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 30569-8181146aa1) Lines: 1467 1530 95.9 % Date: 2025-12-02 09:22:09 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296480
RgX_gtofp_bit	7031810
RgX_normalize1	35908
X2XP1	5990192
ZX_Uspensky	1313926
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15272
ZX_graeffe	5390
ZX_realroots_irred	48650
ZX_rescale2prim	2233684
ZX_sturm	6395
ZX_sturm_i	123194
ZX_sturm_irred	116798
ZX_sturmpart	1128261
ZX_to_ZiX	16459268
ZiX_sqr	99031141
_gen_nored	11203532
_gen_one	14473432
_gen_zero	326142
_intervalcmp	0
_mp_add	24662496
_mp_cmul	34765447
_mp_mul	4374458
_mp_sqr	6298252
_mp_sub	0
_sqrtnr	22705
a_posteriori_errors	537288
abs_update	8005463
abs_update_r	778664
all_roots	536188
append_clone	1614317
bkeval_single_power	5235860
check_ab	1178888
checkbound	2354906
checkvalidpol	267067
clean_roots	536233
cleanroots	231763
cmp_complex_appr	2238713
conformal_basecase	1403936
conformal_mapping	467940
conformal_pol	1404053
dblexp	6549317
dbllog2	302118899
dft	502377
dual_modulus	1012482
eval_rel_pol	13138501
fft	14159682
fft2	7462
findpower	40955443
fix_roots	537290
fix_roots1	398485
fujiwara_bound	2271951
fujiwara_bound_real	1406961
graeffe	49508989
homothetie	1610139
homothetie2n	9958039
homothetie_gauss	36498394
ind_maxlog2	902692
initdft	996368
isexactpol	239753
isexactscalar	931714
isreal	961931
isvalidcoeff	1230270
logmax_modulus	4451114
logmin_modulus	1614874
logmodulus	606775
logpre_modulus	606775
logradius	493989
lower_bound	40956237
mydbllog2i	226440759
mydbllog2r	56185743
mydbllogr	9547019
mygprec	63760565
mygprec_absolute	4340594
mygprec_special	537298
mygprecrc	215207496
mygprecrc_special	2179380
myshiftic	135832672
myshiftrc	35508745
newton_polygon	5507355
optimize_split	493994
parameters	493991
pol_to_gaussint	17589441
polgraeffe	14
polmod_to_embed	84
polrootsbound	27307
polrootsbound_i	27300
polsolve	166724
quicktofp	6979562
realroots	50627
refine_F	502370
refine_H	2460597
root_error	1912771
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289516
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494354
split_0_1	468303
split_0_2	468303
split_1	467938
split_2	493987
split_complete	1525994
split_fromU	493993
split_pols	166721
splitcauchy	166727
splitpoleval	5235834
tocomplex	1214169
update_radius	493992
usp	1126061

Generated by: LCOV version 1.16