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 30657-d14c2a9e4e) Lines: 1467 1530 95.9 % Date: 2026-01-29 09:23:20 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15203
_sqrtnr	22595
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48566
realroots	50627
ZX_sturm_irred	116581
ZX_sturm_i	122976
polsolve	166690
split_pols	166690
splitcauchy	166701
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296180
_gen_zero	326006
fix_roots1	398360
conformal_mapping	467797
split_1	467799
split_0_1	468162
split_0_2	468163
logradius	493851
parameters	493851
update_radius	493851
split_2	493852
optimize_split	493853
split_fromU	493853
split_0	494216
refine_F	502235
dft	502236
all_roots	535893
clean_roots	535929
a_posteriori_errors	536992
fix_roots	536993
mygprec_special	536996
logmodulus	606570
logpre_modulus	606574
abs_update_r	778561
ind_maxlog2	902478
isexactscalar	931714
isreal	961652
initdft	996083
dual_modulus	1012228
usp	1125944
ZX_sturmpart	1128246
check_ab	1178873
tocomplex	1213229
isvalidcoeff	1228149
ZX_Uspensky	1313741
conformal_basecase	1403510
conformal_pol	1403631
fujiwara_bound_real	1406717
split_complete	1525425
homothetie	1609687
append_clone	1613560
logmin_modulus	1614352
root_error	1911665
mygprecrc_special	2178330
ZX_rescale2prim	2233675
cmp_complex_appr	2237350
fujiwara_bound	2271146
checkbound	2354874
refine_H	2460012
scalepol	4288259
mygprec_absolute	4337661
_mp_mul	4374505
logmax_modulus	4449591
bkeval_single_power	5234965
splitpoleval	5235247
newton_polygon	5505512
X2XP1	5990104
_mp_sqr	6298252
dblexp	6547443
quicktofp	6977150
RgX_gtofp_bit	7029379
abs_update	8004301
mydbllogr	9545045
homothetie2n	9954783
_gen_nored	11202314
eval_rel_pol	13134932
fft	14155964
_gen_one	14470596
ZX_to_ZiX	16451021
pol_to_gaussint	17584425
_mp_add	24661227
_mp_cmul	34765477
myshiftrc	35496062
homothetie_gauss	36492260
lower_bound	40945597
findpower	40947501
graeffe	49499646
mydbllog2r	56171213
mygprec	63744285
ZiX_sqr	99019103
myshiftic	135816043
mygprecrc	215137202
mydbllog2i	226391042
dbllog2	302056457

Generated by: LCOV version 1.16