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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296310
RgX_gtofp_bit	7048668
RgX_normalize1	35705
X2XP1	5990431
ZX_Uspensky	1313897
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15201
ZX_graeffe	5439
ZX_realroots_irred	48572
ZX_rescale2prim	2233747
ZX_sturm	6395
ZX_sturm_i	123064
ZX_sturm_irred	116669
ZX_sturmpart	1128305
ZX_to_ZiX	16493366
ZiX_sqr	99228389
_gen_nored	11195340
_gen_one	14467908
_gen_zero	325981
_intervalcmp	0
_mp_add	24657158
_mp_cmul	34751091
_mp_mul	4374382
_mp_sqr	6297954
_mp_sub	0
_sqrtnr	22594
a_posteriori_errors	537481
abs_update	8021517
abs_update_r	780179
all_roots	536380
append_clone	1616240
bkeval_single_power	5234249
check_ab	1178931
checkbound	2354992
checkvalidpol	267228
clean_roots	536420
cleanroots	231763
cmp_complex_appr	2241627
conformal_basecase	1406556
conformal_mapping	468813
conformal_pol	1406676
dblexp	6563024
dbllog2	303898116
dft	503364
dual_modulus	1014553
eval_rel_pol	13169508
fft	14196309
fft2	7462
findpower	41030262
fix_roots	537483
fix_roots1	398802
fujiwara_bound	2272866
fujiwara_bound_real	1406980
graeffe	49603188
homothetie	1613684
homothetie2n	9979728
homothetie_gauss	36563149
ind_maxlog2	904412
initdft	998325
isexactpol	240117
isexactscalar	934122
isreal	963777
isvalidcoeff	1230557
logmax_modulus	4458878
logmin_modulus	1617799
logmodulus	608273
logpre_modulus	608267
logradius	494953
lower_bound	41029910
mydbllog2i	226760482
mydbllog2r	57618806
mydbllogr	9566297
mygprec	63865157
mygprec_absolute	4344411
mygprec_special	537488
mygprecrc	215576516
mygprecrc_special	2181503
myshiftic	136061008
myshiftrc	35579745
newton_polygon	5521228
optimize_split	494963
parameters	494960
pol_to_gaussint	17628426
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166704
quicktofp	6984238
realroots	50627
refine_F	503360
refine_H	2464707
root_error	1914480
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297645
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495334
split_0_1	469183
split_0_2	469183
split_1	468815
split_2	494963
split_complete	1528144
split_fromU	494963
split_pols	166701
splitcauchy	166706
splitpoleval	5234535
tocomplex	1215958
update_radius	494961
usp	1126050

Generated by: LCOV version 1.16