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 30744-52374ab6cf) Lines: 1467 1530 95.9 % Date: 2026-03-17 09:26:37 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296312
RgX_gtofp_bit	7048014
RgX_normalize1	35705
X2XP1	5990531
ZX_Uspensky	1313882
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48575
ZX_rescale2prim	2233767
ZX_sturm	6395
ZX_sturm_i	123072
ZX_sturm_irred	116677
ZX_sturmpart	1128281
ZX_to_ZiX	16493361
ZiX_sqr	99235729
_gen_nored	11209727
_gen_one	14476242
_gen_zero	326012
_intervalcmp	0
_mp_add	24665912
_mp_cmul	34781058
_mp_mul	4374677
_mp_sqr	6298701
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	537468
abs_update	8021030
abs_update_r	780123
all_roots	536371
append_clone	1616166
bkeval_single_power	5235619
check_ab	1178908
checkbound	2354946
checkvalidpol	267214
clean_roots	536413
cleanroots	231763
cmp_complex_appr	2241488
conformal_basecase	1406463
conformal_mapping	468785
conformal_pol	1406582
dblexp	6562613
dbllog2	304083849
dft	503328
dual_modulus	1014497
eval_rel_pol	13168541
fft	14194262
fft2	7462
findpower	41030724
fix_roots	537471
fix_roots1	398788
fujiwara_bound	2271994
fujiwara_bound_real	1406951
graeffe	49610824
homothetie	1613577
homothetie2n	9979113
homothetie_gauss	36565438
ind_maxlog2	904359
initdft	998257
isexactpol	240103
isexactscalar	934017
isreal	963716
isvalidcoeff	1230445
logmax_modulus	4458722
logmin_modulus	1617731
logmodulus	608216
logpre_modulus	608215
logradius	494934
lower_bound	41031184
mydbllog2i	226901977
mydbllog2r	57611790
mydbllogr	9565454
mygprec	63865285
mygprec_absolute	4344116
mygprec_special	537476
mygprecrc	215565611
mygprecrc_special	2181396
myshiftic	136146135
myshiftrc	35577428
newton_polygon	5520622
optimize_split	494934
parameters	494934
pol_to_gaussint	17627143
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166706
quicktofp	6981377
realroots	50627
refine_F	503321
refine_H	2464610
root_error	1914406
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297428
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495302
split_0_1	469149
split_0_2	469149
split_1	468782
split_2	494933
split_complete	1528076
split_fromU	494934
split_pols	166706
splitcauchy	166710
splitpoleval	5236279
tocomplex	1215865
update_radius	494933
usp	1126089

Generated by: LCOV version 1.16