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 30572-91e0396466) Lines: 1467 1530 95.9 % Date: 2025-12-14 09:22:17 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296487
RgX_gtofp_bit	7031728
RgX_normalize1	35908
X2XP1	5990275
ZX_Uspensky	1313850
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15273
ZX_graeffe	5390
ZX_realroots_irred	48651
ZX_rescale2prim	2233723
ZX_sturm	6395
ZX_sturm_i	123199
ZX_sturm_irred	116804
ZX_sturmpart	1128186
ZX_to_ZiX	16454699
ZiX_sqr	99027683
_gen_nored	11203901
_gen_one	14473318
_gen_zero	326165
_intervalcmp	0
_mp_add	24662488
_mp_cmul	34767865
_mp_mul	4374538
_mp_sqr	6298231
_mp_sub	0
_sqrtnr	22708
a_posteriori_errors	537291
abs_update	8005165
abs_update_r	778688
all_roots	536195
append_clone	1614304
bkeval_single_power	5235890
check_ab	1178813
checkbound	2354756
checkvalidpol	267067
clean_roots	536237
cleanroots	231763
cmp_complex_appr	2238717
conformal_basecase	1403884
conformal_mapping	467920
conformal_pol	1404004
dblexp	6549063
dbllog2	302105850
dft	502368
dual_modulus	1012464
eval_rel_pol	13138346
fft	14159494
fft2	7462
findpower	40954961
fix_roots	537294
fix_roots1	398485
fujiwara_bound	2271894
fujiwara_bound_real	1406890
graeffe	49506769
homothetie	1610114
homothetie2n	9957838
homothetie_gauss	36496179
ind_maxlog2	902684
initdft	996344
isexactpol	239753
isexactscalar	931714
isreal	961902
isvalidcoeff	1230270
logmax_modulus	4450901
logmin_modulus	1614774
logmodulus	606765
logpre_modulus	606763
logradius	493973
lower_bound	40954894
mydbllog2i	226427694
mydbllog2r	56183397
mydbllogr	9546633
mygprec	63757642
mygprec_absolute	4340589
mygprec_special	537298
mygprecrc	215184628
mygprecrc_special	2179374
myshiftic	135825273
myshiftrc	35507126
newton_polygon	5507278
optimize_split	493977
parameters	493977
pol_to_gaussint	17589183
polgraeffe	14
polmod_to_embed	84
polrootsbound	27307
polrootsbound_i	27300
polsolve	166728
quicktofp	6979430
realroots	50627
refine_F	502364
refine_H	2460460
root_error	1912781
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289388
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494343
split_0_1	468283
split_0_2	468284
split_1	467925
split_2	493975
split_complete	1525979
split_fromU	493977
split_pols	166728
splitcauchy	166728
splitpoleval	5235873
tocomplex	1214158
update_radius	493978
usp	1126036

Generated by: LCOV version 1.16