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 - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30831-19b50a36d0) Lines: 1467 1530 95.9 % Date: 2026-04-22 09:25:48 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5439
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15203
_sqrtnr	22594
polrootsbound_i	27095
polrootsbound	27102
RgX_normalize1	35703
ZX_realroots_irred	48571
realroots	50627
ZX_sturm_irred	116668
ZX_sturm_i	123063
split_pols	166697
polsolve	166699
splitcauchy	166706
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267226
QX_complex_roots	296313
_gen_zero	325893
fix_roots1	398808
conformal_mapping	468809
split_1	468810
split_0_1	469180
split_0_2	469181
logradius	494963
split_2	494963
parameters	494966
update_radius	494966
optimize_split	494967
split_fromU	494967
split_0	495335
refine_F	503364
dft	503366
all_roots	536383
clean_roots	536430
fix_roots	537487
a_posteriori_errors	537490
mygprec_special	537491
logpre_modulus	608286
logmodulus	608292
abs_update_r	780222
ind_maxlog2	904414
isexactscalar	934122
isreal	963777
initdft	998332
dual_modulus	1014573
usp	1126113
ZX_sturmpart	1128311
check_ab	1178938
tocomplex	1215984
isvalidcoeff	1230551
ZX_Uspensky	1313905
conformal_basecase	1406550
conformal_pol	1406670
fujiwara_bound_real	1406977
split_complete	1528145
homothetie	1613725
append_clone	1616264
logmin_modulus	1617765
root_error	1914522
mygprecrc_special	2181524
ZX_rescale2prim	2233883
cmp_complex_appr	2241680
fujiwara_bound	2272871
checkbound	2355003
refine_H	2464716
scalepol	4297668
mygprec_absolute	4344369
_mp_mul	4374556
logmax_modulus	4458791
bkeval_single_power	5234649
splitpoleval	5234815
newton_polygon	5521326
X2XP1	5990783
_mp_sqr	6298253
dblexp	6563054
quicktofp	6984421
RgX_gtofp_bit	7048823
abs_update	8021532
mydbllogr	9566212
homothetie2n	9979808
_gen_nored	11200891
eval_rel_pol	13169765
fft	14196551
_gen_one	14469495
ZX_to_ZiX	16489847
pol_to_gaussint	17628514
_mp_add	24661434
_mp_cmul	34763739
myshiftrc	35579404
homothetie_gauss	36563253
findpower	41028145
lower_bound	41028434
graeffe	49604443
mydbllog2r	57618018
mygprec	63865380
ZiX_sqr	99219087
myshiftic	136092592
mygprecrc	215563950
mydbllog2i	226771163
dbllog2	303917364

Generated by: LCOV version 1.16