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 30835-e55edf4b45) Lines: 1467 1530 95.9 % Date: 2026-04-26 09:26:37 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	15204
_sqrtnr	22597
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48575
realroots	50627
ZX_sturm_irred	116675
ZX_sturm_i	123070
split_pols	166702
polsolve	166710
splitcauchy	166713
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267228
QX_complex_roots	296301
_gen_zero	326011
fix_roots1	398796
conformal_mapping	468811
split_1	468813
split_0_1	469180
split_0_2	469180
logradius	494959
update_radius	494960
parameters	494961
split_2	494961
optimize_split	494963
split_fromU	494963
split_0	495333
refine_F	503355
dft	503362
all_roots	536384
clean_roots	536423
fix_roots	537475
a_posteriori_errors	537488
mygprec_special	537488
logpre_modulus	608272
logmodulus	608275
abs_update_r	780157
ind_maxlog2	904419
isexactscalar	934122
isreal	963774
initdft	998321
dual_modulus	1014567
usp	1126115
ZX_sturmpart	1128339
check_ab	1178966
tocomplex	1215969
isvalidcoeff	1230557
ZX_Uspensky	1313932
conformal_basecase	1406549
conformal_pol	1406668
fujiwara_bound_real	1407006
split_complete	1528146
homothetie	1613703
append_clone	1616242
logmin_modulus	1617792
root_error	1914483
mygprecrc_special	2181500
ZX_rescale2prim	2233883
cmp_complex_appr	2241647
fujiwara_bound	2272904
checkbound	2355060
refine_H	2464710
scalepol	4297668
mygprec_absolute	4344373
_mp_mul	4374538
logmax_modulus	4458851
splitpoleval	5235492
bkeval_single_power	5235570
newton_polygon	5521231
X2XP1	5990751
_mp_sqr	6298384
dblexp	6563019
quicktofp	6984351
RgX_gtofp_bit	7048665
abs_update	8021882
mydbllogr	9566646
homothetie2n	9979705
_gen_nored	11200607
eval_rel_pol	13169594
fft	14196331
_gen_one	14472519
ZX_to_ZiX	16494633
pol_to_gaussint	17628462
_mp_add	24660686
_mp_cmul	34763217
myshiftrc	35579050
homothetie_gauss	36563027
lower_bound	41029554
findpower	41030494
graeffe	49602884
mydbllog2r	57619076
mygprec	63865469
ZiX_sqr	99229843
myshiftic	136062396
mygprecrc	215583601
mydbllog2i	226763548
dbllog2	303906504

Generated by: LCOV version 1.16