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 30759-17b423fb9b) Lines: 1467 1530 95.9 % Date: 2026-03-21 09:26:11 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	7048154
RgX_normalize1	35705
X2XP1	5990543
ZX_Uspensky	1313870
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	2233832
ZX_sturm	6395
ZX_sturm_i	123069
ZX_sturm_irred	116674
ZX_sturmpart	1128273
ZX_to_ZiX	16488872
ZiX_sqr	99222450
_gen_nored	11208441
_gen_one	14474680
_gen_zero	326011
_intervalcmp	0
_mp_add	24665919
_mp_cmul	34780157
_mp_mul	4374682
_mp_sqr	6298597
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	537474
abs_update	8021374
abs_update_r	780149
all_roots	536367
append_clone	1616174
bkeval_single_power	5236038
check_ab	1178888
checkbound	2354934
checkvalidpol	267214
clean_roots	536412
cleanroots	231763
cmp_complex_appr	2241531
conformal_basecase	1406446
conformal_mapping	468779
conformal_pol	1406567
dblexp	6562613
dbllog2	304060247
dft	503325
dual_modulus	1014500
eval_rel_pol	13168555
fft	14194736
fft2	7462
findpower	41029203
fix_roots	537474
fix_roots1	398792
fujiwara_bound	2271982
fujiwara_bound_real	1406940
graeffe	49605924
homothetie	1613590
homothetie2n	9979058
homothetie_gauss	36561997
ind_maxlog2	904367
initdft	998256
isexactpol	240103
isexactscalar	934017
isreal	963709
isvalidcoeff	1230445
logmax_modulus	4458554
logmin_modulus	1617665
logmodulus	608230
logpre_modulus	608230
logradius	494930
lower_bound	41029083
mydbllog2i	226878358
mydbllog2r	57610338
mydbllogr	9565769
mygprec	63864158
mygprec_absolute	4344191
mygprec_special	537477
mygprecrc	215564983
mygprecrc_special	2181434
myshiftic	136133594
myshiftrc	35576828
newton_polygon	5520845
optimize_split	494932
parameters	494929
pol_to_gaussint	17627191
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166705
quicktofp	6981359
realroots	50627
refine_F	503326
refine_H	2464602
root_error	1914443
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297370
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495299
split_0_1	469148
split_0_2	469148
split_1	468778
split_2	494928
split_complete	1528067
split_fromU	494932
split_pols	166702
splitcauchy	166710
splitpoleval	5236387
tocomplex	1215880
update_radius	494928
usp	1126088

Generated by: LCOV version 1.16