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 30625-1bbc371a2f) Lines: 1467 1530 95.9 % Date: 2026-01-23 09:24:12 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296169
RgX_gtofp_bit	7028959
RgX_normalize1	35733
X2XP1	5989645
ZX_Uspensky	1313729
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5390
ZX_realroots_irred	48566
ZX_rescale2prim	2233464
ZX_sturm	6395
ZX_sturm_i	122979
ZX_sturm_irred	116583
ZX_sturmpart	1128224
ZX_to_ZiX	16450230
ZiX_sqr	99017538
_gen_nored	11209298
_gen_one	14474673
_gen_zero	326007
_intervalcmp	0
_mp_add	24664699
_mp_cmul	34780744
_mp_mul	4374608
_mp_sqr	6298385
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	536973
abs_update	8003653
abs_update_r	778526
all_roots	535874
append_clone	1613499
bkeval_single_power	5236033
check_ab	1178824
checkbound	2354834
checkvalidpol	266892
clean_roots	535920
cleanroots	231763
cmp_complex_appr	2237240
conformal_basecase	1403447
conformal_mapping	467784
conformal_pol	1403586
dblexp	6547209
dbllog2	302101811
dft	502228
dual_modulus	1012175
eval_rel_pol	13134205
fft	14154882
fft2	7462
findpower	40945975
fix_roots	536979
fix_roots1	398351
fujiwara_bound	2271010
fujiwara_bound_real	1406692
graeffe	49501894
homothetie	1609596
homothetie2n	9954373
homothetie_gauss	36491095
ind_maxlog2	902419
initdft	996067
isexactpol	239753
isexactscalar	931714
isreal	961623
isvalidcoeff	1228149
logmax_modulus	4449518
logmin_modulus	1614344
logmodulus	606543
logpre_modulus	606540
logradius	493837
lower_bound	40946492
mydbllog2i	226407114
mydbllog2r	56171456
mydbllogr	9544413
mygprec	63742361
mygprec_absolute	4337422
mygprec_special	536982
mygprecrc	215129841
mygprecrc_special	2178255
myshiftic	135868838
myshiftrc	35495792
newton_polygon	5505195
optimize_split	493840
parameters	493840
pol_to_gaussint	17583682
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166693
quicktofp	6976687
realroots	50627
refine_F	502227
refine_H	2459921
root_error	1911597
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288141
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494200
split_0_1	468148
split_0_2	468148
split_1	467783
split_2	493839
split_complete	1525384
split_fromU	493840
split_pols	166692
splitcauchy	166700
splitpoleval	5236123
tocomplex	1213132
update_radius	493837
usp	1125910

Generated by: LCOV version 1.16