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 30816-9c15a02229) Lines: 1467 1530 95.9 % Date: 2026-04-15 09:25:30 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296306
RgX_gtofp_bit	7048346
RgX_normalize1	35705
X2XP1	5990859
ZX_Uspensky	1313913
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5439
ZX_realroots_irred	48569
ZX_rescale2prim	2233929
ZX_sturm	6395
ZX_sturm_i	123068
ZX_sturm_irred	116673
ZX_sturmpart	1128310
ZX_to_ZiX	16493683
ZiX_sqr	99224290
_gen_nored	11200849
_gen_one	14470888
_gen_zero	325971
_intervalcmp	0
_mp_add	24661016
_mp_cmul	34762221
_mp_mul	4374467
_mp_sqr	6298332
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	537469
abs_update	8021279
abs_update_r	780138
all_roots	536373
append_clone	1616191
bkeval_single_power	5235058
check_ab	1178939
checkbound	2355008
checkvalidpol	267221
clean_roots	536415
cleanroots	231763
cmp_complex_appr	2241556
conformal_basecase	1406537
conformal_mapping	468809
conformal_pol	1406658
dblexp	6562914
dbllog2	303951694
dft	503345
dual_modulus	1014528
eval_rel_pol	13169000
fft	14194963
fft2	7462
findpower	41030412
fix_roots	537468
fix_roots1	398789
fujiwara_bound	2272861
fujiwara_bound_real	1406990
graeffe	49605190
homothetie	1613639
homothetie2n	9979469
homothetie_gauss	36564305
ind_maxlog2	904396
initdft	998296
isexactpol	240110
isexactscalar	934073
isreal	963758
isvalidcoeff	1230501
logmax_modulus	4458877
logmin_modulus	1617814
logmodulus	608245
logpre_modulus	608243
logradius	494951
lower_bound	41029539
mydbllog2i	226796133
mydbllog2r	57618635
mydbllogr	9565879
mygprec	63863776
mygprec_absolute	4344237
mygprec_special	537477
mygprecrc	215573548
mygprecrc_special	2181451
myshiftic	136080359
myshiftrc	35579012
newton_polygon	5520969
optimize_split	494955
parameters	494951
pol_to_gaussint	17627686
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166713
quicktofp	6984329
realroots	50627
refine_F	503337
refine_H	2464682
root_error	1914445
roots	8375
roots_aux	240138
roots_com	240110
rootsdeg0	42
scalepol	4297613
scalepol2n	0
sol_ok	3378
solve_exact_pol	231502
split_0	495325
split_0_1	469176
split_0_2	469176
split_1	468806
split_2	494950
split_complete	1528115
split_fromU	494953
split_pols	166704
splitcauchy	166711
splitpoleval	5235326
tocomplex	1215903
update_radius	494954
usp	1126112

Generated by: LCOV version 1.16