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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 94.1 % 1561 1469 Test Date: 2026-09-24 17:04:29 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
polgraeffe	0
scalepol2n	0
RgX_Graeffe	14
ZX_Uspensky_equal_yes	14
polgraeffe0	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	5460
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15274
_sqrtnr	22877
polrootsbound_i	27800
polrootsbound	27807
RgX_normalize1	36408
ZX_realroots_irred	48669
realroots	50631
ZX_sturm_irred	117167
ZX_sturm_i	123562
polsolve	166990
split_pols	166990
splitcauchy	166990
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268043
QX_complex_roots	297217
_gen_zero	326083
fix_roots1	398955
conformal_mapping	469141
split_1	469141
split_0_1	469513
split_0_2	469513
logradius	495274
optimize_split	495274
parameters	495274
split_2	495274
split_fromU	495274
update_radius	495274
split_0	495646
dft	503716
refine_F	503716
all_roots	537404
clean_roots	537446
a_posteriori_errors	538505
fix_roots	538505
mygprec_special	538505
logmodulus	608834
logpre_modulus	608834
abs_update_r	781182
ind_maxlog2	904895
isexactscalar	934563
isreal	964415
initdft	998990
dual_modulus	1015242
usp	1128019
ZX_sturmpart	1129090
check_ab	1179721
tocomplex	1219423
isvalidcoeff	1235245
ZX_Uspensky	1315191
conformal_basecase	1407542
conformal_pol	1407661
fujiwara_bound_real	1408300
split_complete	1529797
homothetie	1614944
logmin_modulus	1618144
append_clone	1618829
root_error	1919308
mygprecrc_special	2185104
ZX_rescale2prim	2237976
cmp_complex_appr	2249841
fujiwara_bound	2276816
checkbound	2356572
refine_H	2466381
scalepol	4300668
mygprec_absolute	4356238
_mp_mul	4430508
logmax_modulus	4461148
bkeval_single_power	5250403
splitpoleval	5250403
newton_polygon	5526715
X2XP1	6001759
_mp_sqr	6349893
dblexp	6569454
quicktofp	7000305
RgX_gtofp_bit	7056134
abs_update	8028128
mydbllogr	9573815
homothetie2n	9987863
_gen_nored	11268048
eval_rel_pol	13181474
fft	14225305
_gen_one	14524760
ZX_to_ZiX	16453881
pol_to_gaussint	17642622
_mp_add	24942127
_mp_cmul	35116850
myshiftrc	35616593
homothetie_gauss	36602961
findpower	41064109
lower_bound	41064109
graeffe	49674088
mydbllog2r	58108274
mygprec	63982103
ZiX_sqr	99348176
myshiftic	136511779
mygprecrc	215737783
mydbllog2i	227081220
dbllog2	304771548

Generated by: LCOV version 2.0-1