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 30550-07450a7a86) Lines: 1467 1530 95.9 % Date: 2025-11-19 09:22:25 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	15275
_sqrtnr	22709
polrootsbound_i	27293
polrootsbound	27300
RgX_normalize1	35901
ZX_realroots_irred	48653
realroots	50627
ZX_sturm_irred	116775
ZX_sturm_i	123171
split_pols	166709
polsolve	166714
splitcauchy	166724
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267060
QX_complex_roots	296417
_gen_zero	326146
fix_roots1	398465
conformal_mapping	467921
split_1	467921
split_0_1	468283
split_0_2	468284
logradius	493974
parameters	493974
update_radius	493974
split_2	493975
optimize_split	493977
split_fromU	493977
split_0	494340
refine_F	502358
dft	502364
all_roots	536121
clean_roots	536173
fix_roots	537225
a_posteriori_errors	537229
mygprec_special	537231
logpre_modulus	606749
logmodulus	606757
abs_update_r	778680
ind_maxlog2	902668
isexactscalar	931714
isreal	961897
initdft	996341
dual_modulus	1012457
usp	1126079
ZX_sturmpart	1128271
check_ab	1178898
tocomplex	1213974
isvalidcoeff	1230235
ZX_Uspensky	1313914
conformal_basecase	1403880
conformal_pol	1404000
fujiwara_bound_real	1406947
split_complete	1525904
homothetie	1610094
append_clone	1614181
logmin_modulus	1614775
root_error	1912590
mygprecrc_special	2179192
ZX_rescale2prim	2233914
cmp_complex_appr	2238532
fujiwara_bound	2271818
checkbound	2354926
refine_H	2460484
scalepol	4289366
mygprec_absolute	4339995
_mp_mul	4374437
logmax_modulus	4450858
splitpoleval	5235516
bkeval_single_power	5235638
newton_polygon	5507259
X2XP1	5990699
_mp_sqr	6298339
dblexp	6549035
quicktofp	6979252
RgX_gtofp_bit	7031634
abs_update	8005211
mydbllogr	9546766
homothetie2n	9957762
_gen_nored	11198472
eval_rel_pol	13138232
fft	14159058
_gen_one	14472432
ZX_to_ZiX	16456573
pol_to_gaussint	17589073
_mp_add	24658545
_mp_cmul	34757353
myshiftrc	35507170
homothetie_gauss	36497227
lower_bound	40954845
findpower	40957025
graeffe	49504631
mydbllog2r	56182751
mygprec	63757840
ZiX_sqr	99034819
myshiftic	135790267
mygprecrc	215188313
mydbllog2i	226410849
dbllog2	302061499

Generated by: LCOV version 1.16