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 - modules - stark.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30702-bddb8d6928) Lines: 1676 1810 92.6 % Date: 2026-02-23 02:23:56 Functions: 129 131 98.5 % Legend: Lines: hit not hit

Function Name	Hit count
AChi	1520
AddMulCoeff	4408551
AllArtinNumbers	524
AllChars	295
AllStark	470
ArtinNumber	744
CHI_eval	460517
CHI_eval_n	461785
CharEval	10505
CharEval_n	10545
CharNewPrec	230
ComputeCoeff	1197
ComputeKernel	325
CopyCoeff	257113
CorrectCoeff	1724
CplxModulus	235
EvalCoeff	2618219
FindModulus	230
FreeMat	4775
GCD24	581
GenusFieldQuadImag	290
GenusFieldQuadReal	10
GetST	289
GetST0	142
GetValue	959
GetValue1	30
InitChar	289
InitMatAn	3051
InitPrimes	377
InitPrimesQuad	147
InitQuotient	950
InitReduction	1724
IsGoodSubgroup	370
IsZero	5482544
L_vanishes_at_0	765
LiftChar	2633
MulCoeff	1073993
NextElt	578838
Polmod2Coeff	285514
QuadGetST	177
RecCoeff	390
RecCoeff2	1540
RecCoeff3	298
RgX_findquad	10
ST_alloc	319
TestOne	1842
_0toCoeff	711717
_ZV_cmp	90
_addmulrr	37342414
_addrr	76280236
_data3	408
_sercoeff	333624
abmap_kernel	325
abmap_subgroup_image	11934
affect_coeff	333624
an_AddMul	257113
an_mul	79231
an_set0	75
an_set0_coprime	71708
bnrL1	60
bnrrootnumber	66
bnrstark	147
bnrstark_cyclic	0
bnrstarkunit	10
ch_deg	959
ch_get3	1200
chi_get_c	13563
chi_get_deg	39111
chk_reccoeff	286
chk_reccoeff_init	298
clear_cScT	383
compocyclo	25
compocyclop	10
computeP2	50
computean	527
computeth2	3110
cyc2elts	38176
cyc_is_cyclic	835
d1	255948
d2	85300
deg0	25
deg11	318
deg12	17553
deg2	18969
divcond	350
do_compo	35
ellphist	6220
ellphistinit	3110
eval_i	1426
findbezk	3160
findbezk_pol	50
findquad	50
galoisapplypol	10
get_Char	2682
get_P	519
get_cS_cT	374677
get_i0	142
get_ilambda	590
get_lambda	50
get_om	3110
get_prdiff	130
get_prec	0
getallelts	50
getallrootsof1	50
gpq	2930
hasexp2	581
init_CHI	3018
init_CHI_C	1164
init_CHI_alg	1854
init_cScT	241
init_pq	35
isZ	85
makescind	95
mpvecpowdiv	167
ppgamma	241
qfbforms	325
quadhilbert	412
quadhilbertimag	330
quadhilbertreal	105
quadray	117
quadray_init	607
sortChars	289
split_pol_quad	95
subgp_intersect	405
subgroup_classes	235
to_approx	6270
treatspecialsigma	85
uhasexp2	945
zeta_get_N0	476
zeta_get_i0	142
zeta_get_limx	377

Generated by: LCOV version 1.16