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 30735-65f72320ad) Lines: 1467 1530 95.9 % Date: 2026-03-15 09:23:45 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	5439
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15203
_sqrtnr	22593
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48571
realroots	50627
ZX_sturm_irred	116673
ZX_sturm_i	123068
split_pols	166700
polsolve	166703
splitcauchy	166707
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266864
QX_complex_roots	296309
_gen_zero	326008
fix_roots1	398481
conformal_mapping	468051
split_1	468051
split_0_1	468413
split_0_2	468415
logradius	494139
split_2	494141
update_radius	494141
parameters	494144
optimize_split	494146
split_fromU	494146
split_0	494509
refine_F	502527
dft	502531
all_roots	536016
clean_roots	536060
a_posteriori_errors	537112
fix_roots	537120
mygprec_special	537124
logpre_modulus	607089
logmodulus	607090
abs_update_r	779101
ind_maxlog2	903073
isexactscalar	931714
isreal	962196
initdft	996671
dual_modulus	1012840
usp	1126100
ZX_sturmpart	1128296
check_ab	1178923
tocomplex	1213838
isvalidcoeff	1228065
ZX_Uspensky	1313893
conformal_basecase	1404271
conformal_pol	1404386
fujiwara_bound_real	1406962
split_complete	1526133
homothetie	1610796
append_clone	1614331
logmin_modulus	1615168
root_error	1912451
mygprecrc_special	2179219
ZX_rescale2prim	2233845
cmp_complex_appr	2238479
fujiwara_bound	2271648
checkbound	2354976
refine_H	2461213
scalepol	4290674
mygprec_absolute	4339632
_mp_mul	4374638
logmax_modulus	4451776
bkeval_single_power	5235298
splitpoleval	5236572
newton_polygon	5510466
X2XP1	5990696
_mp_sqr	6298563
dblexp	6551590
quicktofp	6979360
RgX_gtofp_bit	7035313
abs_update	8008847
mydbllogr	9550509
homothetie2n	9961971
_gen_nored	11207718
eval_rel_pol	13144844
fft	14165158
_gen_one	14474773
ZX_to_ZiX	16452102
pol_to_gaussint	17596587
_mp_add	24666245
_mp_cmul	34778746
myshiftrc	35518763
homothetie_gauss	36505310
lower_bound	40964946
findpower	40965531
graeffe	49527912
mydbllog2r	56188818
mygprec	63776076
ZiX_sqr	99067895
myshiftic	135908992
mygprecrc	215227539
mydbllog2i	226491706
dbllog2	302192267

Generated by: LCOV version 1.16