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 30824-18397de1d0) Lines: 1467 1530 95.9 % Date: 2026-04-18 09:26:04 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296301
RgX_gtofp_bit	7048550
RgX_normalize1	35705
X2XP1	5990593
ZX_Uspensky	1313866
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5439
ZX_realroots_irred	48566
ZX_rescale2prim	2233817
ZX_sturm	6395
ZX_sturm_i	123057
ZX_sturm_irred	116661
ZX_sturmpart	1128279
ZX_to_ZiX	16490479
ZiX_sqr	99215235
_gen_nored	11198679
_gen_one	14466542
_gen_zero	325961
_intervalcmp	0
_mp_add	24659422
_mp_cmul	34757968
_mp_mul	4374432
_mp_sqr	6297835
_mp_sub	0
_sqrtnr	22595
a_posteriori_errors	537477
abs_update	8021260
abs_update_r	780195
all_roots	536376
append_clone	1616239
bkeval_single_power	5233986
check_ab	1178906
checkbound	2354942
checkvalidpol	267228
clean_roots	536422
cleanroots	231763
cmp_complex_appr	2241586
conformal_basecase	1406546
conformal_mapping	468809
conformal_pol	1406663
dblexp	6562961
dbllog2	303913817
dft	503361
dual_modulus	1014539
eval_rel_pol	13169100
fft	14196230
fft2	7462
findpower	41028392
fix_roots	537476
fix_roots1	398797
fujiwara_bound	2272817
fujiwara_bound_real	1406936
graeffe	49602560
homothetie	1613675
homothetie2n	9979553
homothetie_gauss	36562464
ind_maxlog2	904374
initdft	998319
isexactpol	240117
isexactscalar	934122
isreal	963771
isvalidcoeff	1230557
logmax_modulus	4458824
logmin_modulus	1617779
logmodulus	608264
logpre_modulus	608267
logradius	494955
lower_bound	41028579
mydbllog2i	226764823
mydbllog2r	57617927
mydbllogr	9565988
mygprec	63863666
mygprec_absolute	4344339
mygprec_special	537488
mygprecrc	215559099
mygprecrc_special	2181503
myshiftic	136087515
myshiftrc	35579127
newton_polygon	5521141
optimize_split	494962
parameters	494956
pol_to_gaussint	17627975
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166704
quicktofp	6984176
realroots	50627
refine_F	503352
refine_H	2464679
root_error	1914500
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297632
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495330
split_0_1	469178
split_0_2	469178
split_1	468810
split_2	494959
split_complete	1528136
split_fromU	494962
split_pols	166702
splitcauchy	166711
splitpoleval	5234452
tocomplex	1215950
update_radius	494958
usp	1126065

Generated by: LCOV version 1.16