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 30835-e55edf4b45) Lines: 1467 1530 95.9 % Date: 2026-04-24 09:27:20 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	5439
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15201
_sqrtnr	22594
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48572
realroots	50627
ZX_sturm_irred	116669
ZX_sturm_i	123064
split_pols	166701
polsolve	166704
splitcauchy	166706
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267228
QX_complex_roots	296310
_gen_zero	325981
fix_roots1	398802
conformal_mapping	468813
split_1	468815
split_0_1	469183
split_0_2	469183
logradius	494953
parameters	494960
update_radius	494961
optimize_split	494963
split_2	494963
split_fromU	494963
split_0	495334
refine_F	503360
dft	503364
all_roots	536380
clean_roots	536420
a_posteriori_errors	537481
fix_roots	537483
mygprec_special	537488
logpre_modulus	608267
logmodulus	608273
abs_update_r	780179
ind_maxlog2	904412
isexactscalar	934122
isreal	963777
initdft	998325
dual_modulus	1014553
usp	1126050
ZX_sturmpart	1128305
check_ab	1178931
tocomplex	1215958
isvalidcoeff	1230557
ZX_Uspensky	1313897
conformal_basecase	1406556
conformal_pol	1406676
fujiwara_bound_real	1406980
split_complete	1528144
homothetie	1613684
append_clone	1616240
logmin_modulus	1617799
root_error	1914480
mygprecrc_special	2181503
ZX_rescale2prim	2233747
cmp_complex_appr	2241627
fujiwara_bound	2272866
checkbound	2354992
refine_H	2464707
scalepol	4297645
mygprec_absolute	4344411
_mp_mul	4374382
logmax_modulus	4458878
bkeval_single_power	5234249
splitpoleval	5234535
newton_polygon	5521228
X2XP1	5990431
_mp_sqr	6297954
dblexp	6563024
quicktofp	6984238
RgX_gtofp_bit	7048668
abs_update	8021517
mydbllogr	9566297
homothetie2n	9979728
_gen_nored	11195340
eval_rel_pol	13169508
fft	14196309
_gen_one	14467908
ZX_to_ZiX	16493366
pol_to_gaussint	17628426
_mp_add	24657158
_mp_cmul	34751091
myshiftrc	35579745
homothetie_gauss	36563149
lower_bound	41029910
findpower	41030262
graeffe	49603188
mydbllog2r	57618806
mygprec	63865157
ZiX_sqr	99228389
myshiftic	136061008
mygprecrc	215576516
mydbllog2i	226760482
dbllog2	303898116

Generated by: LCOV version 1.16