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 30571-c0dfe82732) Lines: 1467 1530 95.9 % Date: 2025-12-09 09:22:05 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296484
RgX_gtofp_bit	7031663
RgX_normalize1	35908
X2XP1	5990670
ZX_Uspensky	1313932
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15273
ZX_graeffe	5390
ZX_realroots_irred	48654
ZX_rescale2prim	2233894
ZX_sturm	6395
ZX_sturm_i	123199
ZX_sturm_irred	116805
ZX_sturmpart	1128263
ZX_to_ZiX	16459040
ZiX_sqr	99029849
_gen_nored	11203413
_gen_one	14473729
_gen_zero	326149
_intervalcmp	0
_mp_add	24662911
_mp_cmul	34767949
_mp_mul	4374507
_mp_sqr	6298316
_mp_sub	0
_sqrtnr	22708
a_posteriori_errors	537292
abs_update	8005681
abs_update_r	778654
all_roots	536190
append_clone	1614294
bkeval_single_power	5236241
check_ab	1178890
checkbound	2354910
checkvalidpol	267067
clean_roots	536233
cleanroots	231763
cmp_complex_appr	2238700
conformal_basecase	1403922
conformal_mapping	467938
conformal_pol	1404043
dblexp	6549161
dbllog2	302121503
dft	502372
dual_modulus	1012476
eval_rel_pol	13138357
fft	14159665
fft2	7462
findpower	40955816
fix_roots	537295
fix_roots1	398486
fujiwara_bound	2271969
fujiwara_bound_real	1406976
graeffe	49508392
homothetie	1610123
homothetie2n	9957943
homothetie_gauss	36497577
ind_maxlog2	902690
initdft	996358
isexactpol	239753
isexactscalar	931714
isreal	961920
isvalidcoeff	1230270
logmax_modulus	4451054
logmin_modulus	1614850
logmodulus	606763
logpre_modulus	606759
logradius	493980
lower_bound	40955889
mydbllog2i	226440164
mydbllog2r	56185226
mydbllogr	9547169
mygprec	63759272
mygprec_absolute	4340526
mygprec_special	537298
mygprecrc	215200164
mygprecrc_special	2179384
myshiftic	135832284
myshiftrc	35507573
newton_polygon	5507224
optimize_split	493987
parameters	493985
pol_to_gaussint	17589345
polgraeffe	14
polmod_to_embed	84
polrootsbound	27307
polrootsbound_i	27300
polsolve	166722
quicktofp	6979607
realroots	50627
refine_F	502367
refine_H	2460525
root_error	1912755
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289483
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494349
split_0_1	468302
split_0_2	468302
split_1	467934
split_2	493982
split_complete	1525980
split_fromU	493987
split_pols	166722
splitcauchy	166729
splitpoleval	5235826
tocomplex	1214161
update_radius	493985
usp	1126104

Generated by: LCOV version 1.16