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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296166
RgX_gtofp_bit	7028802
RgX_normalize1	35733
X2XP1	5989859
ZX_Uspensky	1313653
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5390
ZX_realroots_irred	48565
ZX_rescale2prim	2233557
ZX_sturm	6395
ZX_sturm_i	122972
ZX_sturm_irred	116577
ZX_sturmpart	1128160
ZX_to_ZiX	16449607
ZiX_sqr	99015314
_gen_nored	11196824
_gen_one	14468368
_gen_zero	325987
_intervalcmp	0
_mp_add	24657592
_mp_cmul	34754649
_mp_mul	4374358
_mp_sqr	6297893
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	536977
abs_update	8003404
abs_update_r	778506
all_roots	535876
append_clone	1613484
bkeval_single_power	5234237
check_ab	1178786
checkbound	2354702
checkvalidpol	266892
clean_roots	535918
cleanroots	231763
cmp_complex_appr	2237240
conformal_basecase	1403455
conformal_mapping	467780
conformal_pol	1403561
dblexp	6547094
dbllog2	302032711
dft	502222
dual_modulus	1012181
eval_rel_pol	13134007
fft	14154609
fft2	7462
findpower	40944738
fix_roots	536975
fix_roots1	398347
fujiwara_bound	2270936
fujiwara_bound_real	1406626
graeffe	49498135
homothetie	1609592
homothetie2n	9954225
homothetie_gauss	36491222
ind_maxlog2	902437
initdft	996056
isexactpol	239753
isexactscalar	931714
isreal	961617
isvalidcoeff	1228149
logmax_modulus	4449510
logmin_modulus	1614332
logmodulus	606528
logpre_modulus	606528
logradius	493833
lower_bound	40944628
mydbllog2i	226375192
mydbllog2r	56168991
mydbllogr	9544098
mygprec	63741294
mygprec_absolute	4337363
mygprec_special	536982
mygprecrc	215120397
mygprecrc_special	2178240
myshiftic	135803017
myshiftrc	35494396
newton_polygon	5505038
optimize_split	493835
parameters	493833
pol_to_gaussint	17583568
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166691
quicktofp	6976608
realroots	50627
refine_F	502217
refine_H	2459918
root_error	1911570
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288087
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494196
split_0_1	468139
split_0_2	468138
split_1	467782
split_2	493834
split_complete	1525368
split_fromU	493835
split_pols	166683
splitcauchy	166698
splitpoleval	5234157
tocomplex	1213142
update_radius	493835
usp	1125908

Generated by: LCOV version 1.16