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 30610-dfc8ed42cd) Lines: 1336 1642 81.4 % Date: 2026-01-14 09:22:13 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655051
Babai_fast	30135671
Babai_heuristic	289747
GS_extraprec	4727816
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15952
ZM2_lll_norms	4848913
ZM_flatter	626844
ZM_flatter_rank	624830
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606193
ZM_is_lower	1205108
ZM_is_upper	4236499
ZM_lll_norms	7137855
ZM_to_RM	4246
absrsmall	698128
absrsmall2	402705
addmuliu2n	4088326
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580772
addmulzu2n	271563
addzi	17783161
affdbldpe	3206942
affdpe	25730932
affidpe	20752174
affii_or_copy_gc	1390384
cget_dblmat	8414873
cget_dblvec	34980186
cget_dpemat	3206920
cget_dpevec	13296453
condition_bound	4727815
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118008666
dbldotsquare	2481141
dblrotate	34538933
do_SWAPgen	196
dpeM_diagonal_shallow	20146
dpe_abscmp	14516438
dpe_abssmall	1390420
dpe_addmuluz	342910
dpe_addz	1943117
dpe_cmp	5263386
dpe_cmpmul	5263377
dpe_divz	14075994
dpe_muluz	799871
dpe_mulz	56963587
dpe_negz	244385
dpe_normalize	48108277
dpe_normalize0	108562036
dpe_submuluz	412411
dpe_submulz	51700386
dpe_subz	53731468
dperotate	652348
dpetor	93800
drop	1347124
flat	1347125
flattergram_i	2967
fplll	0
fplll_dpe	1603473
fplll_fast	2103720
fplll_flatter	625791
fplll_heuristic	4246
gc_lll	4835
get_gaussred	44539
get_gramschmidt	1098834
gramschmidt_dynprec	2694248
gramschmidt_upper	1336
gsisinv	5195574
incrementalGSgen	168
itodbl_exp	162307692
kerint	42
kerint0	70
lll	1243328
lll_finish	2164326
lll_trivial	771700
lllall	36699
lllallgen	168
lllfp	5371428
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096155
mulshift	317718
nbits2prec64	7492799
pari_rint	10766911
potential	1347125
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1186355
realsqrdotproduct	198160
rotate	31865374
rotateG	443654
rotateG_fast	11512985
setG2_fast	16980332
setG2_heuristic	188352
setG_fast	22607927
setG_heuristic	206374
set_line	24878481
sizered	1347126
spread	5852666
submuliu2n	4180788
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501331
submulziu	5923291
submulzu2n	262549
subzi	18524661
truncexpo	12139
u64toi	19880176
u64toineg	668454
update_alpha	11956734
vectail_inplace	2090199

Generated by: LCOV version 1.16