristic	205626
set_line	24882922
sizered	1347115
spread	5852697
submuliu2n	4182024
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923318
submulzu2n	262549
subzi	18524791
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11958600
vectail_inplace	2090305

Generated by: LCOV version 1.16