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 30838-aa3635ec72) Lines: 1467 1530 95.9 % Date: 2026-04-28 09:25:50 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	8382
ZX_deg1root	15201
_sqrtnr	22592
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48571
realroots	50627
ZX_sturm_irred	116652
ZX_sturm_i	123048
polsolve	166700
split_pols	166702
splitcauchy	166709
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267228
QX_complex_roots	296312
_gen_zero	325929
fix_roots1	398805
conformal_mapping	468812
split_1	468815
split_0_1	469182
split_0_2	469184
logradius	494962
parameters	494964
split_2	494964
split_fromU	494965
optimize_split	494966
update_radius	494966
split_0	495332
refine_F	503358
dft	503363
all_roots	536384
clean_roots	536424
a_posteriori_errors	537483
fix_roots	537486
mygprec_special	537492
logpre_modulus	608281
logmodulus	608284
abs_update_r	780192
ind_maxlog2	904410
isexactscalar	934122
isreal	963780
initdft	998327
dual_modulus	1014564
usp	1126068
ZX_sturmpart	1128260
check_ab	1178887
tocomplex	1215964
isvalidcoeff	1230557
ZX_Uspensky	1313846
conformal_basecase	1406559
conformal_pol	1406680
fujiwara_bound_real	1406925
split_complete	1528147
homothetie	1613710
append_clone	1616259
logmin_modulus	1617786
root_error	1914510
mygprecrc_special	2181525
ZX_rescale2prim	2233838
cmp_complex_appr	2241653
fujiwara_bound	2272800
checkbound	2354902
refine_H	2464736
scalepol	4297711
mygprec_absolute	4344367
_mp_mul	4374283
logmax_modulus	4458855
bkeval_single_power	5233576
splitpoleval	5234097
newton_polygon	5521327
X2XP1	5990650
_mp_sqr	6298006
dblexp	6563085
quicktofp	6984151
RgX_gtofp_bit	7048795
abs_update	8021543
mydbllogr	9566343
homothetie2n	9979818
_gen_nored	11192537
eval_rel_pol	13169773
fft	14196450
_gen_one	14465786
ZX_to_ZiX	16489733
pol_to_gaussint	17628518
_mp_add	24654710
_mp_cmul	34743592
myshiftrc	35579746
homothetie_gauss	36564131
lower_bound	41029761
findpower	41031801
graeffe	49602354
mydbllog2r	57616963
mygprec	63865899
ZiX_sqr	99233577
myshiftic	136057360
mygprecrc	215576405
mydbllog2i	226758772
dbllog2	303898895

Generated by: LCOV version 1.16