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 30605-980f9eb85c) Lines: 1467 1530 95.9 % Date: 2026-01-12 09:21:57 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15200
_sqrtnr	22595
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48562
realroots	50627
ZX_sturm_irred	116582
ZX_sturm_i	122977
split_pols	166690
polsolve	166696
splitcauchy	166697
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296159
_gen_zero	326007
fix_roots1	398344
split_1	467766
conformal_mapping	467767
split_0_1	468132
split_0_2	468132
logradius	493819
split_2	493820
update_radius	493821
optimize_split	493824
parameters	493824
split_fromU	493824
split_0	494189
refine_F	502212
dft	502213
all_roots	535867
clean_roots	535913
fix_roots	536967
a_posteriori_errors	536974
mygprec_special	536975
logpre_modulus	606534
logmodulus	606537
abs_update_r	778541
ind_maxlog2	902386
isexactscalar	931714
isreal	961590
initdft	996021
dual_modulus	1012153
usp	1125975
ZX_sturmpart	1128262
check_ab	1178890
tocomplex	1213132
isvalidcoeff	1228149
ZX_Uspensky	1313758
conformal_basecase	1403413
conformal_pol	1403531
fujiwara_bound_real	1406749
split_complete	1525345
homothetie	1609564
append_clone	1613476
logmin_modulus	1614247
root_error	1911569
mygprecrc_special	2178222
ZX_rescale2prim	2233637
cmp_complex_appr	2237212
fujiwara_bound	2271032
checkbound	2354910
refine_H	2459837
scalepol	4287999
mygprec_absolute	4337344
_mp_mul	4374398
logmax_modulus	4449286
bkeval_single_power	5234599
splitpoleval	5235014
newton_polygon	5505089
X2XP1	5990029
_mp_sqr	6297986
dblexp	6546980
quicktofp	6976733
RgX_gtofp_bit	7028914
abs_update	8003201
mydbllogr	9543942
homothetie2n	9954101
_gen_nored	11198897
eval_rel_pol	13133889
fft	14154483
_gen_one	14469961
ZX_to_ZiX	16445627
pol_to_gaussint	17583068
_mp_add	24661177
_mp_cmul	34759505
myshiftrc	35493927
homothetie_gauss	36484899
lower_bound	40940844
findpower	40940917
graeffe	49493499
mydbllog2r	56168076
mygprec	63738857
ZiX_sqr	99001361
myshiftic	135791719
mygprecrc	215108732
mydbllog2i	226342820
dbllog2	302002880

Generated by: LCOV version 1.16