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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296155
RgX_gtofp_bit	7028942
RgX_normalize1	35732
X2XP1	5989712
ZX_Uspensky	1313682
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5390
ZX_realroots_irred	48563
ZX_rescale2prim	2233511
ZX_sturm	6395
ZX_sturm_i	122967
ZX_sturm_irred	116573
ZX_sturmpart	1128182
ZX_to_ZiX	16448667
ZiX_sqr	99006774
_gen_nored	11193043
_gen_one	14465247
_gen_zero	325944
_intervalcmp	0
_mp_add	24654951
_mp_cmul	34744947
_mp_mul	4374291
_mp_sqr	6297659
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	536965
abs_update	8003415
abs_update_r	778529
all_roots	535864
append_clone	1613482
bkeval_single_power	5233513
check_ab	1178810
checkbound	2354750
checkvalidpol	266892
clean_roots	535914
cleanroots	231763
cmp_complex_appr	2237181
conformal_basecase	1403480
conformal_mapping	467787
conformal_pol	1403599
dblexp	6547213
dbllog2	301993898
dft	502227
dual_modulus	1012171
eval_rel_pol	13134011
fft	14154629
fft2	7462
findpower	40945295
fix_roots	536967
fix_roots1	398343
fujiwara_bound	2270943
fujiwara_bound_real	1406644
graeffe	49488610
homothetie	1609594
homothetie2n	9954248
homothetie_gauss	36486463
ind_maxlog2	902418
initdft	996065
isexactpol	239753
isexactscalar	931714
isreal	961626
isvalidcoeff	1228144
logmax_modulus	4449479
logmin_modulus	1614331
logmodulus	606540
logpre_modulus	606541
logradius	493836
lower_bound	40944842
mydbllog2i	226346316
mydbllog2r	56169027
mydbllogr	9544408
mygprec	63739852
mygprec_absolute	4337268
mygprec_special	536978
mygprecrc	215122558
mygprecrc_special	2178227
myshiftic	135767913
myshiftrc	35495303
newton_polygon	5505159
optimize_split	493838
parameters	493839
pol_to_gaussint	17583524
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27124
polsolve	166693
quicktofp	6976289
realroots	50627
refine_F	502220
refine_H	2459913
root_error	1911564
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288150
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494200
split_0_1	468152
split_0_2	468153
split_1	467789
split_2	493836
split_complete	1525364
split_fromU	493838
split_pols	166688
splitcauchy	166701
splitpoleval	5233645
tocomplex	1213137
update_radius	493838
usp	1125868

Generated by: LCOV version 1.16