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

Generated by: LCOV version 1.16