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 30574-595e4ba651) Lines: 1467 1530 95.9 % Date: 2025-12-17 09:21:45 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	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15273
_sqrtnr	22709
polrootsbound_i	27300
polrootsbound	27307
RgX_normalize1	35908
ZX_realroots_irred	48646
realroots	50627
ZX_sturm_irred	116794
ZX_sturm_i	123189
polsolve	166723
split_pols	166723
splitcauchy	166730
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267067
QX_complex_roots	296477
_gen_zero	326117
fix_roots1	398488
split_1	467930
conformal_mapping	467935
split_0_1	468292
split_0_2	468294
logradius	493981
update_radius	493981
parameters	493982
split_2	493982
optimize_split	493985
split_fromU	493985
split_0	494345
refine_F	502364
dft	502370
all_roots	536188
clean_roots	536234
a_posteriori_errors	537290
fix_roots	537295
mygprec_special	537300
logmodulus	606762
logpre_modulus	606771
abs_update_r	778668
ind_maxlog2	902697
isexactscalar	931714
isreal	961915
initdft	996353
dual_modulus	1012477
usp	1126023
ZX_sturmpart	1128170
check_ab	1178796
tocomplex	1214167
isvalidcoeff	1230270
ZX_Uspensky	1313826
conformal_basecase	1403918
conformal_pol	1404036
fujiwara_bound_real	1406856
split_complete	1525979
homothetie	1610130
append_clone	1614303
logmin_modulus	1614837
root_error	1912782
mygprecrc_special	2179389
ZX_rescale2prim	2233759
cmp_complex_appr	2238698
fujiwara_bound	2271845
checkbound	2354722
refine_H	2460521
scalepol	4289459
mygprec_absolute	4340530
_mp_mul	4374439
logmax_modulus	4451014
bkeval_single_power	5234706
splitpoleval	5234993
newton_polygon	5507320
X2XP1	5990333
_mp_sqr	6297963
dblexp	6549150
quicktofp	6979255
RgX_gtofp_bit	7031754
abs_update	8005407
mydbllogr	9546983
homothetie2n	9957957
_gen_nored	11200193
eval_rel_pol	13138477
fft	14159232
_gen_one	14469184
ZX_to_ZiX	16457933
pol_to_gaussint	17589364
_mp_add	24659998
_mp_cmul	34760658
myshiftrc	35507886
homothetie_gauss	36497310
lower_bound	40956040
findpower	40956155
graeffe	49508565
mydbllog2r	56184913
mygprec	63760035
ZiX_sqr	99029898
myshiftic	135839010
mygprecrc	215198138
mydbllog2i	226439171
dbllog2	302130219

Generated by: LCOV version 1.16