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 30571-c0dfe82732) Lines: 1467 1530 95.9 % Date: 2025-12-08 09:22:00 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296481
RgX_gtofp_bit	7031705
RgX_normalize1	35908
X2XP1	5990475
ZX_Uspensky	1313814
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15275
ZX_graeffe	5390
ZX_realroots_irred	48653
ZX_rescale2prim	2233761
ZX_sturm	6395
ZX_sturm_i	123198
ZX_sturm_irred	116803
ZX_sturmpart	1128147
ZX_to_ZiX	16455494
ZiX_sqr	99030291
_gen_nored	11202219
_gen_one	14473097
_gen_zero	326142
_intervalcmp	0
_mp_add	24662518
_mp_cmul	34767432
_mp_mul	4374500
_mp_sqr	6298171
_mp_sub	0
_sqrtnr	22709
a_posteriori_errors	537293
abs_update	8005347
abs_update_r	778677
all_roots	536190
append_clone	1614300
bkeval_single_power	5235869
check_ab	1178774
checkbound	2354679
checkvalidpol	267067
clean_roots	536232
cleanroots	231763
cmp_complex_appr	2238713
conformal_basecase	1403891
conformal_mapping	467927
conformal_pol	1404010
dblexp	6549081
dbllog2	302102886
dft	502370
dual_modulus	1012463
eval_rel_pol	13138374
fft	14159690
fft2	7462
findpower	40955867
fix_roots	537291
fix_roots1	398485
fujiwara_bound	2271851
fujiwara_bound_real	1406858
graeffe	49506738
homothetie	1610116
homothetie2n	9957897
homothetie_gauss	36498169
ind_maxlog2	902690
initdft	996351
isexactpol	239753
isexactscalar	931714
isreal	961904
isvalidcoeff	1230270
logmax_modulus	4450940
logmin_modulus	1614799
logmodulus	606763
logpre_modulus	606764
logradius	493977
lower_bound	40956114
mydbllog2i	226432520
mydbllog2r	56183255
mydbllogr	9546788
mygprec	63758276
mygprec_absolute	4340566
mygprec_special	537295
mygprecrc	215186063
mygprecrc_special	2179376
myshiftic	135825878
myshiftrc	35507112
newton_polygon	5507253
optimize_split	493982
parameters	493981
pol_to_gaussint	17589228
polgraeffe	14
polmod_to_embed	84
polrootsbound	27307
polrootsbound_i	27300
polsolve	166719
quicktofp	6979367
realroots	50627
refine_F	502367
refine_H	2460479
root_error	1912775
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289412
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494344
split_0_1	468289
split_0_2	468290
split_1	467925
split_2	493975
split_complete	1525968
split_fromU	493982
split_pols	166720
splitcauchy	166726
splitpoleval	5235651
tocomplex	1214158
update_radius	493979
usp	1126043

Generated by: LCOV version 1.16