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 30735-65f72320ad) Lines: 2476 2664 92.9 % Date: 2026-03-15 09:23:45 Functions: 237 247 96.0 % Legend: Lines: hit not hit

Function Name	Hit count
Itos	19145
QpV_to_QV	196
Qp_to_Q	735
RgC_RgV_mulrealsym	21630
RgM_mulreal	0
RgXY_cxevalx	63
RgX_cxeval	2442013
RgX_deflate_max	728998
RgX_deflate_order	1133461
RgX_degree	566845
RgX_derivn	798
RgX_integ	77
ZX_deflate_max	327819
ZX_deflate_order	526741
_abs	518
_egal	108993160
_egal_i	108993152
_gtopoly	3477150
_polcoef	2600944
_quot	875
_quotfi	7
_quotfs	301
_quotqs	28
_quotri	7
_quotrs	28
_quotsf	35
_quotsq	70
_quotsr	70
_rfraccoef	21
_sercoef	111958
ceil_safe	1056895
ceilr	2504
centerlift	60473
centerlift0	707
centerliftii	42518
compo	327
constmat	14
content0	131005
deg1pol	247185
deg1pol_shallow	8893090
deg2pol_shallow	321293
degree	11314
denom	228909
denom_i	12211548
denominator	128149
denominator_v	287
denompol	119
deriv	114128
derivn	1379
derivnser	210
derivser	25872
diffop	3535
diffop0	42
diviiround	67770373
divrem	1057
err_intformal	35
floor_safe	72127
gceil	235566
gcvtoi	1140560
gdeflate	14231
gdivent	6204674
gdiventgs	326343
gdiventres	1064
gdiventsg	6202486
gdivmod	0
gdivround	1459137
gdvd	15886
geq	47668095
geval	0
geval_gp	11020
gfloor	5360084
gfrac	426531
gge	248443
ggrando	7175
ggt	2374979
gimag	29365
gle	7628237
glt	6328208
gmod	46154266
gmodgs	22029344
gmodsg	44997997
gmodulo	1938505
gmodulsg	1322175
gmodulss	1054677
gne	61325067
gnot	606088
gppadicprec	105
gppoldegree	31231
gprecision	14434795
gpserprec	42
greal	6958
grndtoi	91643542
ground	2838221
gshift	47152148
gsubst	2708575
gsubst_v	84
gsubstpol	8302
gsubstvec	980
gtocol	350
gtocol0	4004
gtocolrev	0
gtocolrev0	294
gtopoly	1043107
gtopolyrev	2434040
gtovec	119447
gtovec0	123878
gtovecpost	1092
gtovecpre	3829
gtovecrev	0
gtovecrev0	308
gtovecsmall	19187
gtovecsmall0	7819
gtovecsmallpost	98
gtovecsmallpre	98
gtrunc	597763
gtrunc2n	117414450
gvar	136018226
gvar2	20438217
gvar9	56644
hqfeval	168
imag_i	299142819
init_qf_apply	504697
init_vectopre	3773
integ	350
integ_act	14
integser	26516
is_realext	177887
is_realquad	1099
iscomplex	0
isinexact	126562126
isinexactreal	14357
isint	486854
isrationalzeroscalar	0
isrealappr	1886459
issmall	326463
lift	2204782
lift0	2521523
lift_shallow	652411
liftall	26250
liftall_shallow	2003687
liftint	119
liftint_shallow	546
liftpol	5726
liftpol_shallow	21929023
listdeflate	21
lookup	833
mkcoln	1379
mkintn	24531
mkpoln	5604809
mkvecn	1218953
mkvecsmalln	134028
modRr_i	5098261
modRr_safe	0
mod_r	210
modrs	14
modsf	35
modsr	35
mulimag	103649
mulreal	15741980
numer	8631
numer_i	8948348
numerator	8925
op_ReIm	203690373
padic_to_Q	689499
padic_to_Q_shallow	14
padicprec	4172
padicprec_relative	2275
polcoef	727580
polcoef_i	3613224
poldeflate	8267
poldegree	144105
poleval	13289624
pollead	1211
prec0	9750398
precCOMPLEX	21400669
precREAL	970281551
precision	981619808
precrealexact	878759
qf_RgM_apply	7663
qf_ZM_apply	497034
qfb_ZM_apply	14
qfb_ZM_apply_i	14
qfbeval	347816
qfbevalb	7
qfbil	0
qfeval	17023
qfeval0	348075
qfevalb	567
qfnorm	0
qfnorm0	348019
quad_floor	518
quot	777
quotfi	7
quotfs	301
quotqs	14
quotrem	518
quotri	7
quotrs	14
quotsf	35
quotsq	35
quotsr	35
real_i	322468204
recvar	75236
rfrac_deriv	56
rfrac_derivn	42
round0	6097
round_i	54195931
roundr	3136528
roundr_safe	302180
safe_polmod	1358
scalarmat2	56
scalarpol	9055459
scalarpol_shallow	3631889
ser2pol_i	10063944
ser2pol_i_normalize	761127
ser2rfrac	707
ser2rfrac_i	11487
ser_inv	46746
ser_unscale	4193
serdeflate	5866
serdiffop	7
serequalXk	21588
serprec	70
serreverse	98
sertrunc	70
sertrunc_copy	2317
simplify	11572459
simplify_shallow	565134485
subst_higher	727797
subst_polmod	574
swapvar_act	28
tayl	21
tayl_act	14
trunc0	217
uu32toi	328572
uu32toineg	114653
var2_aux	8477
var2_polmod	3570
var2_rfrac	4907
variables_vec	42
variables_vecsmall	1288
vdeflate	63
vec_padicprec	826
vec_padicprec_relative	371
vec_serprec	14
vecdenom	242315
vecdenompol	14

Generated by: LCOV version 1.16