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 30660-09c6d0ed2e) Lines: 1336 1642 81.4 % Date: 2026-02-03 09:23:21 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655250
Babai_fast	30144754
Babai_heuristic	288770
GS_extraprec	4728130
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4849076
ZM_flatter	626870
ZM_flatter_rank	624856
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606444
ZM_is_lower	1205136
ZM_is_upper	4236785
ZM_lll_norms	7138303
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4089439
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580810
addmulzu2n	271563
addzi	17783376
affdbldpe	3207013
affdpe	25731905
affidpe	20753224
affii_or_copy_gc	1390406
cget_dblmat	8415998
cget_dblvec	34986610
cget_dpemat	3207010
cget_dpevec	13296785
condition_bound	4728130
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118045325
dbldotsquare	2481345
dblrotate	34549044
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14517275
dpe_abssmall	1390425
dpe_addmuluz	342913
dpe_addz	1943128
dpe_cmp	5263586
dpe_cmpmul	5263580
dpe_divz	14076897
dpe_muluz	799873
dpe_mulz	56967882
dpe_negz	244395
dpe_normalize	48112303
dpe_normalize0	108571144
dpe_submuluz	412411
dpe_submulz	51704411
dpe_subz	53735534
dperotate	652350
dpetor	93802
drop	1347249
flat	1347249
flattergram_i	2967
fplll	0
fplll_dpe	1603511
fplll_fast	2104006
fplll_flatter	625816
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44538
get_gramschmidt	1098854
gramschmidt_dynprec	2694498
gramschmidt_upper	1336
gsisinv	5195899
incrementalGSgen	168
itodbl_exp	162363568
kerint	42
kerint0	70
lll	1243328
lll_finish	2164620
lll_trivial	771704
lllall	36699
lllallgen	168
lllfp	5371798
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4097083
mulshift	317717
nbits2prec64	7493423
pari_rint	10769158
potential	1347250
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31873369
rotateG	443224
rotateG_fast	11516369
setG2_fast	16985768
setG2_heuristic	187610
setG_fast	22614622
setG_heuristic	205626
set_line	24885049
sizered	1347250
spread	5853236
submuliu2n	4181644
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923315
submulzu2n	262549
subzi	18524870
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11959702
vectail_inplace	2090492

Generated by: LCOV version 1.16