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 30802-b11b770002) Lines: 1467 1530 95.9 % Date: 2026-04-12 09:26:48 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296313
RgX_gtofp_bit	7048277
RgX_normalize1	35705
X2XP1	5991235
ZX_Uspensky	1313993
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48576
ZX_rescale2prim	2234064
ZX_sturm	6395
ZX_sturm_i	123069
ZX_sturm_irred	116674
ZX_sturmpart	1128391
ZX_to_ZiX	16490509
ZiX_sqr	99224812
_gen_nored	11197055
_gen_one	14471801
_gen_zero	325982
_intervalcmp	0
_mp_add	24660822
_mp_cmul	34756795
_mp_mul	4374498
_mp_sqr	6298343
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	537476
abs_update	8020756
abs_update_r	780142
all_roots	536373
append_clone	1616196
bkeval_single_power	5235430
check_ab	1179018
checkbound	2355166
checkvalidpol	267214
clean_roots	536416
cleanroots	231763
cmp_complex_appr	2241519
conformal_basecase	1406477
conformal_mapping	468787
conformal_pol	1406597
dblexp	6562638
dbllog2	303996607
dft	503330
dual_modulus	1014497
eval_rel_pol	13168812
fft	14194693
fft2	7462
findpower	41030766
fix_roots	537479
fix_roots1	398797
fujiwara_bound	2272120
fujiwara_bound_real	1407065
graeffe	49602043
homothetie	1613595
homothetie2n	9979197
homothetie_gauss	36561346
ind_maxlog2	904369
initdft	998266
isexactpol	240103
isexactscalar	934017
isreal	963722
isvalidcoeff	1230445
logmax_modulus	4458664
logmin_modulus	1617733
logmodulus	608235
logpre_modulus	608233
logradius	494935
lower_bound	41030077
mydbllog2i	226850852
mydbllog2r	57612181
mydbllogr	9565366
mygprec	63861742
mygprec_absolute	4344157
mygprec_special	537478
mygprecrc	215569028
mygprecrc_special	2181439
myshiftic	136064170
myshiftrc	35577993
newton_polygon	5520904
optimize_split	494935
parameters	494937
pol_to_gaussint	17627537
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166703
quicktofp	6981730
realroots	50627
refine_F	503324
refine_H	2464637
root_error	1914418
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297400
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495305
split_0_1	469154
split_0_2	469154
split_1	468787
split_2	494936
split_complete	1528081
split_fromU	494936
split_pols	166702
splitcauchy	166716
splitpoleval	5235409
tocomplex	1215888
update_radius	494934
usp	1126211

Generated by: LCOV version 1.16