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 30462-6c568f4018) Lines: 1467 1530 95.9 % Date: 2025-08-10 09:24:05 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5383
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22710
polrootsbound_i	27293
polrootsbound	27300
RgX_normalize1	35887
ZX_realroots_irred	48639
realroots	50627
ZX_sturm_irred	116768
ZX_sturm_i	123163
split_pols	166668
polsolve	166671
splitcauchy	166681
solve_exact_pol	231145
cleanroots	231749
isexactpol	239739
roots_com	239739
roots_aux	239767
checkvalidpol	267046
QX_complex_roots	296374
_gen_zero	326138
fix_roots1	398399
conformal_mapping	467892
split_1	467895
split_0_1	468219
split_0_2	468219
split_2	493943
logradius	493944
optimize_split	493945
parameters	493945
update_radius	493945
split_fromU	493946
split_0	494269
refine_F	502326
dft	502339
all_roots	536066
clean_roots	536113
a_posteriori_errors	537113
fix_roots	537118
mygprec_special	537119
logpre_modulus	606723
logmodulus	606724
abs_update_r	778674
ind_maxlog2	902599
isexactscalar	931700
isreal	961840
initdft	996284
dual_modulus	1012394
usp	1125980
ZX_sturmpart	1128218
check_ab	1178845
tocomplex	1213832
isvalidcoeff	1230095
ZX_Uspensky	1313846
conformal_basecase	1403799
conformal_pol	1403918
fujiwara_bound_real	1406861
split_complete	1525645
homothetie	1609997
append_clone	1613921
logmin_modulus	1614727
root_error	1912279
mygprecrc_special	2178419
ZX_rescale2prim	2233719
cmp_complex_appr	2238440
fujiwara_bound	2271618
checkbound	2354820
refine_H	2460225
scalepol	4289127
mygprec_absolute	4339097
_mp_mul	4373760
logmax_modulus	4450657
splitpoleval	5233750
bkeval_single_power	5233957
newton_polygon	5506892
X2XP1	5990214
_mp_sqr	6297234
dblexp	6548686
quicktofp	6978702
RgX_gtofp_bit	7031111
abs_update	8004368
mydbllogr	9545836
homothetie2n	9957219
_gen_nored	11195363
eval_rel_pol	13137436
fft	14158783
_gen_one	14468016
ZX_to_ZiX	16452351
pol_to_gaussint	17588132
_mp_add	24656462
_mp_cmul	34752604
myshiftrc	35505815
homothetie_gauss	36496417
lower_bound	40952986
findpower	40953990
graeffe	49503743
mydbllog2r	56752975
mygprec	63751962
ZiX_sqr	99033968
myshiftic	135786479
mygprecrc	215158059
mydbllog2i	226390702
dbllog2	302611710

Generated by: LCOV version 1.16