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 30802-b11b770002) Lines: 1336 1642 81.4 % Date: 2026-04-11 09:26:21 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656283
Babai_fast	30147223
Babai_heuristic	288770
GS_extraprec	4727263
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847974
ZM_flatter	626864
ZM_flatter_rank	624850
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606610
ZM_is_lower	1205481
ZM_is_upper	4236700
ZM_lll_norms	7137845
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087573
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580657
addmulzu2n	271563
addzi	17782796
affdbldpe	3207787
affdpe	25733340
affidpe	20756815
affii_or_copy_gc	1390393
cget_dblmat	8418634
cget_dblvec	34999278
cget_dpemat	3207779
cget_dpevec	13300831
condition_bound	4727263
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118037735
dbldotsquare	2482399
dblrotate	34552906
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14519194
dpe_abssmall	1390430
dpe_addmuluz	342907
dpe_addz	1943114
dpe_cmp	5264580
dpe_cmpmul	5264572
dpe_divz	14078695
dpe_muluz	799876
dpe_mulz	56969223
dpe_negz	244386
dpe_normalize	48113876
dpe_normalize0	108576398
dpe_submuluz	412418
dpe_submulz	51704763
dpe_subz	53735899
dperotate	652350
dpetor	93774
drop	1347015
flat	1347014
flattergram_i	2967
fplll	0
fplll_dpe	1603895
fplll_fast	2104660
fplll_flatter	625811
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1099264
gramschmidt_dynprec	2694026
gramschmidt_upper	1336
gsisinv	5195420
incrementalGSgen	168
itodbl_exp	162344191
kerint	28
kerint0	56
lll	1243426
lll_finish	2165280
lll_trivial	771774
lllall	36699
lllallgen	168
lllfp	5371240
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096722
mulshift	317610
nbits2prec64	7492469
pari_rint	10769192
potential	1347015
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31877412
rotateG	443224
rotateG_fast	11517651
setG2_fast	16987127
setG2_heuristic	187610
setG_fast	22618016
setG_heuristic	205626
set_line	24889265
sizered	1347015
spread	5852927
submuliu2n	4174016
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923262
submulzu2n	262549
subzi	18524524
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11960962
vectail_inplace	2091115

Generated by: LCOV version 1.16