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 30773-2078653b96) Lines: 1467 1530 95.9 % Date: 2026-04-04 09:27:12 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296308
RgX_gtofp_bit	7048007
RgX_normalize1	35705
X2XP1	5990494
ZX_Uspensky	1313905
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5439
ZX_realroots_irred	48570
ZX_rescale2prim	2233746
ZX_sturm	6395
ZX_sturm_i	123067
ZX_sturm_irred	116672
ZX_sturmpart	1128307
ZX_to_ZiX	16491815
ZiX_sqr	99231006
_gen_nored	11198926
_gen_one	14470398
_gen_zero	325973
_intervalcmp	0
_mp_add	24660408
_mp_cmul	34759227
_mp_mul	4374430
_mp_sqr	6298324
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	537470
abs_update	8020955
abs_update_r	780123
all_roots	536367
append_clone	1616158
bkeval_single_power	5235076
check_ab	1178934
checkbound	2354998
checkvalidpol	267214
clean_roots	536416
cleanroots	231763
cmp_complex_appr	2241444
conformal_basecase	1406472
conformal_mapping	468786
conformal_pol	1406594
dblexp	6562501
dbllog2	304015074
dft	503327
dual_modulus	1014480
eval_rel_pol	13168351
fft	14194389
fft2	7462
findpower	41030214
fix_roots	537471
fix_roots1	398790
fujiwara_bound	2272007
fujiwara_bound_real	1406980
graeffe	49605393
homothetie	1613565
homothetie2n	9979079
homothetie_gauss	36565663
ind_maxlog2	904357
initdft	998261
isexactpol	240103
isexactscalar	934017
isreal	963721
isvalidcoeff	1230445
logmax_modulus	4458699
logmin_modulus	1617716
logmodulus	608214
logpre_modulus	608217
logradius	494930
lower_bound	41030162
mydbllog2i	226870330
mydbllog2r	57612969
mydbllogr	9565223
mygprec	63861838
mygprec_absolute	4344222
mygprec_special	537474
mygprecrc	215571698
mygprecrc_special	2181402
myshiftic	136082569
myshiftrc	35577388
newton_polygon	5520732
optimize_split	494935
parameters	494935
pol_to_gaussint	17627124
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166692
quicktofp	6981285
realroots	50627
refine_F	503321
refine_H	2464583
root_error	1914417
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297402
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495301
split_0_1	469156
split_0_2	469158
split_1	468786
split_2	494931
split_complete	1528071
split_fromU	494935
split_pols	166704
splitcauchy	166712
splitpoleval	5235134
tocomplex	1215879
update_radius	494933
usp	1126086

Generated by: LCOV version 1.16