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 30735-65f72320ad) Lines: 1467 1530 95.9 % Date: 2026-03-16 09:23:47 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	5439
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15204
_sqrtnr	22597
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48574
realroots	50627
ZX_sturm_irred	116676
ZX_sturm_i	123071
split_pols	166703
splitcauchy	166707
polsolve	166708
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266864
QX_complex_roots	296310
_gen_zero	325995
fix_roots1	398483
conformal_mapping	468064
split_1	468064
split_0_1	468425
split_0_2	468426
logradius	494151
update_radius	494151
parameters	494153
optimize_split	494155
split_2	494155
split_fromU	494155
split_0	494518
refine_F	502536
dft	502540
all_roots	536020
clean_roots	536057
fix_roots	537114
a_posteriori_errors	537122
mygprec_special	537124
logpre_modulus	607098
logmodulus	607101
abs_update_r	779105
ind_maxlog2	903043
isexactscalar	931714
isreal	962216
initdft	996691
dual_modulus	1012828
usp	1126082
ZX_sturmpart	1128285
check_ab	1178912
tocomplex	1213837
isvalidcoeff	1228065
ZX_Uspensky	1313889
conformal_basecase	1404305
conformal_pol	1404424
fujiwara_bound_real	1406955
split_complete	1526156
homothetie	1610784
append_clone	1614334
logmin_modulus	1615234
root_error	1912443
mygprecrc_special	2179237
ZX_rescale2prim	2233739
cmp_complex_appr	2238450
fujiwara_bound	2271641
checkbound	2354954
refine_H	2461254
scalepol	4290773
mygprec_absolute	4339569
_mp_mul	4374680
logmax_modulus	4451921
bkeval_single_power	5235748
splitpoleval	5236583
newton_polygon	5510505
X2XP1	5990496
_mp_sqr	6298612
dblexp	6551739
quicktofp	6979375
RgX_gtofp_bit	7035419
abs_update	8008499
mydbllogr	9550309
homothetie2n	9962144
_gen_nored	11207927
eval_rel_pol	13144865
fft	14165457
_gen_one	14475192
ZX_to_ZiX	16452315
pol_to_gaussint	17596723
_mp_add	24665706
_mp_cmul	34778516
myshiftrc	35520700
homothetie_gauss	36506031
lower_bound	40965280
findpower	40966890
graeffe	49528788
mydbllog2r	56191100
mygprec	63778541
ZiX_sqr	99072685
myshiftic	135916291
mygprecrc	215238877
mydbllog2i	226506774
dbllog2	302215652

Generated by: LCOV version 1.16