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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296312
RgX_gtofp_bit	7048795
RgX_normalize1	35705
X2XP1	5990650
ZX_Uspensky	1313846
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15201
ZX_graeffe	5439
ZX_realroots_irred	48571
ZX_rescale2prim	2233838
ZX_sturm	6395
ZX_sturm_i	123048
ZX_sturm_irred	116652
ZX_sturmpart	1128260
ZX_to_ZiX	16489733
ZiX_sqr	99233577
_gen_nored	11192537
_gen_one	14465786
_gen_zero	325929
_intervalcmp	0
_mp_add	24654710
_mp_cmul	34743592
_mp_mul	4374283
_mp_sqr	6298006
_mp_sub	0
_sqrtnr	22592
a_posteriori_errors	537483
abs_update	8021543
abs_update_r	780192
all_roots	536384
append_clone	1616259
bkeval_single_power	5233576
check_ab	1178887
checkbound	2354902
checkvalidpol	267228
clean_roots	536424
cleanroots	231763
cmp_complex_appr	2241653
conformal_basecase	1406559
conformal_mapping	468812
conformal_pol	1406680
dblexp	6563085
dbllog2	303898895
dft	503363
dual_modulus	1014564
eval_rel_pol	13169773
fft	14196450
fft2	7462
findpower	41031801
fix_roots	537486
fix_roots1	398805
fujiwara_bound	2272800
fujiwara_bound_real	1406925
graeffe	49602354
homothetie	1613710
homothetie2n	9979818
homothetie_gauss	36564131
ind_maxlog2	904410
initdft	998327
isexactpol	240117
isexactscalar	934122
isreal	963780
isvalidcoeff	1230557
logmax_modulus	4458855
logmin_modulus	1617786
logmodulus	608284
logpre_modulus	608281
logradius	494962
lower_bound	41029761
mydbllog2i	226758772
mydbllog2r	57616963
mydbllogr	9566343
mygprec	63865899
mygprec_absolute	4344367
mygprec_special	537492
mygprecrc	215576405
mygprecrc_special	2181525
myshiftic	136057360
myshiftrc	35579746
newton_polygon	5521327
optimize_split	494966
parameters	494964
pol_to_gaussint	17628518
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166700
quicktofp	6984151
realroots	50627
refine_F	503358
refine_H	2464736
root_error	1914510
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297711
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495332
split_0_1	469182
split_0_2	469184
split_1	468815
split_2	494964
split_complete	1528147
split_fromU	494965
split_pols	166702
splitcauchy	166709
splitpoleval	5234097
tocomplex	1215964
update_radius	494966
usp	1126068

Generated by: LCOV version 1.16