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
_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	8368
ZX_deg1root	15203
_sqrtnr	22595
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48571
realroots	50627
ZX_sturm_irred	116674
ZX_sturm_i	123069
split_pols	166702
polsolve	166705
splitcauchy	166710
solve_exact_pol	231495
cleanroots	231763
isexactpol	240103
roots_com	240103
roots_aux	240131
checkvalidpol	267214
QX_complex_roots	296309
_gen_zero	326011
fix_roots1	398792
split_1	468778
conformal_mapping	468779
split_0_1	469148
split_0_2	469148
split_2	494928
update_radius	494928
parameters	494929
logradius	494930
optimize_split	494932
split_fromU	494932
split_0	495299
dft	503325
refine_F	503326
all_roots	536367
clean_roots	536412
a_posteriori_errors	537474
fix_roots	537474
mygprec_special	537477
logmodulus	608230
logpre_modulus	608230
abs_update_r	780149
ind_maxlog2	904367
isexactscalar	934017
isreal	963709
initdft	998256
dual_modulus	1014500
usp	1126088
ZX_sturmpart	1128273
check_ab	1178888
tocomplex	1215880
isvalidcoeff	1230445
ZX_Uspensky	1313870
conformal_basecase	1406446
conformal_pol	1406567
fujiwara_bound_real	1406940
split_complete	1528067
homothetie	1613590
append_clone	1616174
logmin_modulus	1617665
root_error	1914443
mygprecrc_special	2181434
ZX_rescale2prim	2233832
cmp_complex_appr	2241531
fujiwara_bound	2271982
checkbound	2354934
refine_H	2464602
scalepol	4297370
mygprec_absolute	4344191
_mp_mul	4374682
logmax_modulus	4458554
bkeval_single_power	5236038
splitpoleval	5236387
newton_polygon	5520845
X2XP1	5990543
_mp_sqr	6298597
dblexp	6562613
quicktofp	6981359
RgX_gtofp_bit	7048154
abs_update	8021374
mydbllogr	9565769
homothetie2n	9979058
_gen_nored	11208441
eval_rel_pol	13168555
fft	14194736
_gen_one	14474680
ZX_to_ZiX	16488872
pol_to_gaussint	17627191
_mp_add	24665919
_mp_cmul	34780157
myshiftrc	35576828
homothetie_gauss	36561997
lower_bound	41029083
findpower	41029203
graeffe	49605924
mydbllog2r	57610338
mygprec	63864158
ZiX_sqr	99222450
myshiftic	136133594
mygprecrc	215564983
mydbllog2i	226878358
dbllog2	304060247

Generated by: LCOV version 1.16