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

Generated by: LCOV version 1.16