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 30835-e55edf4b45) Lines: 1467 1530 95.9 % Date: 2026-04-25 09:26:46 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296303
RgX_gtofp_bit	7048669
RgX_normalize1	35705
X2XP1	5990975
ZX_Uspensky	1313980
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5439
ZX_realroots_irred	48574
ZX_rescale2prim	2233961
ZX_sturm	6395
ZX_sturm_i	123073
ZX_sturm_irred	116678
ZX_sturmpart	1128381
ZX_to_ZiX	16494604
ZiX_sqr	99231078
_gen_nored	11199762
_gen_one	14472211
_gen_zero	325998
_intervalcmp	0
_mp_add	24660582
_mp_cmul	34762250
_mp_mul	4374530
_mp_sqr	6298366
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	537481
abs_update	8021933
abs_update_r	780162
all_roots	536376
append_clone	1616242
bkeval_single_power	5234861
check_ab	1179008
checkbound	2355145
checkvalidpol	267228
clean_roots	536420
cleanroots	231763
cmp_complex_appr	2241598
conformal_basecase	1406564
conformal_mapping	468819
conformal_pol	1406683
dblexp	6563082
dbllog2	303904880
dft	503364
dual_modulus	1014561
eval_rel_pol	13169646
fft	14196505
fft2	7462
findpower	41030594
fix_roots	537478
fix_roots1	398801
fujiwara_bound	2272951
fujiwara_bound_real	1407067
graeffe	49603293
homothetie	1613704
homothetie2n	9979790
homothetie_gauss	36563799
ind_maxlog2	904413
initdft	998326
isexactpol	240117
isexactscalar	934122
isreal	963782
isvalidcoeff	1230557
logmax_modulus	4458905
logmin_modulus	1617811
logmodulus	608275
logpre_modulus	608273
logradius	494960
lower_bound	41030361
mydbllog2i	226763666
mydbllog2r	57620330
mydbllogr	9566715
mygprec	63865848
mygprec_absolute	4344353
mygprec_special	537485
mygprecrc	215586934
mygprecrc_special	2181497
myshiftic	136059146
myshiftrc	35579792
newton_polygon	5521220
optimize_split	494964
parameters	494963
pol_to_gaussint	17628558
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166709
quicktofp	6984605
realroots	50627
refine_F	503361
refine_H	2464725
root_error	1914496
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297715
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495334
split_0_1	469189
split_0_2	469189
split_1	468818
split_2	494963
split_complete	1528146
split_fromU	494964
split_pols	166709
splitcauchy	166715
splitpoleval	5235292
tocomplex	1215956
update_radius	494962
usp	1126164

Generated by: LCOV version 1.16