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 30773-2078653b96) Lines: 1336 1642 81.4 % Date: 2026-03-31 09:27:24 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4656151
Babai_fast	30141872
Babai_heuristic	288770
GS_extraprec	4726937
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4847826
ZM_flatter	626834
ZM_flatter_rank	624819
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606517
ZM_is_lower	1205456
ZM_is_upper	4236455
ZM_lll_norms	7137540
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4085426
addmuliu642n	668118
addmuliu64_inplace	9567280
addmulziu	4580735
addmulzu2n	271563
addzi	17783212
affdbldpe	3207736
affdpe	25732795
affidpe	20756250
affii_or_copy_gc	1390419
cget_dblmat	8418138
cget_dblvec	34996591
cget_dpemat	3207728
cget_dpevec	13300831
condition_bound	4726936
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118015546
dbldotsquare	2482456
dblrotate	34546917
do_SWAPgen	196
dpeM_diagonal_shallow	20140
dpe_abscmp	14518534
dpe_abssmall	1390433
dpe_addmuluz	342907
dpe_addz	1943123
dpe_cmp	5264445
dpe_cmpmul	5264442
dpe_divz	14078104
dpe_muluz	799875
dpe_mulz	56966288
dpe_negz	244392
dpe_normalize	48110957
dpe_normalize0	108570008
dpe_submuluz	412417
dpe_submulz	51701951
dpe_subz	53733104
dperotate	652350
dpetor	93773
drop	1346907
flat	1346908
flattergram_i	2967
fplll	0
fplll_dpe	1603870
fplll_fast	2104537
fplll_flatter	625780
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1099241
gramschmidt_dynprec	2693814
gramschmidt_upper	1336
gsisinv	5195106
incrementalGSgen	168
itodbl_exp	162300418
kerint	28
kerint0	56
lll	1243425
lll_finish	2165142
lll_trivial	771772
lllall	36699
lllallgen	168
lllfp	5370916
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096073
mulshift	317610
nbits2prec64	7491943
pari_rint	10768593
potential	1346908
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31871412
rotateG	443224
rotateG_fast	11515650
setG2_fast	16984037
setG2_heuristic	187610
setG_fast	22614440
setG_heuristic	205626
set_line	24885429
sizered	1346908
spread	5852524
submuliu2n	4172238
submuliu642n	683445
submuliu64_inplace	9625761
submulshift	1499787
submulziu	5923408
submulzu2n	262549
subzi	18524917
truncexpo	12138
u64toi	19876486
u64toineg	668118
update_alpha	11958986
vectail_inplace	2090977

Generated by: LCOV version 1.16