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 30735-65f72320ad) Lines: 1467 1530 95.9 % Date: 2026-03-14 09:23:49 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	8018
ZX_deg1root	15202
_sqrtnr	22594
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48569
realroots	50627
ZX_sturm_irred	116676
ZX_sturm_i	123071
polsolve	166703
split_pols	166703
splitcauchy	166712
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266864
QX_complex_roots	296308
_gen_zero	325993
fix_roots1	398475
split_1	468052
conformal_mapping	468053
split_0_1	468415
split_0_2	468416
logradius	494138
split_2	494143
update_radius	494143
optimize_split	494144
split_fromU	494144
parameters	494146
split_0	494508
refine_F	502527
dft	502529
all_roots	536014
clean_roots	536057
fix_roots	537111
a_posteriori_errors	537117
mygprec_special	537117
logmodulus	607086
logpre_modulus	607089
abs_update_r	779089
ind_maxlog2	903055
isexactscalar	931714
isreal	962195
initdft	996675
dual_modulus	1012819
usp	1126150
ZX_sturmpart	1128370
check_ab	1178997
tocomplex	1213827
isvalidcoeff	1228065
ZX_Uspensky	1313969
conformal_basecase	1404270
conformal_pol	1404392
fujiwara_bound_real	1407033
split_complete	1526131
homothetie	1610776
append_clone	1614315
logmin_modulus	1615178
root_error	1912442
mygprecrc_special	2179205
ZX_rescale2prim	2234003
cmp_complex_appr	2238455
fujiwara_bound	2271708
checkbound	2355124
refine_H	2461216
scalepol	4290684
mygprec_absolute	4339485
_mp_mul	4374643
logmax_modulus	4451814
bkeval_single_power	5235526
splitpoleval	5236389
newton_polygon	5510428
X2XP1	5991072
_mp_sqr	6298456
dblexp	6551612
quicktofp	6979460
RgX_gtofp_bit	7035222
abs_update	8008061
mydbllogr	9549946
homothetie2n	9962041
_gen_nored	11206664
eval_rel_pol	13144636
fft	14164670
_gen_one	14474096
ZX_to_ZiX	16452036
pol_to_gaussint	17596404
_mp_add	24665866
_mp_cmul	34777298
myshiftrc	35519467
homothetie_gauss	36506307
lower_bound	40965938
findpower	40966850
graeffe	49528875
mydbllog2r	56189314
mygprec	63777659
ZiX_sqr	99073023
myshiftic	135921624
mygprecrc	215231222
mydbllog2i	226494419
dbllog2	302209901

Generated by: LCOV version 1.16