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 30678-a23e500d22) Lines: 1336 1642 81.4 % Date: 2026-02-15 09:22:35 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655140
Babai_fast	30143625
Babai_heuristic	288770
GS_extraprec	4727921
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848926
ZM_flatter	626848
ZM_flatter_rank	624834
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606360
ZM_is_lower	1205115
ZM_is_upper	4236606
ZM_lll_norms	7138067
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4087694
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580773
addmulzu2n	271563
addzi	17783141
affdbldpe	3206956
affdpe	25731484
affidpe	20752781
affii_or_copy_gc	1390407
cget_dblmat	8415581
cget_dblvec	34985201
cget_dpemat	3206961
cget_dpevec	13296408
condition_bound	4727924
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118040434
dbldotsquare	2481184
dblrotate	34547724
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14517039
dpe_abssmall	1390425
dpe_addmuluz	342912
dpe_addz	1943124
dpe_cmp	5263494
dpe_cmpmul	5263486
dpe_divz	14076592
dpe_muluz	799874
dpe_mulz	56967157
dpe_negz	244400
dpe_normalize	48111784
dpe_normalize0	108569714
dpe_submuluz	412412
dpe_submulz	51703848
dpe_subz	53734989
dperotate	652350
dpetor	93799
drop	1347170
flat	1347170
flattergram_i	2967
fplll	0
fplll_dpe	1603480
fplll_fast	2103899
fplll_flatter	625795
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098839
gramschmidt_dynprec	2694340
gramschmidt_upper	1336
gsisinv	5195681
incrementalGSgen	168
itodbl_exp	162364399
kerint	42
kerint0	70
lll	1243329
lll_finish	2164527
lll_trivial	771699
lllall	36699
lllallgen	168
lllfp	5371568
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096869
mulshift	317717
nbits2prec64	7493030
pari_rint	10768813
potential	1347171
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31871988
rotateG	443224
rotateG_fast	11515898
setG2_fast	16985071
setG2_heuristic	187610
setG_fast	22613839
setG_heuristic	205626
set_line	24884623
sizered	1347170
spread	5852935
submuliu2n	4178747
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923275
submulzu2n	262549
subzi	18524754
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959229
vectail_inplace	2090400

Generated by: LCOV version 1.16