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 30735-65f72320ad) Lines: 1467 1530 95.9 % Date: 2026-03-12 09:23:43 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	5439
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15202
_sqrtnr	22597
polrootsbound_i	27097
polrootsbound	27104
RgX_normalize1	35705
ZX_realroots_irred	48573
realroots	50627
ZX_sturm_irred	116676
ZX_sturm_i	123071
polsolve	166703
split_pols	166703
splitcauchy	166707
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266864
QX_complex_roots	296311
_gen_zero	326000
fix_roots1	398481
split_1	468048
conformal_mapping	468051
split_0_1	468413
split_0_2	468413
logradius	494142
update_radius	494144
parameters	494145
split_2	494146
split_fromU	494146
optimize_split	494147
split_0	494508
refine_F	502526
dft	502534
all_roots	536017
clean_roots	536068
a_posteriori_errors	537121
fix_roots	537121
mygprec_special	537127
logpre_modulus	607092
logmodulus	607093
abs_update_r	779094
ind_maxlog2	903060
isexactscalar	931714
isreal	962194
initdft	996679
dual_modulus	1012829
usp	1126128
ZX_sturmpart	1128287
check_ab	1178914
tocomplex	1213855
isvalidcoeff	1228065
ZX_Uspensky	1313890
conformal_basecase	1404264
conformal_pol	1404381
fujiwara_bound_real	1406947
split_complete	1526143
homothetie	1610795
append_clone	1614337
logmin_modulus	1615174
root_error	1912481
mygprecrc_special	2179227
ZX_rescale2prim	2233888
cmp_complex_appr	2238475
fujiwara_bound	2271641
checkbound	2354958
refine_H	2461187
scalepol	4290639
mygprec_absolute	4339671
_mp_mul	4374666
logmax_modulus	4451802
bkeval_single_power	5235351
splitpoleval	5236189
newton_polygon	5510496
X2XP1	5990797
_mp_sqr	6298521
dblexp	6551634
quicktofp	6979479
RgX_gtofp_bit	7035334
abs_update	8008766
mydbllogr	9550601
homothetie2n	9961987
_gen_nored	11205919
eval_rel_pol	13144673
fft	14165696
_gen_one	14473778
ZX_to_ZiX	16451960
pol_to_gaussint	17596511
_mp_add	24665141
_mp_cmul	34776669
myshiftrc	35518858
homothetie_gauss	36505062
findpower	40964597
lower_bound	40964956
graeffe	49526260
mydbllog2r	56189681
mygprec	63776848
ZiX_sqr	99067214
myshiftic	135910723
mygprecrc	215232009
mydbllog2i	226490786
dbllog2	302201338

Generated by: LCOV version 1.16