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 30616-7aa4fb0184) Lines: 1336 1642 81.4 % Date: 2026-01-17 09:22:32 Functions: 125 130 96.2 % Legend: Lines: hit not hit

Function Name	Hit count
Babai	0
Babai_dpe	4655045
Babai_fast	30139268
Babai_heuristic	288770
GS_extraprec	4727528
REDgen	196
RgM_Cholesky_dynprec	2967
RgM_flip	34918
RgM_flop	0
RgM_is_square_mat	45828
ZC_to_RC	15945
ZM2_lll_norms	4848573
ZM_flatter	626834
ZM_flatter_rank	624820
ZM_flattergram	961
ZM_flattergram_rank	961
ZM_is_knapsack	606320
ZM_is_lower	1205098
ZM_is_upper	4236353
ZM_lll_norms	7137643
ZM_to_RM	4244
absrsmall	696466
absrsmall2	401466
addmuliu2n	4084420
addmuliu642n	668454
addmuliu64_inplace	9572242
addmulziu	4580692
addmulzu2n	271563
addzi	17782768
affdbldpe	3206935
affdpe	25730932
affidpe	20752133
affii_or_copy_gc	1390397
cget_dblmat	8415380
cget_dblvec	34983024
cget_dpemat	3206929
cget_dpevec	13296255
condition_bound	4727528
dbg_flatter	0
dbg_flattergram	0
dbldotproduct	118016015
dbldotsquare	2481169
dblrotate	34542855
do_SWAPgen	196
dpeM_diagonal_shallow	20147
dpe_abscmp	14516543
dpe_abssmall	1390417
dpe_addmuluz	342913
dpe_addz	1943128
dpe_cmp	5263391
dpe_cmpmul	5263380
dpe_divz	14076085
dpe_muluz	799871
dpe_mulz	56964244
dpe_negz	244382
dpe_normalize	48108984
dpe_normalize0	108563293
dpe_submuluz	412409
dpe_submulz	51701007
dpe_subz	53732104
dperotate	652350
dpetor	93802
drop	1347054
flat	1347055
flattergram_i	2967
fplll	0
fplll_dpe	1603470
fplll_fast	2103850
fplll_flatter	625781
fplll_heuristic	4244
gc_lll	4833
get_gaussred	44539
get_gramschmidt	1098826
gramschmidt_dynprec	2694108
gramschmidt_upper	1336
gsisinv	5195289
incrementalGSgen	168
itodbl_exp	162274171
kerint	42
kerint0	70
lll	1243329
lll_finish	2164458
lll_trivial	771701
lllall	36699
lllallgen	168
lllfp	5371221
lllgen	42
lllgram	9089
lllgramallgen	168
lllgramgen	42
lllgramint	36439
lllgramkerim	35
lllgramkerimgen	42
lllint	183
lllkerim	35
lllkerimgen	42
matkerint0	28
mpabscmp	4096253
mulshift	317717
nbits2prec64	7492463
pari_rint	10768623
potential	1347055
pslg	504
qflll0	301
qflllgram	63
qflllgram0	245
realdotproduct	1183370
realsqrdotproduct	197413
rotate	31867301
rotateG	443224
rotateG_fast	11514332
setG2_fast	16982434
setG2_heuristic	187610
setG_fast	22610274
setG_heuristic	205626
set_line	24880558
sizered	1347055
spread	5852500
submuliu2n	4176063
submuliu642n	684645
submuliu64_inplace	9623289
submulshift	1501323
submulziu	5923200
submulzu2n	262549
subzi	18524421
truncexpo	12138
u64toi	19880176
u64toineg	668454
update_alpha	11957691
vectail_inplace	2090329

Generated by: LCOV version 1.16