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 30584-b9873745ba) Lines: 1467 1530 95.9 % Date: 2025-12-21 09:21:02 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296169
RgX_gtofp_bit	7029018
RgX_normalize1	35731
X2XP1	5989447
ZX_Uspensky	1313711
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15197
ZX_graeffe	5390
ZX_realroots_irred	48554
ZX_rescale2prim	2233397
ZX_sturm	6395
ZX_sturm_i	122972
ZX_sturm_irred	116577
ZX_sturmpart	1128212
ZX_to_ZiX	16448568
ZiX_sqr	99010759
_gen_nored	11196509
_gen_one	14468111
_gen_zero	325927
_intervalcmp	0
_mp_add	24656927
_mp_cmul	34752790
_mp_mul	4374343
_mp_sqr	6297717
_mp_sub	0
_sqrtnr	22589
a_posteriori_errors	536979
abs_update	8003397
abs_update_r	778531
all_roots	535880
append_clone	1613506
bkeval_single_power	5233890
check_ab	1178841
checkbound	2354811
checkvalidpol	266890
clean_roots	535927
cleanroots	231763
cmp_complex_appr	2237239
conformal_basecase	1403470
conformal_mapping	467786
conformal_pol	1403589
dblexp	6547197
dbllog2	302014252
dft	502223
dual_modulus	1012179
eval_rel_pol	13134169
fft	14154603
fft2	7462
findpower	40944108
fix_roots	536978
fix_roots1	398349
fujiwara_bound	2270976
fujiwara_bound_real	1406666
graeffe	49491850
homothetie	1609599
homothetie2n	9954349
homothetie_gauss	36486373
ind_maxlog2	902426
initdft	996062
isexactpol	239753
isexactscalar	931714
isreal	961623
isvalidcoeff	1228143
logmax_modulus	4449500
logmin_modulus	1614335
logmodulus	606543
logpre_modulus	606543
logradius	493835
lower_bound	40944098
mydbllog2i	226365972
mydbllog2r	56169607
mydbllogr	9544431
mygprec	63740632
mygprec_absolute	4337355
mygprec_special	536986
mygprecrc	215116859
mygprecrc_special	2178261
myshiftic	135767903
myshiftrc	35495307
newton_polygon	5505225
optimize_split	493838
parameters	493837
pol_to_gaussint	17583602
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166681
quicktofp	6976511
realroots	50627
refine_F	502219
refine_H	2459911
root_error	1911604
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288142
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494200
split_0_1	468144
split_0_2	468144
split_1	467781
split_2	493836
split_complete	1525376
split_fromU	493838
split_pols	166676
splitcauchy	166690
splitpoleval	5234195
tocomplex	1213156
update_radius	493838
usp	1125847

Generated by: LCOV version 1.16