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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296180
RgX_gtofp_bit	7029379
RgX_normalize1	35733
X2XP1	5990104
ZX_Uspensky	1313741
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5390
ZX_realroots_irred	48566
ZX_rescale2prim	2233675
ZX_sturm	6395
ZX_sturm_i	122976
ZX_sturm_irred	116581
ZX_sturmpart	1128246
ZX_to_ZiX	16451021
ZiX_sqr	99019103
_gen_nored	11202314
_gen_one	14470596
_gen_zero	326006
_intervalcmp	0
_mp_add	24661227
_mp_cmul	34765477
_mp_mul	4374505
_mp_sqr	6298252
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	536992
abs_update	8004301
abs_update_r	778561
all_roots	535893
append_clone	1613560
bkeval_single_power	5234965
check_ab	1178873
checkbound	2354874
checkvalidpol	266892
clean_roots	535929
cleanroots	231763
cmp_complex_appr	2237350
conformal_basecase	1403510
conformal_mapping	467797
conformal_pol	1403631
dblexp	6547443
dbllog2	302056457
dft	502236
dual_modulus	1012228
eval_rel_pol	13134932
fft	14155964
fft2	7462
findpower	40947501
fix_roots	536993
fix_roots1	398360
fujiwara_bound	2271146
fujiwara_bound_real	1406717
graeffe	49499646
homothetie	1609687
homothetie2n	9954783
homothetie_gauss	36492260
ind_maxlog2	902478
initdft	996083
isexactpol	239753
isexactscalar	931714
isreal	961652
isvalidcoeff	1228149
logmax_modulus	4449591
logmin_modulus	1614352
logmodulus	606570
logpre_modulus	606574
logradius	493851
lower_bound	40945597
mydbllog2i	226391042
mydbllog2r	56171213
mydbllogr	9545045
mygprec	63744285
mygprec_absolute	4337661
mygprec_special	536996
mygprecrc	215137202
mygprecrc_special	2178330
myshiftic	135816043
myshiftrc	35496062
newton_polygon	5505512
optimize_split	493853
parameters	493851
pol_to_gaussint	17584425
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166690
quicktofp	6977150
realroots	50627
refine_F	502235
refine_H	2460012
root_error	1911665
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288259
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494216
split_0_1	468162
split_0_2	468163
split_1	467799
split_2	493852
split_complete	1525425
split_fromU	493853
split_pols	166690
splitcauchy	166701
splitpoleval	5235247
tocomplex	1213229
update_radius	493851
usp	1125944

Generated by: LCOV version 1.16