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 30608-ad1edb9ceb) Lines: 1467 1530 95.9 % Date: 2026-01-13 09:22:00 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15203
_sqrtnr	22596
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48568
realroots	50627
ZX_sturm_irred	116579
ZX_sturm_i	122974
split_pols	166688
polsolve	166691
splitcauchy	166698
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296167
_gen_zero	326010
fix_roots1	398348
conformal_mapping	467786
split_1	467786
split_0_1	468151
split_0_2	468151
logradius	493834
update_radius	493835
parameters	493837
split_fromU	493837
split_2	493838
optimize_split	493839
split_0	494202
refine_F	502225
dft	502228
all_roots	535867
clean_roots	535916
a_posteriori_errors	536974
fix_roots	536974
mygprec_special	536982
logpre_modulus	606534
logmodulus	606536
abs_update_r	778539
ind_maxlog2	902436
isexactscalar	931714
isreal	961622
initdft	996066
dual_modulus	1012185
usp	1125926
ZX_sturmpart	1128238
check_ab	1178865
tocomplex	1213146
isvalidcoeff	1228149
ZX_Uspensky	1313737
conformal_basecase	1403474
conformal_pol	1403593
fujiwara_bound_real	1406715
split_complete	1525376
homothetie	1609602
append_clone	1613485
logmin_modulus	1614329
root_error	1911584
mygprecrc_special	2178248
ZX_rescale2prim	2233510
cmp_complex_appr	2237208
fujiwara_bound	2271001
checkbound	2354860
refine_H	2459923
scalepol	4288153
mygprec_absolute	4337414
_mp_mul	4374524
logmax_modulus	4449489
bkeval_single_power	5234796
splitpoleval	5235197
newton_polygon	5505096
X2XP1	5989813
_mp_sqr	6298182
dblexp	6547187
quicktofp	6976743
RgX_gtofp_bit	7028896
abs_update	8003473
mydbllogr	9544216
homothetie2n	9954332
_gen_nored	11199169
eval_rel_pol	13134127
fft	14154349
_gen_one	14470594
ZX_to_ZiX	16447541
pol_to_gaussint	17583535
_mp_add	24661634
_mp_cmul	34760741
myshiftrc	35494717
homothetie_gauss	36487419
findpower	40943508
lower_bound	40943718
graeffe	49495438
mydbllog2r	56169308
mygprec	63740593
ZiX_sqr	99008366
myshiftic	135804424
mygprecrc	215111735
mydbllog2i	226360266
dbllog2	302020843

Generated by: LCOV version 1.16