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 30536-6f6fcf9613) Lines: 1468 1530 95.9 % Date: 2025-11-04 09:21:32 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296415
RgX_gtofp_bit	7031591
RgX_normalize1	35901
X2XP1	5990188
ZX_Uspensky	1313903
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5390
ZX_realroots_irred	48653
ZX_rescale2prim	2233672
ZX_sturm	6395
ZX_sturm_i	123170
ZX_sturm_irred	116775
ZX_sturmpart	1128256
ZX_to_ZiX	16456167
ZiX_sqr	99026612
_gen_nored	11200829
_gen_one	14472080
_gen_zero	326127
_intervalcmp	0
_mp_add	24660868
_mp_cmul	34763465
_mp_mul	4374532
_mp_sqr	6298348
_mp_sub	0
_sqrtnr	22707
a_posteriori_errors	537222
abs_update	8005126
abs_update_r	778669
all_roots	536123
append_clone	1614183
bkeval_single_power	5235409
check_ab	1178883
checkbound	2354896
checkvalidpol	267060
clean_roots	536165
cleanroots	231763
cmp_complex_appr	2238563
conformal_basecase	1403895
conformal_mapping	467928
conformal_pol	1404013
dblexp	6549014
dbllog2	302093002
dft	502363
dual_modulus	1012461
eval_rel_pol	13138245
fft	14159100
fft2	7462
findpower	40956420
fix_roots	537217
fix_roots1	398464
fujiwara_bound	2271803
fujiwara_bound_real	1406939
graeffe	49504682
homothetie	1610096
homothetie2n	9957621
homothetie_gauss	36497904
ind_maxlog2	902684
initdft	996339
isexactpol	239753
isexactscalar	931714
isreal	961902
isvalidcoeff	1230235
logmax_modulus	4450871
logmin_modulus	1614789
logmodulus	606752
logpre_modulus	606759
logradius	493975
lower_bound	40955402
mydbllog2i	226435630
mydbllog2r	56172958
mydbllogr	9546613
mygprec	63756573
mygprec_absolute	4339939
mygprec_special	537229
mygprecrc	215180762
mygprecrc_special	2179183
myshiftic	135792604
myshiftrc	35506480
newton_polygon	5507238
optimize_split	493977
parameters	493975
pol_to_gaussint	17589082
polgraeffe	14
polmod_to_embed	84
polrootsbound	27300
polrootsbound_i	27293
polsolve	166727
quicktofp	6979035
realroots	50627
refine_F	502358
refine_H	2460456
root_error	1912567
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289379
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494336
split_0_1	468292
split_0_2	468292
split_1	467927
split_2	493974
split_complete	1525890
split_fromU	493977
split_pols	166727
splitcauchy	166730
splitpoleval	5235606
tocomplex	1213968
update_radius	493976
usp	1126035

Generated by: LCOV version 1.16