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: 1468 1530 95.9 % Date: 2026-03-10 09:24:00 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	15205
_sqrtnr	22598
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48575
realroots	50627
ZX_sturm_irred	116676
ZX_sturm_i	123071
split_pols	166700
polsolve	166704
splitcauchy	166707
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266864
QX_complex_roots	296310
_gen_zero	326021
fix_roots1	398482
conformal_mapping	468053
split_1	468053
split_0_1	468414
split_0_2	468415
logradius	494145
split_2	494148
split_fromU	494149
update_radius	494149
optimize_split	494150
parameters	494150
split_0	494514
refine_F	502531
dft	502537
all_roots	536019
clean_roots	536066
fix_roots	537117
a_posteriori_errors	537121
mygprec_special	537125
logpre_modulus	607099
logmodulus	607100
abs_update_r	779104
ind_maxlog2	903061
isexactscalar	931714
isreal	962202
initdft	996686
dual_modulus	1012838
usp	1126135
ZX_sturmpart	1128335
check_ab	1178962
tocomplex	1213836
isvalidcoeff	1228065
ZX_Uspensky	1313936
conformal_basecase	1404270
conformal_pol	1404388
fujiwara_bound_real	1406999
split_complete	1526151
homothetie	1610812
append_clone	1614341
logmin_modulus	1615179
root_error	1912465
mygprecrc_special	2179238
ZX_rescale2prim	2233893
cmp_complex_appr	2238493
fujiwara_bound	2271690
checkbound	2355054
refine_H	2461231
scalepol	4290697
mygprec_absolute	4339636
_mp_mul	4374657
logmax_modulus	4451820
bkeval_single_power	5235744
splitpoleval	5236364
newton_polygon	5510550
X2XP1	5990796
_mp_sqr	6298600
dblexp	6551676
quicktofp	6979504
RgX_gtofp_bit	7035399
abs_update	8008642
mydbllogr	9550447
homothetie2n	9962059
_gen_nored	11205960
eval_rel_pol	13144971
fft	14165500
_gen_one	14474710
ZX_to_ZiX	16451956
pol_to_gaussint	17596677
_mp_add	24665069
_mp_cmul	34774017
myshiftrc	35519481
homothetie_gauss	36505537
lower_bound	40964764
findpower	40966112
graeffe	49528269
mydbllog2r	56189461
mygprec	63776416
ZiX_sqr	99069169
myshiftic	135901937
mygprecrc	215231784
mydbllog2i	226488759
dbllog2	302188742

Generated by: LCOV version 1.16