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 30586-ccf601f509) Lines: 1467 1530 95.9 % Date: 2025-12-25 09:21:36 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296164
RgX_gtofp_bit	7028989
RgX_normalize1	35732
X2XP1	5990108
ZX_Uspensky	1313801
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15195
ZX_graeffe	5390
ZX_realroots_irred	48553
ZX_rescale2prim	2233652
ZX_sturm	6395
ZX_sturm_i	122973
ZX_sturm_irred	116578
ZX_sturmpart	1128311
ZX_to_ZiX	16447576
ZiX_sqr	99007299
_gen_nored	11202692
_gen_one	14472532
_gen_zero	325953
_intervalcmp	0
_mp_add	24662081
_mp_cmul	34767858
_mp_mul	4374598
_mp_sqr	6298111
_mp_sub	0
_sqrtnr	22588
a_posteriori_errors	536978
abs_update	8003471
abs_update_r	778541
all_roots	535876
append_clone	1613500
bkeval_single_power	5235222
check_ab	1178938
checkbound	2355006
checkvalidpol	266891
clean_roots	535924
cleanroots	231763
cmp_complex_appr	2237280
conformal_basecase	1403457
conformal_mapping	467782
conformal_pol	1403575
dblexp	6547079
dbllog2	302004344
dft	502219
dual_modulus	1012163
eval_rel_pol	13134076
fft	14154807
fft2	7462
findpower	40943657
fix_roots	536978
fix_roots1	398350
fujiwara_bound	2271066
fujiwara_bound_real	1406768
graeffe	49491859
homothetie	1609589
homothetie2n	9954242
homothetie_gauss	36485404
ind_maxlog2	902406
initdft	996047
isexactpol	239753
isexactscalar	931714
isreal	961609
isvalidcoeff	1228140
logmax_modulus	4449388
logmin_modulus	1614283
logmodulus	606540
logpre_modulus	606538
logradius	493820
lower_bound	40943150
mydbllog2i	226358910
mydbllog2r	56169117
mydbllogr	9544444
mygprec	63739361
mygprec_absolute	4337357
mygprec_special	536982
mygprecrc	215111708
mygprecrc_special	2178245
myshiftic	135771939
myshiftrc	35494524
newton_polygon	5505178
optimize_split	493828
parameters	493829
pol_to_gaussint	17583445
polgraeffe	14
polmod_to_embed	84
polrootsbound	27131
polrootsbound_i	27124
polsolve	166680
quicktofp	6976884
realroots	50627
refine_F	502212
refine_H	2459872
root_error	1911602
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288086
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494190
split_0_1	468140
split_0_2	468141
split_1	467781
split_2	493829
split_complete	1525362
split_fromU	493828
split_pols	166675
splitcauchy	166686
splitpoleval	5235235
tocomplex	1213153
update_radius	493827
usp	1125993

Generated by: LCOV version 1.16