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 30831-19b50a36d0) Lines: 1467 1530 95.9 % Date: 2026-04-21 09:26:02 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296309
RgX_gtofp_bit	7048794
RgX_normalize1	35705
X2XP1	5990880
ZX_Uspensky	1313835
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5439
ZX_realroots_irred	48571
ZX_rescale2prim	2233960
ZX_sturm	6395
ZX_sturm_i	123066
ZX_sturm_irred	116671
ZX_sturmpart	1128244
ZX_to_ZiX	16490044
ZiX_sqr	99218461
_gen_nored	11200192
_gen_one	14469597
_gen_zero	325950
_intervalcmp	0
_mp_add	24660561
_mp_cmul	34762503
_mp_mul	4374486
_mp_sqr	6298110
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537478
abs_update	8021521
abs_update_r	780197
all_roots	536376
append_clone	1616258
bkeval_single_power	5234748
check_ab	1178873
checkbound	2354873
checkvalidpol	267228
clean_roots	536424
cleanroots	231763
cmp_complex_appr	2241583
conformal_basecase	1406547
conformal_mapping	468810
conformal_pol	1406668
dblexp	6563038
dbllog2	303914889
dft	503360
dual_modulus	1014554
eval_rel_pol	13169572
fft	14196469
fft2	7462
findpower	41027416
fix_roots	537476
fix_roots1	398802
fujiwara_bound	2272788
fujiwara_bound_real	1406915
graeffe	49604042
homothetie	1613700
homothetie2n	9979794
homothetie_gauss	36563932
ind_maxlog2	904391
initdft	998324
isexactpol	240117
isexactscalar	934122
isreal	963774
isvalidcoeff	1230557
logmax_modulus	4458799
logmin_modulus	1617774
logmodulus	608288
logpre_modulus	608283
logradius	494964
lower_bound	41028490
mydbllog2i	226769121
mydbllog2r	57617832
mydbllogr	9566225
mygprec	63864978
mygprec_absolute	4344384
mygprec_special	537486
mygprecrc	215565083
mygprecrc_special	2181524
myshiftic	136085833
myshiftrc	35580099
newton_polygon	5521343
optimize_split	494966
parameters	494964
pol_to_gaussint	17628354
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166703
quicktofp	6984256
realroots	50627
refine_F	503353
refine_H	2464718
root_error	1914517
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297676
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495337
split_0_1	469181
split_0_2	469181
split_1	468811
split_2	494963
split_complete	1528153
split_fromU	494965
split_pols	166703
splitcauchy	166711
splitpoleval	5234866
tocomplex	1215965
update_radius	494961
usp	1126086

Generated by: LCOV version 1.16