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 30617-dd5c93fb0e) Lines: 1467 1530 95.9 % Date: 2026-01-20 09:21:06 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	15202
_sqrtnr	22595
polrootsbound_i	27124
polrootsbound	27132
RgX_normalize1	35732
ZX_realroots_irred	48563
realroots	50627
ZX_sturm_irred	116573
ZX_sturm_i	122967
split_pols	166688
polsolve	166693
splitcauchy	166701
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296155
_gen_zero	325944
fix_roots1	398343
conformal_mapping	467787
split_1	467789
split_0_1	468152
split_0_2	468153
logradius	493836
split_2	493836
optimize_split	493838
split_fromU	493838
update_radius	493838
parameters	493839
split_0	494200
refine_F	502220
dft	502227
all_roots	535864
clean_roots	535914
a_posteriori_errors	536965
fix_roots	536967
mygprec_special	536978
logmodulus	606540
logpre_modulus	606541
abs_update_r	778529
ind_maxlog2	902418
isexactscalar	931714
isreal	961626
initdft	996065
dual_modulus	1012171
usp	1125868
ZX_sturmpart	1128182
check_ab	1178810
tocomplex	1213137
isvalidcoeff	1228144
ZX_Uspensky	1313682
conformal_basecase	1403480
conformal_pol	1403599
fujiwara_bound_real	1406644
split_complete	1525364
homothetie	1609594
append_clone	1613482
logmin_modulus	1614331
root_error	1911564
mygprecrc_special	2178227
ZX_rescale2prim	2233511
cmp_complex_appr	2237181
fujiwara_bound	2270943
checkbound	2354750
refine_H	2459913
scalepol	4288150
mygprec_absolute	4337268
_mp_mul	4374291
logmax_modulus	4449479
bkeval_single_power	5233513
splitpoleval	5233645
newton_polygon	5505159
X2XP1	5989712
_mp_sqr	6297659
dblexp	6547213
quicktofp	6976289
RgX_gtofp_bit	7028942
abs_update	8003415
mydbllogr	9544408
homothetie2n	9954248
_gen_nored	11193043
eval_rel_pol	13134011
fft	14154629
_gen_one	14465247
ZX_to_ZiX	16448667
pol_to_gaussint	17583524
_mp_add	24654951
_mp_cmul	34744947
myshiftrc	35495303
homothetie_gauss	36486463
lower_bound	40944842
findpower	40945295
graeffe	49488610
mydbllog2r	56169027
mygprec	63739852
ZiX_sqr	99006774
myshiftic	135767913
mygprecrc	215122558
mydbllog2i	226346316
dbllog2	301993898

Generated by: LCOV version 1.16