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 30674-be81ecfdd4) Lines: 1467 1530 95.9 % Date: 2026-02-10 09:23:17 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296182
RgX_gtofp_bit	7029567
RgX_normalize1	35733
X2XP1	5989737
ZX_Uspensky	1313655
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5390
ZX_realroots_irred	48569
ZX_rescale2prim	2233513
ZX_sturm	6395
ZX_sturm_i	122979
ZX_sturm_irred	116584
ZX_sturmpart	1128155
ZX_to_ZiX	16449193
ZiX_sqr	99018674
_gen_nored	11203146
_gen_one	14472543
_gen_zero	326012
_intervalcmp	0
_mp_add	24662221
_mp_cmul	34769676
_mp_mul	4374505
_mp_sqr	6298246
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	536983
abs_update	8003998
abs_update_r	778599
all_roots	535889
append_clone	1613565
bkeval_single_power	5235534
check_ab	1178782
checkbound	2354691
checkvalidpol	266892
clean_roots	535933
cleanroots	231763
cmp_complex_appr	2237382
conformal_basecase	1403539
conformal_mapping	467809
conformal_pol	1403657
dblexp	6547625
dbllog2	302058615
dft	502252
dual_modulus	1012247
eval_rel_pol	13135210
fft	14155959
fft2	7462
findpower	40947588
fix_roots	536988
fix_roots1	398358
fujiwara_bound	2271072
fujiwara_bound_real	1406631
graeffe	49499235
homothetie	1609717
homothetie2n	9955089
homothetie_gauss	36493554
ind_maxlog2	902485
initdft	996117
isexactpol	239753
isexactscalar	931714
isreal	961675
isvalidcoeff	1228149
logmax_modulus	4449711
logmin_modulus	1614383
logmodulus	606591
logpre_modulus	606590
logradius	493864
lower_bound	40947635
mydbllog2i	226390851
mydbllog2r	56172397
mydbllogr	9544864
mygprec	63745541
mygprec_absolute	4337701
mygprec_special	536995
mygprecrc	215133088
mygprecrc_special	2178344
myshiftic	135831186
myshiftrc	35498103
newton_polygon	5505640
optimize_split	493865
parameters	493865
pol_to_gaussint	17584905
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166697
quicktofp	6977105
realroots	50627
refine_F	502250
refine_H	2460070
root_error	1911679
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288361
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494229
split_0_1	468174
split_0_2	468174
split_1	467810
split_2	493864
split_complete	1525445
split_fromU	493865
split_pols	166698
splitcauchy	166699
splitpoleval	5235566
tocomplex	1213249
update_radius	493865
usp	1125899

Generated by: LCOV version 1.16