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 30724-b49b12e983) Lines: 2476 2664 92.9 % Date: 2026-03-02 09:24:58 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
RgX_integ	77
gsubst_v	84
gtovecsmallpost	98
gtovecsmallpre	98
serreverse	98
gppadicprec	105
denompol	119
liftint	119
hqfeval	168
QpV_to_QV	196
derivnser	210
mod_r	210
trunc0	217
denominator_v	287
gtocolrev0	294
compo	299
_quotfs	301
quotfs	301
gtovecrev0	308
gtocol	350
integ	350
vec_padicprec_relative	371
_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
RgX_derivn	798
vec_padicprec	826
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
padicprec_relative	2275
sertrunc_copy	2317
ceilr	2504
var2_polmod	3339
diffop	3535
init_vectopre	3773
gtovecpre	3829
gtocol0	4004
padicprec	4172
ser_unscale	4193
var2_rfrac	5131
liftpol	5726
serdeflate	5866
round0	6097
greal	6958
ggrando	7175
qf_RgM_apply	7663
gtovecsmall0	7819
poldeflate	8267
gsubstpol	8302
var2_aux	8470
numer	8631
numerator	8925
geval_gp	11020
degree	11314
ser2rfrac_i	11487
gdeflate	14231
isinexactreal	14357
gdvd	15887
qfeval	17023
Itos	19145
gtovecsmall	19187
serequalXk	21588
RgC_RgV_mulrealsym	21630
mkintn	24531
derivser	25872
liftall	26250
integser	26516
gimag	29365
gppoldegree	31224
centerliftii	42469
ser_inv	46746
gvar9	53354
centerlift	59563
floor_safe	72060
recvar	75243
mulimag	103649
_sercoef	111958
deriv	114128
uu32toineg	114614
gtovec	119447
gtovec0	123878
denominator	128149
content0	131005
mkvecsmalln	134033
poldegree	144088
is_realext	177888
denom	228909
gceil	235566
vecdenom	242315
deg1pol	247180
gge	248443
roundr_safe	302180
deg2pol_shallow	321243
gdiventgs	326342
issmall	326463
ZX_deflate_max	327528
uu32toi	328484
qfbeval	347816
qfnorm0	348019
qfeval0	348075
gfrac	426531
isint	486854
qf_ZM_apply	497034
init_qf_apply	504697
ZX_deflate_order	526323
RgX_degree	566837
gtrunc	597763
gnot	606067
lift_shallow	650129
padic_to_Q	689510
polcoef	727503
subst_higher	727720
RgX_deflate_max	728820
ser2pol_i_normalize	761127
precrealexact	878757
gtopoly	1042815
gmodulss	1054629
ceil_safe	1056632
RgX_deflate_order	1133231
gcvtoi	1140235
mkvecn	1218916
gmodulsg	1322147
gdivround	1459071
isrealappr	1885579
gmodulo	1938451
liftall_shallow	2003687
lift	2204744
ggt	2374972
gtopolyrev	2434040
RgX_cxeval	2441114
lift0	2521485
_polcoef	2600788
gsubst	2708575
ground	2837152
roundr	3135964
_gtopoly	3476857
polcoef_i	3613007
scalarpol_shallow	3630920
modRr_i	5097886
gfloor	5360082
mkpoln	5603904
gdiventsg	6202486
gdivent	6204674
glt	6328208
gle	7628236
deg1pol_shallow	8891322
numer_i	8948355
prec0	9751158
ser2pol_i	10063944
simplify	11565536
denom_i	12211968
poleval	13290196
gprecision	14433291
mulreal	15739719
gvar2	20438826
precCOMPLEX	21398487
liftpol_shallow	21939454
gmodgs	22029344
scalarpol	23560371
gmodsg	44997997
gmod	46153987
gshift	47150560
geq	47668235
round_i	54189281
gne	61324997
diviiround	67769225
grndtoi	91632054
_egal_i	108993223
_egal	108993229
gtrunc2n	117369494
isinexact	126642033
gvar	136033495
op_ReIm	203596610
imag_i	298996617
real_i	322331277
simplify_shallow	563538694
precREAL	970360772
precision	981696757

Generated by: LCOV version 1.16