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
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296164
RgX_gtofp_bit	7028890
RgX_normalize1	35733
X2XP1	5989691
ZX_Uspensky	1313703
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15197
ZX_graeffe	5390
ZX_realroots_irred	48556
ZX_rescale2prim	2233494
ZX_sturm	6395
ZX_sturm_i	122974
ZX_sturm_irred	116579
ZX_sturmpart	1128213
ZX_to_ZiX	16446691
ZiX_sqr	99005143
_gen_nored	11200087
_gen_one	14471400
_gen_zero	325949
_intervalcmp	0
_mp_add	24660155
_mp_cmul	34761465
_mp_mul	4374451
_mp_sqr	6297969
_mp_sub	0
_sqrtnr	22591
a_posteriori_errors	536975
abs_update	8003442
abs_update_r	778520
all_roots	535873
append_clone	1613482
bkeval_single_power	5234850
check_ab	1178839
checkbound	2354808
checkvalidpol	266892
clean_roots	535920
cleanroots	231763
cmp_complex_appr	2237252
conformal_basecase	1403444
conformal_mapping	467775
conformal_pol	1403564
dblexp	6546955
dbllog2	301989226
dft	502215
dual_modulus	1012175
eval_rel_pol	13134122
fft	14154614
fft2	7462
findpower	40943844
fix_roots	536976
fix_roots1	398347
fujiwara_bound	2270978
fujiwara_bound_real	1406666
graeffe	49490410
homothetie	1609592
homothetie2n	9954171
homothetie_gauss	36485288
ind_maxlog2	902422
initdft	996043
isexactpol	239753
isexactscalar	931714
isreal	961608
isvalidcoeff	1228149
logmax_modulus	4449401
logmin_modulus	1614290
logmodulus	606534
logpre_modulus	606530
logradius	493825
lower_bound	40943628
mydbllog2i	226353780
mydbllog2r	56168128
mydbllogr	9544399
mygprec	63739461
mygprec_absolute	4337367
mygprec_special	536982
mygprecrc	215113834
mygprecrc_special	2178244
myshiftic	135755977
myshiftrc	35493856
newton_polygon	5505083
optimize_split	493830
parameters	493829
pol_to_gaussint	17583485
polgraeffe	14
polmod_to_embed	84
polrootsbound	27131
polrootsbound_i	27125
polsolve	166673
quicktofp	6976671
realroots	50627
refine_F	502216
refine_H	2459895
root_error	1911603
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288080
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494194
split_0_1	468138
split_0_2	468138
split_1	467778
split_2	493829
split_complete	1525346
split_fromU	493830
split_pols	166683
splitcauchy	166682
splitpoleval	5234783
tocomplex	1213151
update_radius	493828
usp	1125893

Generated by: LCOV version 1.16