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 30734-f1f26dedcb) Lines: 1467 1530 95.9 % Date: 2026-03-07 09:24:37 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296312
RgX_gtofp_bit	7035379
RgX_normalize1	35705
X2XP1	5990587
ZX_Uspensky	1313831
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48576
ZX_rescale2prim	2233814
ZX_sturm	6395
ZX_sturm_i	123072
ZX_sturm_irred	116677
ZX_sturmpart	1128229
ZX_to_ZiX	16453690
ZiX_sqr	99073332
_gen_nored	11209401
_gen_one	14476263
_gen_zero	326016
_intervalcmp	0
_mp_add	24665425
_mp_cmul	34781643
_mp_mul	4374668
_mp_sqr	6298727
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	537123
abs_update	8008630
abs_update_r	779093
all_roots	536018
append_clone	1614335
bkeval_single_power	5236270
check_ab	1178856
checkbound	2354842
checkvalidpol	266864
clean_roots	536065
cleanroots	231763
cmp_complex_appr	2238484
conformal_basecase	1404279
conformal_mapping	468055
conformal_pol	1404397
dblexp	6551668
dbllog2	302213711
dft	502524
dual_modulus	1012837
eval_rel_pol	13144925
fft	14166227
fft2	7462
findpower	40965487
fix_roots	537122
fix_roots1	398482
fujiwara_bound	2271588
fujiwara_bound_real	1406902
graeffe	49528845
homothetie	1610804
homothetie2n	9962125
homothetie_gauss	36508784
ind_maxlog2	903065
initdft	996678
isexactpol	239753
isexactscalar	931714
isreal	962202
isvalidcoeff	1228065
logmax_modulus	4451843
logmin_modulus	1615198
logmodulus	607095
logpre_modulus	607096
logradius	494145
lower_bound	40966749
mydbllog2i	226514299
mydbllog2r	56190105
mydbllogr	9550485
mygprec	63776980
mygprec_absolute	4339678
mygprec_special	537123
mygprecrc	215239002
mygprecrc_special	2179220
myshiftic	135909149
myshiftrc	35519621
newton_polygon	5510574
optimize_split	494148
parameters	494147
pol_to_gaussint	17596696
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166710
quicktofp	6979337
realroots	50627
refine_F	502525
refine_H	2461222
root_error	1912472
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4290680
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494512
split_0_1	468416
split_0_2	468416
split_1	468055
split_2	494147
split_complete	1526141
split_fromU	494148
split_pols	166711
splitcauchy	166711
splitpoleval	5236513
tocomplex	1213847
update_radius	494148
usp	1126071

Generated by: LCOV version 1.16