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

Generated by: LCOV version 1.16