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 30672-116f3d5b0e) Lines: 1336 1642 81.4 % Date: 2026-02-06 09:23:51 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655062
Babai_fast	30137847
Babai_heuristic	288770
GS_extraprec	4727578
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848564
ZM_flatter	626832
ZM_flatter_rank	624818
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606279
ZM_is_lower	1205100
ZM_is_upper	4236327
ZM_lll_norms	7137620
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4088704
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580812
addmulzu2n	271563
addzi	17783223
affdbldpe	3206947
affdpe	25730983
affidpe	20752246
affii_or_copy_gc	1390405
cget_dblmat	8415212
cget_dblvec	34981824
cget_dpemat	3206944
cget_dpevec	13296488
condition_bound	4727578
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118019433
dbldotsquare	2481219
dblrotate	34541082
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516499
dpe_abssmall	1390423
dpe_addmuluz	342913
dpe_addz	1943120
dpe_cmp	5263388
dpe_cmpmul	5263383
dpe_divz	14076072
dpe_muluz	799875
dpe_mulz	56964016
dpe_negz	244374
dpe_normalize	48108756
dpe_normalize0	108563111
dpe_submuluz	412411
dpe_submulz	51700793
dpe_subz	53731911
dperotate	652349
dpetor	93802
drop	1347038
flat	1347037
flattergram_i	2967
fplll	0
fplll_dpe	1603475
fplll_fast	2103805
fplll_flatter	625779
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44537
get_gramschmidt	1098829
gramschmidt_dynprec	2694075
gramschmidt_upper	1336
gsisinv	5195333
incrementalGSgen	168
itodbl_exp	162356680
kerint	42
kerint0	70
lll	1243320
lll_finish	2164414
lll_trivial	771699
lllall	36699
lllallgen	168
lllfp	5371172
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096024
mulshift	317717
nbits2prec64	7492403
pari_rint	10767808
potential	1347039
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31865336
rotateG	443223
rotateG_fast	11513724
setG2_fast	16981543
setG2_heuristic	187610
setG_fast	22609563
setG_heuristic	205626
set_line	24880536
sizered	1347038
spread	5852517
submuliu2n	4181662
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923295
submulzu2n	262549
subzi	18524800
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11956996
vectail_inplace	2090284

Generated by: LCOV version 1.16