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 30651-3e52073f6d) Lines: 1467 1530 95.9 % Date: 2026-01-28 09:23:10 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296180
RgX_gtofp_bit	7029447
RgX_normalize1	35733
X2XP1	5989706
ZX_Uspensky	1313711
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5390
ZX_realroots_irred	48571
ZX_rescale2prim	2233492
ZX_sturm	6395
ZX_sturm_i	122979
ZX_sturm_irred	116584
ZX_sturmpart	1128205
ZX_to_ZiX	16449555
ZiX_sqr	99021757
_gen_nored	11201492
_gen_one	14473065
_gen_zero	326020
_intervalcmp	0
_mp_add	24661901
_mp_cmul	34767805
_mp_mul	4374506
_mp_sqr	6298427
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	536994
abs_update	8003614
abs_update_r	778572
all_roots	535889
append_clone	1613570
bkeval_single_power	5235814
check_ab	1178833
checkbound	2354796
checkvalidpol	266892
clean_roots	535937
cleanroots	231763
cmp_complex_appr	2237345
conformal_basecase	1403525
conformal_mapping	467806
conformal_pol	1403645
dblexp	6547521
dbllog2	302043372
dft	502245
dual_modulus	1012229
eval_rel_pol	13134932
fft	14155205
fft2	7462
findpower	40947929
fix_roots	536989
fix_roots1	398358
fujiwara_bound	2271127
fujiwara_bound_real	1406683
graeffe	49500034
homothetie	1609687
homothetie2n	9954868
homothetie_gauss	36492472
ind_maxlog2	902479
initdft	996102
isexactpol	239753
isexactscalar	931714
isreal	961662
isvalidcoeff	1228149
logmax_modulus	4449643
logmin_modulus	1614371
logmodulus	606578
logpre_modulus	606581
logradius	493857
lower_bound	40946977
mydbllog2i	226388357
mydbllog2r	56171197
mydbllogr	9544459
mygprec	63743488
mygprec_absolute	4337703
mygprec_special	536996
mygprecrc	215133970
mygprecrc_special	2178330
myshiftic	135806005
myshiftrc	35497044
newton_polygon	5505569
optimize_split	493858
parameters	493856
pol_to_gaussint	17584507
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166699
quicktofp	6977143
realroots	50627
refine_F	502242
refine_H	2460014
root_error	1911675
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288301
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494220
split_0_1	468166
split_0_2	468167
split_1	467804
split_2	493856
split_complete	1525429
split_fromU	493858
split_pols	166697
splitcauchy	166704
splitpoleval	5235471
tocomplex	1213243
update_radius	493857
usp	1125929

Generated by: LCOV version 1.16