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: 2025-12-18 09:22:54 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	15275
_sqrtnr	22710
polrootsbound_i	27300
polrootsbound	27307
RgX_normalize1	35908
ZX_realroots_irred	48654
realroots	50627
ZX_sturm_irred	116803
ZX_sturm_i	123198
split_pols	166719
polsolve	166721
splitcauchy	166730
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267067
QX_complex_roots	296488
_gen_zero	326153
fix_roots1	398486
split_1	467954
conformal_mapping	467955
split_0_1	468317
split_0_2	468317
logradius	494007
update_radius	494008
split_2	494009
optimize_split	494010
parameters	494010
split_fromU	494010
split_0	494372
refine_F	502386
dft	502400
all_roots	536197
clean_roots	536243
fix_roots	537292
a_posteriori_errors	537297
mygprec_special	537304
logmodulus	606805
logpre_modulus	606805
abs_update_r	778695
ind_maxlog2	902736
isexactscalar	931714
isreal	961964
initdft	996410
dual_modulus	1012526
usp	1126046
ZX_sturmpart	1128244
check_ab	1178872
tocomplex	1214201
isvalidcoeff	1230270
ZX_Uspensky	1313910
conformal_basecase	1403977
conformal_pol	1404095
fujiwara_bound_real	1406951
split_complete	1526044
homothetie	1610216
append_clone	1614359
logmin_modulus	1614916
root_error	1912806
mygprecrc_special	2179423
ZX_rescale2prim	2233743
cmp_complex_appr	2238762
fujiwara_bound	2271961
checkbound	2354872
refine_H	2460671
scalepol	4289672
mygprec_absolute	4340678
_mp_mul	4374600
logmax_modulus	4451250
splitpoleval	5235953
bkeval_single_power	5236018
newton_polygon	5507604
X2XP1	5990355
_mp_sqr	6298315
dblexp	6549564
quicktofp	6979648
RgX_gtofp_bit	7032164
abs_update	8006074
mydbllogr	9547801
homothetie2n	9958407
_gen_nored	11204821
eval_rel_pol	13139246
fft	14160862
_gen_one	14472953
ZX_to_ZiX	16459999
pol_to_gaussint	17590420
_mp_add	24663756
_mp_cmul	34770392
myshiftrc	35510210
homothetie_gauss	36500974
findpower	40958394
lower_bound	40958952
graeffe	49511812
mydbllog2r	56187394
mygprec	63763513
ZiX_sqr	99040047
myshiftic	135861151
mygprecrc	215214824
mydbllog2i	226463626
dbllog2	302154338

Generated by: LCOV version 1.16