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 30733-eb2d773d38) Lines: 1467 1530 95.9 % Date: 2026-03-03 09:24:12 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296310
RgX_gtofp_bit	7035364
RgX_normalize1	35733
X2XP1	5990966
ZX_Uspensky	1313980
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5439
ZX_realroots_irred	48572
ZX_rescale2prim	2233956
ZX_sturm	6395
ZX_sturm_i	123069
ZX_sturm_irred	116674
ZX_sturmpart	1128378
ZX_to_ZiX	16448476
ZiX_sqr	99070182
_gen_nored	11208428
_gen_one	14475599
_gen_zero	326017
_intervalcmp	0
_mp_add	24666225
_mp_cmul	34779461
_mp_mul	4374712
_mp_sqr	6298603
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537119
abs_update	8008461
abs_update_r	779118
all_roots	536016
append_clone	1614324
bkeval_single_power	5235984
check_ab	1179005
checkbound	2355140
checkvalidpol	266892
clean_roots	536066
cleanroots	231763
cmp_complex_appr	2238476
conformal_basecase	1404253
conformal_mapping	468047
conformal_pol	1404373
dblexp	6551586
dbllog2	302213458
dft	502525
dual_modulus	1012838
eval_rel_pol	13144898
fft	14165360
fft2	7462
findpower	40966685
fix_roots	537119
fix_roots1	398479
fujiwara_bound	2271735
fujiwara_bound_real	1407051
graeffe	49526914
homothetie	1610797
homothetie2n	9962004
homothetie_gauss	36504324
ind_maxlog2	903062
initdft	996665
isexactpol	239753
isexactscalar	931714
isreal	962187
isvalidcoeff	1228149
logmax_modulus	4451747
logmin_modulus	1615139
logmodulus	607089
logpre_modulus	607091
logradius	494134
lower_bound	40966433
mydbllog2i	226510288
mydbllog2r	56187958
mydbllogr	9550247
mygprec	63775616
mygprec_absolute	4339641
mygprec_special	537125
mygprecrc	215224803
mygprecrc_special	2179233
myshiftic	135917943
myshiftrc	35519162
newton_polygon	5510528
optimize_split	494141
parameters	494141
pol_to_gaussint	17596721
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166706
quicktofp	6979505
realroots	50627
refine_F	502523
refine_H	2461193
root_error	1912455
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4290631
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494505
split_0_1	468402
split_0_2	468404
split_1	468046
split_2	494142
split_complete	1526129
split_fromU	494141
split_pols	166700
splitcauchy	166710
splitpoleval	5236694
tocomplex	1213847
update_radius	494139
usp	1126160

Generated by: LCOV version 1.16