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 30754-316d984fc8) Lines: 1467 1530 95.9 % Date: 2026-03-19 09:26:57 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296310
RgX_gtofp_bit	7047974
RgX_normalize1	35705
X2XP1	5990563
ZX_Uspensky	1313851
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5439
ZX_realroots_irred	48573
ZX_rescale2prim	2233792
ZX_sturm	6395
ZX_sturm_i	123069
ZX_sturm_irred	116674
ZX_sturmpart	1128251
ZX_to_ZiX	16492867
ZiX_sqr	99237298
_gen_nored	11209319
_gen_one	14474521
_gen_zero	326010
_intervalcmp	0
_mp_add	24665558
_mp_cmul	34782451
_mp_mul	4374715
_mp_sqr	6298713
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537469
abs_update	8021410
abs_update_r	780127
all_roots	536372
append_clone	1616155
bkeval_single_power	5236075
check_ab	1178878
checkbound	2354886
checkvalidpol	267214
clean_roots	536409
cleanroots	231763
cmp_complex_appr	2241485
conformal_basecase	1406448
conformal_mapping	468777
conformal_pol	1406568
dblexp	6562542
dbllog2	304082867
dft	503323
dual_modulus	1014492
eval_rel_pol	13168598
fft	14194191
fft2	7462
findpower	41032226
fix_roots	537470
fix_roots1	398788
fujiwara_bound	2271959
fujiwara_bound_real	1406917
graeffe	49610015
homothetie	1613569
homothetie2n	9979012
homothetie_gauss	36565371
ind_maxlog2	904386
initdft	998250
isexactpol	240103
isexactscalar	934017
isreal	963704
isvalidcoeff	1230445
logmax_modulus	4458645
logmin_modulus	1617697
logmodulus	608210
logpre_modulus	608207
logradius	494928
lower_bound	41031763
mydbllog2i	226904023
mydbllog2r	57610432
mydbllogr	9565834
mygprec	63865144
mygprec_absolute	4344242
mygprec_special	537476
mygprecrc	215572446
mygprecrc_special	2181411
myshiftic	136142609
myshiftrc	35576305
newton_polygon	5520684
optimize_split	494931
parameters	494929
pol_to_gaussint	17627202
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166708
quicktofp	6981296
realroots	50627
refine_F	503315
refine_H	2464613
root_error	1914418
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297373
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495300
split_0_1	469147
split_0_2	469147
split_1	468776
split_2	494928
split_complete	1528073
split_fromU	494931
split_pols	166705
splitcauchy	166711
splitpoleval	5236294
tocomplex	1215871
update_radius	494928
usp	1126060

Generated by: LCOV version 1.16