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: 2025-12-05 09:21:30 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296482
RgX_gtofp_bit	7031868
RgX_normalize1	35906
X2XP1	5990338
ZX_Uspensky	1313865
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15273
ZX_graeffe	5390
ZX_realroots_irred	48652
ZX_rescale2prim	2233765
ZX_sturm	6395
ZX_sturm_i	123193
ZX_sturm_irred	116798
ZX_sturmpart	1128199
ZX_to_ZiX	16462282
ZiX_sqr	99035550
_gen_nored	11203244
_gen_one	14473385
_gen_zero	326138
_intervalcmp	0
_mp_add	24663093
_mp_cmul	34768061
_mp_mul	4374481
_mp_sqr	6298285
_mp_sub	0
_sqrtnr	22707
a_posteriori_errors	537289
abs_update	8006170
abs_update_r	778657
all_roots	536190
append_clone	1614316
bkeval_single_power	5236020
check_ab	1178826
checkbound	2354783
checkvalidpol	267065
clean_roots	536234
cleanroots	231763
cmp_complex_appr	2238695
conformal_basecase	1403956
conformal_mapping	467948
conformal_pol	1404072
dblexp	6549318
dbllog2	302140099
dft	502385
dual_modulus	1012501
eval_rel_pol	13138770
fft	14160755
fft2	7462
findpower	40957683
fix_roots	537290
fix_roots1	398486
fujiwara_bound	2271910
fujiwara_bound_real	1406914
graeffe	49510805
homothetie	1610168
homothetie2n	9958225
homothetie_gauss	36499751
ind_maxlog2	902705
initdft	996376
isexactpol	239753
isexactscalar	931714
isreal	961945
isvalidcoeff	1230264
logmax_modulus	4451227
logmin_modulus	1614920
logmodulus	606779
logpre_modulus	606778
logradius	493994
lower_bound	40957768
mydbllog2i	226453832
mydbllog2r	56186947
mydbllogr	9547608
mygprec	63760736
mygprec_absolute	4340617
mygprec_special	537296
mygprecrc	215213236
mygprecrc_special	2179392
myshiftic	135836966
myshiftrc	35509047
newton_polygon	5507381
optimize_split	493998
parameters	493994
pol_to_gaussint	17589898
polgraeffe	14
polmod_to_embed	84
polrootsbound	27305
polrootsbound_i	27298
polsolve	166715
quicktofp	6979472
realroots	50627
refine_F	502381
refine_H	2460592
root_error	1912776
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289572
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494361
split_0_1	468309
split_0_2	468309
split_1	467948
split_2	493998
split_complete	1526007
split_fromU	493997
split_pols	166713
splitcauchy	166723
splitpoleval	5235683
tocomplex	1214159
update_radius	493996
usp	1126054

Generated by: LCOV version 1.16