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 30587-f85873d515) Lines: 1467 1530 95.9 % Date: 2025-12-29 09:21:39 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	15197
_sqrtnr	22591
polrootsbound_i	27125
polrootsbound	27131
RgX_normalize1	35733
ZX_realroots_irred	48556
realroots	50627
ZX_sturm_irred	116579
ZX_sturm_i	122974
polsolve	166673
splitcauchy	166682
split_pols	166683
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296164
_gen_zero	325949
fix_roots1	398347
conformal_mapping	467775
split_1	467778
split_0_1	468138
split_0_2	468138
logradius	493825
update_radius	493828
parameters	493829
split_2	493829
optimize_split	493830
split_fromU	493830
split_0	494194
dft	502215
refine_F	502216
all_roots	535873
clean_roots	535920
a_posteriori_errors	536975
fix_roots	536976
mygprec_special	536982
logpre_modulus	606530
logmodulus	606534
abs_update_r	778520
ind_maxlog2	902422
isexactscalar	931714
isreal	961608
initdft	996043
dual_modulus	1012175
usp	1125893
ZX_sturmpart	1128213
check_ab	1178839
tocomplex	1213151
isvalidcoeff	1228149
ZX_Uspensky	1313703
conformal_basecase	1403444
conformal_pol	1403564
fujiwara_bound_real	1406666
split_complete	1525346
homothetie	1609592
append_clone	1613482
logmin_modulus	1614290
root_error	1911603
mygprecrc_special	2178244
ZX_rescale2prim	2233494
cmp_complex_appr	2237252
fujiwara_bound	2270978
checkbound	2354808
refine_H	2459895
scalepol	4288080
mygprec_absolute	4337367
_mp_mul	4374451
logmax_modulus	4449401
splitpoleval	5234783
bkeval_single_power	5234850
newton_polygon	5505083
X2XP1	5989691
_mp_sqr	6297969
dblexp	6546955
quicktofp	6976671
RgX_gtofp_bit	7028890
abs_update	8003442
mydbllogr	9544399
homothetie2n	9954171
_gen_nored	11200087
eval_rel_pol	13134122
fft	14154614
_gen_one	14471400
ZX_to_ZiX	16446691
pol_to_gaussint	17583485
_mp_add	24660155
_mp_cmul	34761465
myshiftrc	35493856
homothetie_gauss	36485288
lower_bound	40943628
findpower	40943844
graeffe	49490410
mydbllog2r	56168128
mygprec	63739461
ZiX_sqr	99005143
myshiftic	135755977
mygprecrc	215113834
mydbllog2i	226353780
dbllog2	301989226

Generated by: LCOV version 1.16