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 30568-0d72d66ef5) Lines: 1467 1530 95.9 % Date: 2025-12-01 09:22:22 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296484
RgX_gtofp_bit	7031931
RgX_normalize1	35908
X2XP1	5990355
ZX_Uspensky	1313871
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5390
ZX_realroots_irred	48650
ZX_rescale2prim	2233753
ZX_sturm	6395
ZX_sturm_i	123192
ZX_sturm_irred	116797
ZX_sturmpart	1128217
ZX_to_ZiX	16460471
ZiX_sqr	99029828
_gen_nored	11200880
_gen_one	14472103
_gen_zero	326113
_intervalcmp	0
_mp_add	24661289
_mp_cmul	34763759
_mp_mul	4374464
_mp_sqr	6298178
_mp_sub	0
_sqrtnr	22709
a_posteriori_errors	537289
abs_update	8005649
abs_update_r	778659
all_roots	536191
append_clone	1614330
bkeval_single_power	5235660
check_ab	1178844
checkbound	2354818
checkvalidpol	267067
clean_roots	536237
cleanroots	231763
cmp_complex_appr	2238731
conformal_basecase	1403952
conformal_mapping	467948
conformal_pol	1404072
dblexp	6549309
dbllog2	302123652
dft	502387
dual_modulus	1012481
eval_rel_pol	13138566
fft	14159852
fft2	7462
findpower	40956540
fix_roots	537290
fix_roots1	398486
fujiwara_bound	2271904
fujiwara_bound_real	1406914
graeffe	49506911
homothetie	1610146
homothetie2n	9958277
homothetie_gauss	36499561
ind_maxlog2	902698
initdft	996383
isexactpol	239753
isexactscalar	931714
isreal	961942
isvalidcoeff	1230270
logmax_modulus	4451181
logmin_modulus	1614909
logmodulus	606782
logpre_modulus	606784
logradius	493996
lower_bound	40957686
mydbllog2i	226441182
mydbllog2r	56187052
mydbllogr	9547147
mygprec	63760546
mygprec_absolute	4340594
mygprec_special	537298
mygprecrc	215209102
mygprecrc_special	2179400
myshiftic	135830273
myshiftrc	35509130
newton_polygon	5507449
optimize_split	493998
parameters	493996
pol_to_gaussint	17589726
polgraeffe	14
polmod_to_embed	84
polrootsbound	27307
polrootsbound_i	27300
polsolve	166724
quicktofp	6979385
realroots	50627
refine_F	502383
refine_H	2460603
root_error	1912789
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289562
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494357
split_0_1	468309
split_0_2	468309
split_1	467946
split_2	493997
split_complete	1526006
split_fromU	493997
split_pols	166725
splitcauchy	166722
splitpoleval	5235370
tocomplex	1214167
update_radius	493995
usp	1126041

Generated by: LCOV version 1.16