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

Generated by: LCOV version 1.16