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 30571-c0dfe82732) Lines: 1467 1530 95.9 % Date: 2025-12-11 09:22:11 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296481
RgX_gtofp_bit	7031650
RgX_normalize1	35906
X2XP1	5990347
ZX_Uspensky	1313904
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15275
ZX_graeffe	5390
ZX_realroots_irred	48655
ZX_rescale2prim	2233757
ZX_sturm	6395
ZX_sturm_i	123194
ZX_sturm_irred	116799
ZX_sturmpart	1128239
ZX_to_ZiX	16456160
ZiX_sqr	99026145
_gen_nored	11203638
_gen_one	14473386
_gen_zero	326134
_intervalcmp	0
_mp_add	24662879
_mp_cmul	34767952
_mp_mul	4374559
_mp_sqr	6298281
_mp_sub	0
_sqrtnr	22709
a_posteriori_errors	537292
abs_update	8005281
abs_update_r	778660
all_roots	536188
append_clone	1614289
bkeval_single_power	5235888
check_ab	1178866
checkbound	2354862
checkvalidpol	267065
clean_roots	536233
cleanroots	231763
cmp_complex_appr	2238698
conformal_basecase	1403876
conformal_mapping	467920
conformal_pol	1403997
dblexp	6548951
dbllog2	302110798
dft	502357
dual_modulus	1012447
eval_rel_pol	13138131
fft	14159002
fft2	7462
findpower	40959580
fix_roots	537290
fix_roots1	398484
fujiwara_bound	2271944
fujiwara_bound_real	1406951
graeffe	49506555
homothetie	1610090
homothetie2n	9957709
homothetie_gauss	36495946
ind_maxlog2	902667
initdft	996322
isexactpol	239753
isexactscalar	931714
isreal	961892
isvalidcoeff	1230264
logmax_modulus	4450841
logmin_modulus	1614761
logmodulus	606753
logpre_modulus	606754
logradius	493967
lower_bound	40955094
mydbllog2i	226434615
mydbllog2r	56182357
mydbllogr	9546795
mygprec	63757807
mygprec_absolute	4340532
mygprec_special	537294
mygprecrc	215190263
mygprecrc_special	2179357
myshiftic	135826359
myshiftrc	35506135
newton_polygon	5507208
optimize_split	493970
parameters	493968
pol_to_gaussint	17588981
polgraeffe	14
polmod_to_embed	84
polrootsbound	27305
polrootsbound_i	27298
polsolve	166721
quicktofp	6979525
realroots	50627
refine_F	502353
refine_H	2460443
root_error	1912753
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289345
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494334
split_0_1	468286
split_0_2	468286
split_1	467923
split_2	493966
split_complete	1525960
split_fromU	493971
split_pols	166718
splitcauchy	166732
splitpoleval	5235751
tocomplex	1214144
update_radius	493969
usp	1126070

Generated by: LCOV version 1.16