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 30573-61accf17c8) Lines: 1336 1642 81.4 % Date: 2025-12-15 09:22:15 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656254
Babai_fast	30205655
Babai_heuristic	288770
GS_extraprec	4728060
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848009
ZM_flatter	626937
ZM_flatter_rank	624923
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606586
ZM_is_lower	1205204
ZM_is_upper	4237113
ZM_lll_norms	7137873
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4104946
addmuliu642n	671548
addmuliu64_inplace	9582880
addmulziu	4580866
addmulzu2n	271563
addzi	17784253
affdbldpe	3207731
affdpe	25735594
affidpe	20756846
affii_or_copy_gc	1390605
cget_dblmat	8418067
cget_dblvec	34994453
cget_dpemat	3207739
cget_dpevec	13299456
condition_bound	4728060
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118240025
dbldotsquare	2481730
dblrotate	34643292
do_SWAPgen	196
dpeM_diagonal_shallow	20294
dpe_abscmp	14519786
dpe_abssmall	1390612
dpe_addmuluz	342913
dpe_addz	1943191
dpe_cmp	5264431
dpe_cmpmul	5264426
dpe_divz	14079291
dpe_muluz	799918
dpe_mulz	56973716
dpe_negz	244435
dpe_normalize	48116960
dpe_normalize0	108582531
dpe_submuluz	412454
dpe_submulz	51709426
dpe_subz	53740649
dperotate	652462
dpetor	94285
drop	1347273
flat	1347278
flattergram_i	2967
fplll	0
fplll_dpe	1603868
fplll_fast	2104518
fplll_flatter	625884
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44560
get_gramschmidt	1099036
gramschmidt_dynprec	2694554
gramschmidt_upper	1336
gsisinv	5195925
incrementalGSgen	168
itodbl_exp	162622332
kerint	42
kerint0	70
lll	1243392
lll_finish	2165223
lll_trivial	771746
lllall	36699
lllallgen	168
lllfp	5372080
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097320
mulshift	318942
nbits2prec64	7493586
pari_rint	10797475
potential	1347276
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31935591
rotateG	443280
rotateG_fast	11547802
setG2_fast	17030260
setG2_heuristic	187610
setG_fast	22661348
setG_heuristic	205626
set_line	24932833
sizered	1347278
spread	5853423
submuliu2n	4197617
submuliu642n	687471
submuliu64_inplace	9633716
submulshift	1507243
submulziu	5923745
submulzu2n	262549
subzi	18525739
truncexpo	12138
u64toi	19904067
u64toineg	671548
update_alpha	11991267
vectail_inplace	2090967

Generated by: LCOV version 1.16