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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296308
RgX_gtofp_bit	7035222
RgX_normalize1	35705
X2XP1	5991072
ZX_Uspensky	1313969
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5439
ZX_realroots_irred	48569
ZX_rescale2prim	2234003
ZX_sturm	6395
ZX_sturm_i	123071
ZX_sturm_irred	116676
ZX_sturmpart	1128370
ZX_to_ZiX	16452036
ZiX_sqr	99073023
_gen_nored	11206664
_gen_one	14474096
_gen_zero	325993
_intervalcmp	0
_mp_add	24665866
_mp_cmul	34777298
_mp_mul	4374643
_mp_sqr	6298456
_mp_sub	0
_sqrtnr	22594
a_posteriori_errors	537117
abs_update	8008061
abs_update_r	779089
all_roots	536014
append_clone	1614315
bkeval_single_power	5235526
check_ab	1178997
checkbound	2355124
checkvalidpol	266864
clean_roots	536057
cleanroots	231763
cmp_complex_appr	2238455
conformal_basecase	1404270
conformal_mapping	468053
conformal_pol	1404392
dblexp	6551612
dbllog2	302209901
dft	502529
dual_modulus	1012819
eval_rel_pol	13144636
fft	14164670
fft2	7462
findpower	40966850
fix_roots	537111
fix_roots1	398475
fujiwara_bound	2271708
fujiwara_bound_real	1407033
graeffe	49528875
homothetie	1610776
homothetie2n	9962041
homothetie_gauss	36506307
ind_maxlog2	903055
initdft	996675
isexactpol	239753
isexactscalar	931714
isreal	962195
isvalidcoeff	1228065
logmax_modulus	4451814
logmin_modulus	1615178
logmodulus	607086
logpre_modulus	607089
logradius	494138
lower_bound	40965938
mydbllog2i	226494419
mydbllog2r	56189314
mydbllogr	9549946
mygprec	63777659
mygprec_absolute	4339485
mygprec_special	537117
mygprecrc	215231222
mygprecrc_special	2179205
myshiftic	135921624
myshiftrc	35519467
newton_polygon	5510428
optimize_split	494144
parameters	494146
pol_to_gaussint	17596404
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166703
quicktofp	6979460
realroots	50627
refine_F	502527
refine_H	2461216
root_error	1912442
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4290684
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494508
split_0_1	468415
split_0_2	468416
split_1	468052
split_2	494143
split_complete	1526131
split_fromU	494144
split_pols	166703
splitcauchy	166712
splitpoleval	5236389
tocomplex	1213827
update_radius	494143
usp	1126150

Generated by: LCOV version 1.16