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 30585-4c42182400) Lines: 1467 1530 95.9 % Date: 2025-12-23 09:21:19 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	15198
_sqrtnr	22591
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48554
realroots	50627
ZX_sturm_irred	116570
ZX_sturm_i	122965
polsolve	166671
split_pols	166673
splitcauchy	166686
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296169
_gen_zero	325949
fix_roots1	398347
conformal_mapping	467793
split_1	467793
split_0_1	468155
split_0_2	468155
logradius	493835
parameters	493841
split_2	493841
update_radius	493841
optimize_split	493844
split_fromU	493844
split_0	494204
refine_F	502221
dft	502232
all_roots	535871
clean_roots	535929
a_posteriori_errors	536983
fix_roots	536983
mygprec_special	536987
logpre_modulus	606529
logmodulus	606534
abs_update_r	778488
ind_maxlog2	902423
isexactscalar	931714
isreal	961637
initdft	996070
dual_modulus	1012183
usp	1125939
ZX_sturmpart	1128240
check_ab	1178867
tocomplex	1213155
isvalidcoeff	1228149
ZX_Uspensky	1313725
conformal_basecase	1403492
conformal_pol	1403613
fujiwara_bound_real	1406693
split_complete	1525391
homothetie	1609599
append_clone	1613489
logmin_modulus	1614407
root_error	1911596
mygprecrc_special	2178250
ZX_rescale2prim	2233617
cmp_complex_appr	2237213
fujiwara_bound	2270997
checkbound	2354864
refine_H	2459960
scalepol	4288204
mygprec_absolute	4337355
_mp_mul	4374479
logmax_modulus	4449649
splitpoleval	5234443
bkeval_single_power	5234528
newton_polygon	5505072
X2XP1	5989949
_mp_sqr	6297842
dblexp	6547221
quicktofp	6976634
RgX_gtofp_bit	7028866
abs_update	8003598
mydbllogr	9544650
homothetie2n	9954334
_gen_nored	11198086
eval_rel_pol	13134050
fft	14155063
_gen_one	14468832
ZX_to_ZiX	16453525
pol_to_gaussint	17583677
_mp_add	24659636
_mp_cmul	34758065
myshiftrc	35495079
homothetie_gauss	36486543
lower_bound	40945608
findpower	40945867
graeffe	49492733
mydbllog2r	56171760
mygprec	63741364
ZiX_sqr	99009744
myshiftic	135756097
mygprecrc	215130204
mydbllog2i	226372752
dbllog2	302024540

Generated by: LCOV version 1.16