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 30401-87099e65a6) Lines: 1467 1530 95.9 % Date: 2025-07-18 09:23:12 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	5383
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22710
polrootsbound_i	27293
polrootsbound	27300
RgX_normalize1	35887
ZX_realroots_irred	48622
realroots	50627
ZX_sturm_irred	116760
ZX_sturm_i	123155
split_pols	166628
polsolve	166632
splitcauchy	166640
solve_exact_pol	231040
cleanroots	231644
isexactpol	239634
roots_com	239634
roots_aux	239662
checkvalidpol	266941
QX_complex_roots	290021
_gen_zero	325990
fix_roots1	394075
conformal_mapping	467780
split_1	467783
split_0_1	468104
split_0_2	468104
logradius	493819
optimize_split	493825
split_fromU	493825
parameters	493826
split_2	493826
update_radius	493827
split_0	494148
refine_F	502211
dft	502215
all_roots	529610
clean_roots	529656
fix_roots	530646
a_posteriori_errors	530658
mygprec_special	530661
logpre_modulus	606586
logmodulus	606587
abs_update_r	778403
ind_maxlog2	902401
isexactscalar	931280
isreal	961608
initdft	996040
dual_modulus	1012150
usp	1126038
ZX_sturmpart	1128277
check_ab	1178904
tocomplex	1201007
isvalidcoeff	1229675
ZX_Uspensky	1313880
conformal_basecase	1403459
conformal_pol	1403579
fujiwara_bound_real	1406878
split_complete	1518948
append_clone	1603017
homothetie	1609624
logmin_modulus	1614387
root_error	1899189
mygprecrc_special	2161033
cmp_complex_appr	2231660
ZX_rescale2prim	2233898
fujiwara_bound	2265126
checkbound	2354938
refine_H	2459723
scalepol	4288066
mygprec_absolute	4300439
_mp_mul	4373423
logmax_modulus	4449730
splitpoleval	5223492
bkeval_single_power	5223894
newton_polygon	5505638
X2XP1	5990602
_mp_sqr	6291946
dblexp	6547176
quicktofp	6961191
RgX_gtofp_bit	7023258
abs_update	8003034
mydbllogr	9543799
homothetie2n	9955078
_gen_nored	11175556
eval_rel_pol	13134553
fft	14156283
_gen_one	14442957
ZX_to_ZiX	16455417
pol_to_gaussint	17584238
_mp_add	24650953
_mp_cmul	34729398
myshiftrc	35498696
homothetie_gauss	36492926
lower_bound	40945992
findpower	40946665
graeffe	49497199
mydbllog2r	56779374
mygprec	63699383
ZiX_sqr	99016092
myshiftic	135781948
mygprecrc	214995869
mydbllog2i	226314003
dbllog2	302590668

Generated by: LCOV version 1.16