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 30851-7844d7b3a5) Lines: 1467 1530 95.9 % Date: 2026-05-03 09:26:29 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296326
RgX_gtofp_bit	7048926
RgX_normalize1	35838
X2XP1	5991054
ZX_Uspensky	1313966
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5439
ZX_realroots_irred	48572
ZX_rescale2prim	2233989
ZX_sturm	6395
ZX_sturm_i	123076
ZX_sturm_irred	116681
ZX_sturmpart	1128363
ZX_to_ZiX	16494878
ZiX_sqr	99238475
_gen_nored	11198239
_gen_one	14470987
_gen_zero	326001
_intervalcmp	0
_mp_add	24659163
_mp_cmul	34757022
_mp_mul	4374467
_mp_sqr	6298325
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537502
abs_update	8021543
abs_update_r	780192
all_roots	536396
append_clone	1616304
bkeval_single_power	5235230
check_ab	1178989
checkbound	2355108
checkvalidpol	267361
clean_roots	536444
cleanroots	231763
cmp_complex_appr	2241650
conformal_basecase	1406590
conformal_mapping	468825
conformal_pol	1406710
dblexp	6563248
dbllog2	303924675
dft	503377
dual_modulus	1014582
eval_rel_pol	13169884
fft	14196339
fft2	7462
findpower	41034428
fix_roots	537498
fix_roots1	398818
fujiwara_bound	2274095
fujiwara_bound_real	1407042
graeffe	49606697
homothetie	1613740
homothetie2n	9980182
homothetie_gauss	36567561
ind_maxlog2	904432
initdft	998350
isexactpol	240117
isexactscalar	934122
isreal	963800
isvalidcoeff	1231117
logmax_modulus	4459143
logmin_modulus	1617847
logmodulus	608298
logpre_modulus	608298
logradius	494972
lower_bound	41034065
mydbllog2i	226784593
mydbllog2r	57624948
mydbllogr	9566372
mygprec	63866818
mygprec_absolute	4344571
mygprec_special	537508
mygprecrc	215585917
mygprecrc_special	2181584
myshiftic	136079468
myshiftrc	35581816
newton_polygon	5521442
optimize_split	494976
parameters	494976
pol_to_gaussint	17629000
polgraeffe	14
polmod_to_embed	84
polrootsbound	27237
polrootsbound_i	27230
polsolve	166695
quicktofp	6987961
realroots	50627
refine_F	503373
refine_H	2464787
root_error	1914568
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297762
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495345
split_0_1	469197
split_0_2	469197
split_1	468825
split_2	494976
split_complete	1528184
split_fromU	494976
split_pols	166694
splitcauchy	166709
splitpoleval	5234953
tocomplex	1216021
update_radius	494973
usp	1126184

Generated by: LCOV version 1.16