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 30617-dd5c93fb0e) Lines: 1467 1530 95.9 % Date: 2026-01-21 09:23:33 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15203
_sqrtnr	22597
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48568
realroots	50627
ZX_sturm_irred	116587
ZX_sturm_i	122982
polsolve	166691
split_pols	166693
splitcauchy	166703
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296170
_gen_zero	326034
fix_roots1	398351
conformal_mapping	467784
split_1	467785
split_0_1	468145
split_0_2	468145
logradius	493835
parameters	493840
split_2	493840
update_radius	493840
optimize_split	493841
split_fromU	493841
split_0	494205
refine_F	502222
dft	502227
all_roots	535876
clean_roots	535923
fix_roots	536978
a_posteriori_errors	536981
mygprec_special	536981
logpre_modulus	606541
logmodulus	606543
abs_update_r	778531
ind_maxlog2	902445
isexactscalar	931714
isreal	961625
initdft	996067
dual_modulus	1012198
usp	1125909
ZX_sturmpart	1128221
check_ab	1178848
tocomplex	1213153
isvalidcoeff	1228149
ZX_Uspensky	1313727
conformal_basecase	1403463
conformal_pol	1403582
fujiwara_bound_real	1406695
split_complete	1525386
homothetie	1609613
append_clone	1613505
logmin_modulus	1614314
root_error	1911606
mygprecrc_special	2178266
ZX_rescale2prim	2233540
cmp_complex_appr	2237246
fujiwara_bound	2271024
checkbound	2354826
refine_H	2459925
scalepol	4288150
mygprec_absolute	4337379
_mp_mul	4374505
logmax_modulus	4449462
splitpoleval	5234834
bkeval_single_power	5235137
newton_polygon	5505188
X2XP1	5989767
_mp_sqr	6298217
dblexp	6547179
quicktofp	6976743
RgX_gtofp_bit	7028991
abs_update	8003860
mydbllogr	9544885
homothetie2n	9954285
_gen_nored	11197936
eval_rel_pol	13134218
fft	14155248
_gen_one	14471285
ZX_to_ZiX	16448203
pol_to_gaussint	17583732
_mp_add	24659451
_mp_cmul	34759299
myshiftrc	35494446
homothetie_gauss	36486925
lower_bound	40944651
findpower	40945302
graeffe	49489931
mydbllog2r	56169416
mygprec	63740974
ZiX_sqr	99008290
myshiftic	135772368
mygprecrc	215120268
mydbllog2i	226347995
dbllog2	301992289

Generated by: LCOV version 1.16