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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296310
RgX_gtofp_bit	7035399
RgX_normalize1	35705
X2XP1	5990796
ZX_Uspensky	1313936
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48575
ZX_rescale2prim	2233893
ZX_sturm	6395
ZX_sturm_i	123071
ZX_sturm_irred	116676
ZX_sturmpart	1128335
ZX_to_ZiX	16451956
ZiX_sqr	99069169
_gen_nored	11205960
_gen_one	14474710
_gen_zero	326021
_intervalcmp	0
_mp_add	24665069
_mp_cmul	34774017
_mp_mul	4374657
_mp_sqr	6298600
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	537121
abs_update	8008642
abs_update_r	779104
all_roots	536019
append_clone	1614341
bkeval_single_power	5235744
check_ab	1178962
checkbound	2355054
checkvalidpol	266864
clean_roots	536066
cleanroots	231763
cmp_complex_appr	2238493
conformal_basecase	1404270
conformal_mapping	468053
conformal_pol	1404388
dblexp	6551676
dbllog2	302188742
dft	502537
dual_modulus	1012838
eval_rel_pol	13144971
fft	14165500
fft2	7462
findpower	40966112
fix_roots	537117
fix_roots1	398482
fujiwara_bound	2271690
fujiwara_bound_real	1406999
graeffe	49528269
homothetie	1610812
homothetie2n	9962059
homothetie_gauss	36505537
ind_maxlog2	903061
initdft	996686
isexactpol	239753
isexactscalar	931714
isreal	962202
isvalidcoeff	1228065
logmax_modulus	4451820
logmin_modulus	1615179
logmodulus	607100
logpre_modulus	607099
logradius	494145
lower_bound	40964764
mydbllog2i	226488759
mydbllog2r	56189461
mydbllogr	9550447
mygprec	63776416
mygprec_absolute	4339636
mygprec_special	537125
mygprecrc	215231784
mygprecrc_special	2179238
myshiftic	135901937
myshiftrc	35519481
newton_polygon	5510550
optimize_split	494150
parameters	494150
pol_to_gaussint	17596677
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166704
quicktofp	6979504
realroots	50627
refine_F	502531
refine_H	2461231
root_error	1912465
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4290697
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494514
split_0_1	468414
split_0_2	468415
split_1	468053
split_2	494148
split_complete	1526151
split_fromU	494149
split_pols	166700
splitcauchy	166707
splitpoleval	5236364
tocomplex	1213836
update_radius	494149
usp	1126135

Generated by: LCOV version 1.16