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 30569-8181146aa1) Lines: 1467 1530 95.9 % Date: 2025-12-03 09:22:05 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296483
RgX_gtofp_bit	7031680
RgX_normalize1	35908
X2XP1	5990097
ZX_Uspensky	1313939
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15273
ZX_graeffe	5390
ZX_realroots_irred	48652
ZX_rescale2prim	2233656
ZX_sturm	6395
ZX_sturm_i	123190
ZX_sturm_irred	116795
ZX_sturmpart	1128277
ZX_to_ZiX	16453142
ZiX_sqr	99027011
_gen_nored	11202621
_gen_one	14472900
_gen_zero	326138
_intervalcmp	0
_mp_add	24662116
_mp_cmul	34767251
_mp_mul	4374579
_mp_sqr	6298258
_mp_sub	0
_sqrtnr	22707
a_posteriori_errors	537290
abs_update	8005097
abs_update_r	778690
all_roots	536190
append_clone	1614294
bkeval_single_power	5235771
check_ab	1178904
checkbound	2354938
checkvalidpol	267067
clean_roots	536233
cleanroots	231763
cmp_complex_appr	2238709
conformal_basecase	1403879
conformal_mapping	467920
conformal_pol	1403997
dblexp	6548978
dbllog2	302085964
dft	502361
dual_modulus	1012463
eval_rel_pol	13138245
fft	14159024
fft2	7462
findpower	40954231
fix_roots	537289
fix_roots1	398483
fujiwara_bound	2271981
fujiwara_bound_real	1406980
graeffe	49504812
homothetie	1610103
homothetie2n	9957706
homothetie_gauss	36495801
ind_maxlog2	902663
initdft	996334
isexactpol	239753
isexactscalar	931714
isreal	961891
isvalidcoeff	1230270
logmax_modulus	4450820
logmin_modulus	1614752
logmodulus	606759
logpre_modulus	606760
logradius	493970
lower_bound	40954386
mydbllog2i	226419384
mydbllog2r	56181589
mydbllogr	9546579
mygprec	63757776
mygprec_absolute	4340571
mygprec_special	537298
mygprecrc	215176628
mygprecrc_special	2179372
myshiftic	135817565
myshiftrc	35506498
newton_polygon	5507252
optimize_split	493975
parameters	493974
pol_to_gaussint	17588984
polgraeffe	14
polmod_to_embed	84
polrootsbound	27307
polrootsbound_i	27300
polsolve	166718
quicktofp	6979568
realroots	50627
refine_F	502357
refine_H	2460444
root_error	1912774
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289351
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494336
split_0_1	468280
split_0_2	468280
split_1	467918
split_2	493970
split_complete	1525953
split_fromU	493975
split_pols	166719
splitcauchy	166729
splitpoleval	5235619
tocomplex	1214162
update_radius	493971
usp	1126040

Generated by: LCOV version 1.16