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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296309
RgX_gtofp_bit	7035313
RgX_normalize1	35705
X2XP1	5990696
ZX_Uspensky	1313893
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5439
ZX_realroots_irred	48571
ZX_rescale2prim	2233845
ZX_sturm	6395
ZX_sturm_i	123068
ZX_sturm_irred	116673
ZX_sturmpart	1128296
ZX_to_ZiX	16452102
ZiX_sqr	99067895
_gen_nored	11207718
_gen_one	14474773
_gen_zero	326008
_intervalcmp	0
_mp_add	24666245
_mp_cmul	34778746
_mp_mul	4374638
_mp_sqr	6298563
_mp_sub	0
_sqrtnr	22593
a_posteriori_errors	537112
abs_update	8008847
abs_update_r	779101
all_roots	536016
append_clone	1614331
bkeval_single_power	5235298
check_ab	1178923
checkbound	2354976
checkvalidpol	266864
clean_roots	536060
cleanroots	231763
cmp_complex_appr	2238479
conformal_basecase	1404271
conformal_mapping	468051
conformal_pol	1404386
dblexp	6551590
dbllog2	302192267
dft	502531
dual_modulus	1012840
eval_rel_pol	13144844
fft	14165158
fft2	7462
findpower	40965531
fix_roots	537120
fix_roots1	398481
fujiwara_bound	2271648
fujiwara_bound_real	1406962
graeffe	49527912
homothetie	1610796
homothetie2n	9961971
homothetie_gauss	36505310
ind_maxlog2	903073
initdft	996671
isexactpol	239753
isexactscalar	931714
isreal	962196
isvalidcoeff	1228065
logmax_modulus	4451776
logmin_modulus	1615168
logmodulus	607090
logpre_modulus	607089
logradius	494139
lower_bound	40964946
mydbllog2i	226491706
mydbllog2r	56188818
mydbllogr	9550509
mygprec	63776076
mygprec_absolute	4339632
mygprec_special	537124
mygprecrc	215227539
mygprecrc_special	2179219
myshiftic	135908992
myshiftrc	35518763
newton_polygon	5510466
optimize_split	494146
parameters	494144
pol_to_gaussint	17596587
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166703
quicktofp	6979360
realroots	50627
refine_F	502527
refine_H	2461213
root_error	1912451
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4290674
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494509
split_0_1	468413
split_0_2	468415
split_1	468051
split_2	494141
split_complete	1526133
split_fromU	494146
split_pols	166700
splitcauchy	166707
splitpoleval	5236572
tocomplex	1213838
update_radius	494141
usp	1126100

Generated by: LCOV version 1.16