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 30831-19b50a36d0) Lines: 1467 1530 95.9 % Date: 2026-04-20 09:27:00 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296307
RgX_gtofp_bit	7048715
RgX_normalize1	35705
X2XP1	5990921
ZX_Uspensky	1313939
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5439
ZX_realroots_irred	48571
ZX_rescale2prim	2233938
ZX_sturm	6395
ZX_sturm_i	123060
ZX_sturm_irred	116666
ZX_sturmpart	1128342
ZX_to_ZiX	16490657
ZiX_sqr	99217878
_gen_nored	11200755
_gen_one	14469561
_gen_zero	325991
_intervalcmp	0
_mp_add	24659740
_mp_cmul	34759967
_mp_mul	4374368
_mp_sqr	6298092
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537485
abs_update	8021553
abs_update_r	780195
all_roots	536373
append_clone	1616252
bkeval_single_power	5234949
check_ab	1178969
checkbound	2355069
checkvalidpol	267228
clean_roots	536421
cleanroots	231763
cmp_complex_appr	2241652
conformal_basecase	1406541
conformal_mapping	468810
conformal_pol	1406659
dblexp	6563032
dbllog2	303907086
dft	503362
dual_modulus	1014563
eval_rel_pol	13169550
fft	14196422
fft2	7462
findpower	41027064
fix_roots	537482
fix_roots1	398801
fujiwara_bound	2272893
fujiwara_bound_real	1407007
graeffe	49602584
homothetie	1613701
homothetie2n	9979555
homothetie_gauss	36562165
ind_maxlog2	904420
initdft	998321
isexactpol	240117
isexactscalar	934122
isreal	963772
isvalidcoeff	1230557
logmax_modulus	4458783
logmin_modulus	1617764
logmodulus	608276
logpre_modulus	608273
logradius	494961
lower_bound	41027747
mydbllog2i	226759568
mydbllog2r	57618018
mydbllogr	9566208
mygprec	63864703
mygprec_absolute	4344366
mygprec_special	537488
mygprecrc	215563504
mygprecrc_special	2181497
myshiftic	136084190
myshiftrc	35579459
newton_polygon	5521239
optimize_split	494963
parameters	494961
pol_to_gaussint	17628284
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166700
quicktofp	6984373
realroots	50627
refine_F	503360
refine_H	2464717
root_error	1914488
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297650
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495335
split_0_1	469177
split_0_2	469177
split_1	468811
split_2	494961
split_complete	1528141
split_fromU	494963
split_pols	166700
splitcauchy	166709
splitpoleval	5235050
tocomplex	1215955
update_radius	494962
usp	1126143

Generated by: LCOV version 1.16