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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296159
RgX_gtofp_bit	7028914
RgX_normalize1	35733
X2XP1	5990029
ZX_Uspensky	1313758
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15200
ZX_graeffe	5390
ZX_realroots_irred	48562
ZX_rescale2prim	2233637
ZX_sturm	6395
ZX_sturm_i	122977
ZX_sturm_irred	116582
ZX_sturmpart	1128262
ZX_to_ZiX	16445627
ZiX_sqr	99001361
_gen_nored	11198897
_gen_one	14469961
_gen_zero	326007
_intervalcmp	0
_mp_add	24661177
_mp_cmul	34759505
_mp_mul	4374398
_mp_sqr	6297986
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	536974
abs_update	8003201
abs_update_r	778541
all_roots	535867
append_clone	1613476
bkeval_single_power	5234599
check_ab	1178890
checkbound	2354910
checkvalidpol	266892
clean_roots	535913
cleanroots	231763
cmp_complex_appr	2237212
conformal_basecase	1403413
conformal_mapping	467767
conformal_pol	1403531
dblexp	6546980
dbllog2	302002880
dft	502213
dual_modulus	1012153
eval_rel_pol	13133889
fft	14154483
fft2	7462
findpower	40940917
fix_roots	536967
fix_roots1	398344
fujiwara_bound	2271032
fujiwara_bound_real	1406749
graeffe	49493499
homothetie	1609564
homothetie2n	9954101
homothetie_gauss	36484899
ind_maxlog2	902386
initdft	996021
isexactpol	239753
isexactscalar	931714
isreal	961590
isvalidcoeff	1228149
logmax_modulus	4449286
logmin_modulus	1614247
logmodulus	606537
logpre_modulus	606534
logradius	493819
lower_bound	40940844
mydbllog2i	226342820
mydbllog2r	56168076
mydbllogr	9543942
mygprec	63738857
mygprec_absolute	4337344
mygprec_special	536975
mygprecrc	215108732
mygprecrc_special	2178222
myshiftic	135791719
myshiftrc	35493927
newton_polygon	5505089
optimize_split	493824
parameters	493824
pol_to_gaussint	17583068
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166696
quicktofp	6976733
realroots	50627
refine_F	502212
refine_H	2459837
root_error	1911569
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4287999
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494189
split_0_1	468132
split_0_2	468132
split_1	467766
split_2	493820
split_complete	1525345
split_fromU	493824
split_pols	166690
splitcauchy	166697
splitpoleval	5235014
tocomplex	1213132
update_radius	493821
usp	1125975

Generated by: LCOV version 1.16