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 30848-b1463d63da) Lines: 1467 1530 95.9 % Date: 2026-04-30 09:27:33 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296315
RgX_gtofp_bit	7048732
RgX_normalize1	35838
X2XP1	5990616
ZX_Uspensky	1313846
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15203
ZX_graeffe	5439
ZX_realroots_irred	48568
ZX_rescale2prim	2233818
ZX_sturm	6395
ZX_sturm_i	123074
ZX_sturm_irred	116679
ZX_sturmpart	1128242
ZX_to_ZiX	16495291
ZiX_sqr	99240332
_gen_nored	11198556
_gen_one	14472472
_gen_zero	326004
_intervalcmp	0
_mp_add	24660529
_mp_cmul	34759984
_mp_mul	4374424
_mp_sqr	6298398
_mp_sub	0
_sqrtnr	22596
a_posteriori_errors	537494
abs_update	8021961
abs_update_r	780171
all_roots	536390
append_clone	1616268
bkeval_single_power	5235490
check_ab	1178869
checkbound	2354870
checkvalidpol	267361
clean_roots	536437
cleanroots	231763
cmp_complex_appr	2241636
conformal_basecase	1406562
conformal_mapping	468815
conformal_pol	1406682
dblexp	6563078
dbllog2	303964166
dft	503363
dual_modulus	1014555
eval_rel_pol	13169636
fft	14196351
fft2	7462
findpower	41033942
fix_roots	537500
fix_roots1	398816
fujiwara_bound	2273961
fujiwara_bound_real	1406918
graeffe	49610792
homothetie	1613702
homothetie2n	9979989
homothetie_gauss	36569333
ind_maxlog2	904394
initdft	998325
isexactpol	240117
isexactscalar	934122
isreal	963781
isvalidcoeff	1231117
logmax_modulus	4459041
logmin_modulus	1617791
logmodulus	608278
logpre_modulus	608279
logradius	494957
lower_bound	41033766
mydbllog2i	226812944
mydbllog2r	57622882
mydbllogr	9566363
mygprec	63865823
mygprec_absolute	4344466
mygprec_special	537500
mygprecrc	215585728
mygprecrc_special	2181546
myshiftic	136091084
myshiftrc	35580029
newton_polygon	5521266
optimize_split	494965
parameters	494964
pol_to_gaussint	17628671
polgraeffe	14
polmod_to_embed	84
polrootsbound	27237
polrootsbound_i	27230
polsolve	166699
quicktofp	6987518
realroots	50627
refine_F	503356
refine_H	2464708
root_error	1914525
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297695
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495332
split_0_1	469186
split_0_2	469187
split_1	468816
split_2	494963
split_complete	1528162
split_fromU	494965
split_pols	166702
splitcauchy	166709
splitpoleval	5235313
tocomplex	1215985
update_radius	494962
usp	1126022

Generated by: LCOV version 1.16