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: 2026-01-21 09:23:33 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655109
Babai_fast	30136532
Babai_heuristic	288770
GS_extraprec	4727762
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848848
ZM_flatter	626857
ZM_flatter_rank	624843
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606298
ZM_is_lower	1205122
ZM_is_upper	4236538
ZM_lll_norms	7137901
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4086761
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580802
addmulzu2n	271563
addzi	17783139
affdbldpe	3206982
affdpe	25731117
affidpe	20752332
affii_or_copy_gc	1390415
cget_dblmat	8415353
cget_dblvec	34982267
cget_dpemat	3206988
cget_dpevec	13296529
condition_bound	4727762
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118009151
dbldotsquare	2481195
dblrotate	34539785
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516617
dpe_abssmall	1390428
dpe_addmuluz	342913
dpe_addz	1943127
dpe_cmp	5263455
dpe_cmpmul	5263452
dpe_divz	14076168
dpe_muluz	799872
dpe_mulz	56964023
dpe_negz	244421
dpe_normalize	48108668
dpe_normalize0	108562909
dpe_submuluz	412412
dpe_submulz	51700703
dpe_subz	53731793
dperotate	652350
dpetor	93802
drop	1347133
flat	1347134
flattergram_i	2967
fplll	0
fplll_dpe	1603491
fplll_fast	2103842
fplll_flatter	625804
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098850
gramschmidt_dynprec	2694265
gramschmidt_upper	1336
gsisinv	5195507
incrementalGSgen	168
itodbl_exp	162284845
kerint	42
kerint0	70
lll	1243329
lll_finish	2164461
lll_trivial	771698
lllall	36699
lllallgen	168
lllfp	5371453
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096328
mulshift	317717
nbits2prec64	7492829
pari_rint	10767256
potential	1347134
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31864196
rotateG	443224
rotateG_fast	11513307
setG2_fast	16980783
setG2_heuristic	187610
setG_fast	22608448
setG_heuristic	205626
set_line	24878950
sizered	1347134
spread	5852714
submuliu2n	4179917
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923252
submulzu2n	262549
subzi	18524707
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11956643
vectail_inplace	2090332

Generated by: LCOV version 1.16