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 30634-7c77b4d1a9) Lines: 1467 1530 95.9 % Date: 2026-01-26 09:23:16 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	15204
_sqrtnr	22597
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48565
realroots	50627
ZX_sturm_irred	116577
ZX_sturm_i	122972
split_pols	166683
polsolve	166691
splitcauchy	166698
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296166
_gen_zero	325987
fix_roots1	398347
conformal_mapping	467780
split_1	467782
split_0_2	468138
split_0_1	468139
logradius	493833
parameters	493833
split_2	493834
optimize_split	493835
split_fromU	493835
update_radius	493835
split_0	494196
refine_F	502217
dft	502222
all_roots	535876
clean_roots	535918
fix_roots	536975
a_posteriori_errors	536977
mygprec_special	536982
logmodulus	606528
logpre_modulus	606528
abs_update_r	778506
ind_maxlog2	902437
isexactscalar	931714
isreal	961617
initdft	996056
dual_modulus	1012181
usp	1125908
ZX_sturmpart	1128160
check_ab	1178786
tocomplex	1213142
isvalidcoeff	1228149
ZX_Uspensky	1313653
conformal_basecase	1403455
conformal_pol	1403561
fujiwara_bound_real	1406626
split_complete	1525368
homothetie	1609592
append_clone	1613484
logmin_modulus	1614332
root_error	1911570
mygprecrc_special	2178240
ZX_rescale2prim	2233557
cmp_complex_appr	2237240
fujiwara_bound	2270936
checkbound	2354702
refine_H	2459918
scalepol	4288087
mygprec_absolute	4337363
_mp_mul	4374358
logmax_modulus	4449510
splitpoleval	5234157
bkeval_single_power	5234237
newton_polygon	5505038
X2XP1	5989859
_mp_sqr	6297893
dblexp	6547094
quicktofp	6976608
RgX_gtofp_bit	7028802
abs_update	8003404
mydbllogr	9544098
homothetie2n	9954225
_gen_nored	11196824
eval_rel_pol	13134007
fft	14154609
_gen_one	14468368
ZX_to_ZiX	16449607
pol_to_gaussint	17583568
_mp_add	24657592
_mp_cmul	34754649
myshiftrc	35494396
homothetie_gauss	36491222
lower_bound	40944628
findpower	40944738
graeffe	49498135
mydbllog2r	56168991
mygprec	63741294
ZiX_sqr	99015314
myshiftic	135803017
mygprecrc	215120397
mydbllog2i	226375192
dbllog2	302032711

Generated by: LCOV version 1.16