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 30586-ccf601f509) Lines: 1467 1530 95.9 % Date: 2025-12-26 09:21:14 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296167
RgX_gtofp_bit	7029035
RgX_normalize1	35733
X2XP1	5989965
ZX_Uspensky	1313731
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15197
ZX_graeffe	5390
ZX_realroots_irred	48546
ZX_rescale2prim	2233626
ZX_sturm	6395
ZX_sturm_i	122962
ZX_sturm_irred	116567
ZX_sturmpart	1128247
ZX_to_ZiX	16447685
ZiX_sqr	99008294
_gen_nored	11194684
_gen_one	14466619
_gen_zero	325921
_intervalcmp	0
_mp_add	24657355
_mp_cmul	34751378
_mp_mul	4374374
_mp_sqr	6297596
_mp_sub	0
_sqrtnr	22585
a_posteriori_errors	536969
abs_update	8003862
abs_update_r	778541
all_roots	535876
append_clone	1613502
bkeval_single_power	5233553
check_ab	1178874
checkbound	2354879
checkvalidpol	266892
clean_roots	535919
cleanroots	231763
cmp_complex_appr	2237262
conformal_basecase	1403458
conformal_mapping	467782
conformal_pol	1403579
dblexp	6547099
dbllog2	302004628
dft	502222
dual_modulus	1012184
eval_rel_pol	13134304
fft	14155002
fft2	7462
findpower	40944525
fix_roots	536980
fix_roots1	398353
fujiwara_bound	2270983
fujiwara_bound_real	1406696
graeffe	49491171
homothetie	1609610
homothetie2n	9954307
homothetie_gauss	36486401
ind_maxlog2	902430
initdft	996055
isexactpol	239753
isexactscalar	931714
isreal	961615
isvalidcoeff	1228149
logmax_modulus	4449393
logmin_modulus	1614296
logmodulus	606543
logpre_modulus	606545
logradius	493828
lower_bound	40943824
mydbllog2i	226358109
mydbllog2r	56168248
mydbllogr	9544843
mygprec	63740051
mygprec_absolute	4337416
mygprec_special	536982
mygprecrc	215111442
mygprecrc_special	2178254
myshiftic	135765237
myshiftrc	35494409
newton_polygon	5505233
optimize_split	493835
parameters	493833
pol_to_gaussint	17583638
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166674
quicktofp	6976600
realroots	50627
refine_F	502214
refine_H	2459917
root_error	1911603
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288112
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494196
split_0_1	468145
split_0_2	468146
split_1	467781
split_2	493833
split_complete	1525364
split_fromU	493835
split_pols	166675
splitcauchy	166681
splitpoleval	5233725
tocomplex	1213156
update_radius	493834
usp	1125910

Generated by: LCOV version 1.16