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 30674-be81ecfdd4) Lines: 1467 1530 95.9 % Date: 2026-02-09 09:23:39 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296181
RgX_gtofp_bit	7029543
RgX_normalize1	35733
X2XP1	5989946
ZX_Uspensky	1313710
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5390
ZX_realroots_irred	48569
ZX_rescale2prim	2233591
ZX_sturm	6395
ZX_sturm_i	122979
ZX_sturm_irred	116583
ZX_sturmpart	1128210
ZX_to_ZiX	16454288
ZiX_sqr	99019959
_gen_nored	11203923
_gen_one	14472021
_gen_zero	326028
_intervalcmp	0
_mp_add	24662037
_mp_cmul	34770283
_mp_mul	4374463
_mp_sqr	6298213
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	536990
abs_update	8004285
abs_update_r	778547
all_roots	535889
append_clone	1613571
bkeval_single_power	5235518
check_ab	1178837
checkbound	2354806
checkvalidpol	266892
clean_roots	535934
cleanroots	231763
cmp_complex_appr	2237364
conformal_basecase	1403565
conformal_mapping	467819
conformal_pol	1403683
dblexp	6547717
dbllog2	302100974
dft	502259
dual_modulus	1012260
eval_rel_pol	13135309
fft	14156450
fft2	7462
findpower	40948607
fix_roots	536993
fix_roots1	398361
fujiwara_bound	2271124
fujiwara_bound_real	1406683
graeffe	49503031
homothetie	1609733
homothetie2n	9955188
homothetie_gauss	36495208
ind_maxlog2	902507
initdft	996127
isexactpol	239753
isexactscalar	931714
isreal	961685
isvalidcoeff	1228149
logmax_modulus	4449836
logmin_modulus	1614468
logmodulus	606588
logpre_modulus	606589
logradius	493865
lower_bound	40948979
mydbllog2i	226414151
mydbllog2r	56173882
mydbllogr	9545156
mygprec	63746866
mygprec_absolute	4337702
mygprec_special	536997
mygprecrc	215153811
mygprecrc_special	2178347
myshiftic	135857984
myshiftrc	35497950
newton_polygon	5505619
optimize_split	493868
parameters	493867
pol_to_gaussint	17585081
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166693
quicktofp	6977193
realroots	50627
refine_F	502257
refine_H	2460084
root_error	1911692
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288442
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494231
split_0_1	468183
split_0_2	468183
split_1	467818
split_2	493868
split_complete	1525451
split_fromU	493868
split_pols	166700
splitcauchy	166698
splitpoleval	5235554
tocomplex	1213235
update_radius	493870
usp	1125938

Generated by: LCOV version 1.16