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 30365-beea1ff998) Lines: 1467 1530 95.9 % Date: 2025-07-01 09:21:48 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	290025
RgX_gtofp_bit	7023592
RgX_normalize1	35887
X2XP1	5990427
ZX_Uspensky	1313886
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15275
ZX_graeffe	5383
ZX_realroots_irred	48625
ZX_rescale2prim	2233796
ZX_sturm	6395
ZX_sturm_i	123156
ZX_sturm_irred	116761
ZX_sturmpart	1128275
ZX_to_ZiX	16453043
ZiX_sqr	99005947
_gen_nored	11177808
_gen_one	14442923
_gen_zero	326001
_intervalcmp	0
_mp_add	24650962
_mp_cmul	34730624
_mp_mul	4373444
_mp_sqr	6291845
_mp_sub	0
_sqrtnr	22710
a_posteriori_errors	530663
abs_update	8003667
abs_update_r	778427
all_roots	529613
append_clone	1603057
bkeval_single_power	5223636
check_ab	1178903
checkbound	2354935
checkvalidpol	266941
clean_roots	529662
cleanroots	231644
cmp_complex_appr	2231705
conformal_basecase	1403472
conformal_mapping	467788
conformal_pol	1403592
dblexp	6547384
dbllog2	300586072
dft	502227
dual_modulus	1012191
eval_rel_pol	13135058
fft	14157796
fft2	7462
findpower	40944932
fix_roots	530662
fix_roots1	394088
fujiwara_bound	2265135
fujiwara_bound_real	1406878
graeffe	49494210
homothetie	1609690
homothetie2n	9955359
homothetie_gauss	36487480
ind_maxlog2	902412
initdft	996064
isexactpol	239634
isexactscalar	931280
isreal	961626
isvalidcoeff	1229675
logmax_modulus	4449764
logmin_modulus	1614395
logmodulus	606620
logpre_modulus	606620
logradius	493834
lower_bound	40944601
mydbllog2i	224299427
mydbllog2r	56778728
mydbllogr	9544685
mygprec	63699924
mygprec_absolute	4300420
mygprec_special	530662
mygprecrc	214996438
mygprecrc_special	2161081
myshiftic	135795891
myshiftrc	35499814
newton_polygon	5505959
optimize_split	493839
parameters	493838
pol_to_gaussint	17584877
polgraeffe	14
polmod_to_embed	84
polrootsbound	27300
polrootsbound_i	27293
polsolve	166629
quicktofp	6961290
realroots	50627
refine_F	502218
refine_H	2459795
root_error	1899226
roots	8018
roots_aux	239662
roots_com	239634
rootsdeg0	42
scalepol	4288159
scalepol2n	0
sol_ok	3378
solve_exact_pol	231040
split_0	494158
split_0_1	468110
split_0_2	468110
split_1	467787
split_2	493839
split_complete	1518981
split_fromU	493839
split_pols	166633
splitcauchy	166643
splitpoleval	5223640
tocomplex	1201037
update_radius	493837
usp	1126032

Generated by: LCOV version 1.16