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 - gen3.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30462-6c568f4018) Lines: 2476 2664 92.9 % Date: 2025-08-10 09:24:05 Functions: 237 247 96.0 % Legend: Lines: hit not hit

Function Name	Hit count
RgM_mulreal	0
gdivmod	0
geval	0
gtocolrev	0
gtovecrev	0
iscomplex	0
isrationalzeroscalar	0
modRr_safe	0
qfbil	0
qfnorm	0
_quotfi	7
_quotri	7
qfbevalb	7
quotfi	7
quotri	7
serdiffop	7
constmat	14
integ_act	14
modrs	14
padic_to_Q_shallow	14
qfb_ZM_apply	14
qfb_ZM_apply_i	14
quotqs	14
quotrs	14
tayl_act	14
vec_serprec	14
vecdenompol	14
_rfraccoef	21
listdeflate	21
tayl	21
_quotqs	28
_quotrs	28
swapvar_act	28
_quotsf	35
err_intformal	35
modsf	35
modsr	35
quotsf	35
quotsq	35
quotsr	35
diffop0	42
gpserprec	42
rfrac_derivn	42
variables_vec	42
rfrac_deriv	56
scalarmat2	56
RgXY_cxevalx	63
vdeflate	63
_quotsq	70
_quotsr	70
serprec	70
sertrunc	70
gsubst_v	84
gtovecsmallpost	98
gtovecsmallpre	98
serreverse	98
RgX_integ	105
gppadicprec	105
denompol	119
liftint	119
hqfeval	168
QpV_to_QV	196
derivnser	210
mod_r	210
trunc0	217
denominator_v	287
gtocolrev0	294
_quotfs	301
quotfs	301
gtovecrev0	308
compo	327
gtocol	350
integ	350
vec_padicprec_relative	399
_abs	518
quad_floor	518
quotrem	518
liftint_shallow	546
qfevalb	567
subst_polmod	574
centerlift0	707
ser2rfrac	707
Qp_to_Q	735
quot	777
vec_padicprec	826
RgX_derivn	833
lookup	833
_quot	875
gsubstvec	980
divrem	1057
gdiventres	1064
gtovecpost	1092
is_realquad	1099
pollead	1211
variables_vecsmall	1288
safe_polmod	1358
derivn	1379
mkcoln	1379
sertrunc_copy	1981
padicprec_relative	2303
ceilr	2504
var2_polmod	3479
diffop	3535
init_vectopre	3563
gtovecpre	3619
gtocol0	3808
padicprec	4172
ser_unscale	4193
liftpol	5726
serdeflate	5768
round0	6027
greal	6958
ggrando	7049
var2_rfrac	7231
qf_RgM_apply	7663
gtovecsmall0	7784
numer	8631
gsubstpol	8722
poldeflate	8722
numerator	8925
var2_aux	10710
geval_gp	11020
ser2rfrac_i	11081
degree	11314
isinexactreal	14357
gdeflate	14553
gdvd	15927
qfeval	17023
gtovecsmall	19040
Itos	19103
serequalXk	21196
RgC_RgV_mulrealsym	21630
mkintn	24440
derivser	25452
integser	26096
liftall	26250
gimag	29351
gppoldegree	31224
centerliftii	42518
ser_inv	45584
gvar9	59388
centerlift	60473
uu32toineg	65574
floor_safe	71940
recvar	75236
mulimag	103649
_sercoef	111902
deriv	114128
gtovec	119447
gtovec0	123668
denominator	128149
content0	131005
mkvecsmalln	134022
poldegree	146517
is_realext	178957
denom	228909
gceil	235566
vecdenom	242315
gge	248443
roundr_safe	302180
deg2pol_shallow	321635
gdiventgs	326220
issmall	326463
ZX_deflate_max	328124
qfbeval	347816
qfnorm0	348019
qfeval0	348075
uu32toi	365166
gfrac	426738
isint	486098
qf_ZM_apply	497034
init_qf_apply	504697
ZX_deflate_order	527329
deg1pol	560505
RgX_degree	567904
gtrunc	597742
gnot	604898
lift_shallow	651725
padic_to_Q	689477
subst_higher	724640
polcoef	727580
RgX_deflate_max	729449
ser2pol_i_normalize	757237
gtopoly	1043294
gmodulss	1053579
ceil_safe	1057182
RgX_deflate_order	1137789
gcvtoi	1140664
mkvecn	1217622
precrealexact	1309382
gmodulsg	1320822
gdivround	1462714
isrealappr	1886465
gmodulo	1937403
liftall_shallow	2003694
lift	2204664
ggt	2374906
gtopolyrev	2434040
RgX_cxeval	2443150
lift0	2521496
_polcoef	2607776
gsubst	2707441
ground	2837164
roundr	3135432
_gtopoly	3477338
polcoef_i	3620048
scalarpol_shallow	3682536
modRr_i	5092140
gfloor	5359006
mkpoln	5600491
gdiventsg	6202486
gdivent	6204674
glt	6328221
gle	7628237
deg1pol_shallow	8567820
numer_i	9050786
prec0	9739571
ser2pol_i	10124418
simplify	11568462
denom_i	12319355
poleval	13384836
gprecision	15021104
mulreal	15747895
gvar2	20673493
liftpol_shallow	22013348
gmodgs	22029308
precCOMPLEX	23168674
gmodsg	44997991
scalarpol	45234826
gmod	46155665
geq	47667979
gshift	47739559
round_i	53599627
gne	61321217
diviiround	64743054
grndtoi	91026904
_egal	108989201
_egal_i	108989202
gtrunc2n	117330346
isinexact	129229606
gvar	131703733
op_ReIm	203605245
imag_i	299022314
real_i	322222963
simplify_shallow	570915952
precREAL	967839405
precision	980351822

Generated by: LCOV version 1.16